diff --git a/egs/swbd/ASR/local/eval2000_data_prep.sh b/egs/swbd/ASR/local/eval2000_data_prep.sh
index f88198328..a5bd3ebcf 100755
--- a/egs/swbd/ASR/local/eval2000_data_prep.sh
+++ b/egs/swbd/ASR/local/eval2000_data_prep.sh
@@ -21,100 +21,98 @@
 # $tdir/reference/hub5e00.english.000405.stm
 
 if [ $# -ne 2 ]; then
-    echo "Usage: "`basename $0`" <speech-dir> <transcription-dir>"
+    echo "Usage: "$(basename $0)" <speech-dir> <transcription-dir>"
     echo "See comments in the script for more details"
     exit 1
 fi
 
 sdir=$1
 tdir=$2
-[ ! -d $sdir/english ] \
-    && echo Expecting directory $sdir/english to be present && exit 1;
-    [ -d $tdir/2000_hub5_eng_eval_tr ] \
-        && tdir=$tdir/2000_hub5_eng_eval_tr
-            [ ! -d $tdir/reference ] \
-                && echo Expecting directory $tdir/reference to be present && exit 1;
+[ ! -d $sdir/english ] &&
+    echo Expecting directory $sdir/english to be present && exit 1
+[ -d $tdir/2000_hub5_eng_eval_tr ] &&
+    tdir=$tdir/2000_hub5_eng_eval_tr
+[ ! -d $tdir/reference ] &&
+    echo Expecting directory $tdir/reference to be present && exit 1
 
+dir=data/local/eval2000
+mkdir -p $dir
 
-            dir=data/local/eval2000
-            mkdir -p $dir
+find $sdir/english -iname '*.sph' | sort >$dir/sph.flist
+sed -e 's?.*/??' -e 's?.sph??' $dir/sph.flist | paste - $dir/sph.flist \
+    >$dir/sph.scp
 
-            find $sdir/english -iname '*.sph' | sort > $dir/sph.flist
-            sed -e 's?.*/??' -e 's?.sph??' $dir/sph.flist | paste - $dir/sph.flist \
-                > $dir/sph.scp
+sph2pipe=sph2pipe
+[ ! -x $sph2pipe ] &&
+    echo "Could not execute the sph2pipe program at $sph2pipe" && exit 1
 
-            sph2pipe=sph2pipe
-            [ ! -x $sph2pipe ] \
-                && echo "Could not execute the sph2pipe program at $sph2pipe" && exit 1;
-
-            awk -v sph2pipe=$sph2pipe '{
+awk -v sph2pipe=$sph2pipe '{
             printf("%s-A %s -f wav -p -c 1 %s |\n", $1, sph2pipe, $2);
             printf("%s-B %s -f wav -p -c 2 %s |\n", $1, sph2pipe, $2);
-        }' < $dir/sph.scp | sort > $dir/wav.scp || exit 1;
-    #side A - channel 1, side B - channel 2
+        }' <$dir/sph.scp | sort >$dir/wav.scp || exit 1
+#side A - channel 1, side B - channel 2
 
 # Get segments file...
 # segments file format is: utt-id side-id start-time end-time, e.g.:
 # sw02001-A_000098-001156 sw02001-A 0.98 11.56
 pem=$sdir/english/hub5e_00.pem
-[ ! -f $pem ] && echo "$0: No such file $pem" && exit 1;
+[ ! -f $pem ] && echo "$0: No such file $pem" && exit 1
 # pem file has lines like:
 # en_4156 A unknown_speaker 301.85 302.48
 
 # we ignore the warnings below for now, although they seem to indicate some problems
 # with the data.
-grep -v ';;' $pem \
-    | awk '{
+grep -v ';;' $pem |
+    awk '{
     spk=$1"-"$2;
     utt=sprintf("%s_%06d-%06d",spk,$4*100,$5*100);
-    print utt,spk,$4,$5;}' \
-        | sort -u | local/extend_segments.pl 0.1 > $dir/segments
+    print utt,spk,$4,$5;}' |
+    sort -u | local/extend_segments.pl 0.1 >$dir/segments
 
 # stm file has lines like:
 # en_4156 A en_4156_A 357.64 359.64 <O,en,F,en-F>  HE IS A POLICE OFFICER
 # TODO(arnab): We should really be lowercasing this since the Edinburgh
 # recipe uses lowercase. This is not used in the actual scoring.
-grep -v ';;' $tdir/reference/hub5e00.english.000405.stm \
-    | awk '{
+grep -v ';;' $tdir/reference/hub5e00.english.000405.stm |
+    awk '{
     spk=$1"-"$2;
     utt=sprintf("%s_%06d-%06d",spk,$4*100,$5*100);
-    printf utt; for(n=7;n<=NF;n++) printf(" %s", $n); print ""; }' \
-        | sort > $dir/text.all
+    printf utt; for(n=7;n<=NF;n++) printf(" %s", $n); print ""; }' |
+    sort >$dir/text.all
 
 # We'll use the stm file for sclite scoring.  There seem to be various errors
 # in the stm file that upset hubscr.pl, and we fix them here.
 sed -e 's:((:(:' -e 's:<B_ASIDE>::g' -e 's:<E_ASIDE>::g' \
-    $tdir/reference/hub5e00.english.000405.stm >  $dir/stm
-    cp $tdir/reference/en20000405_hub5.glm  $dir/glm
+    $tdir/reference/hub5e00.english.000405.stm >$dir/stm
+cp $tdir/reference/en20000405_hub5.glm $dir/glm
 
 # next line uses command substitution
 # Just checking that the segments are the same in pem vs. stm.
-! cmp <(awk '{print $1}' $dir/text.all) <(awk '{print $1}' $dir/segments) && \
-    echo "Segments from pem file and stm file do not match." && exit 1;
+! cmp <(awk '{print $1}' $dir/text.all) <(awk '{print $1}' $dir/segments) &&
+    echo "Segments from pem file and stm file do not match." && exit 1
 
-grep -v IGNORE_TIME_SEGMENT_ $dir/text.all > $dir/text
+grep -v IGNORE_TIME_SEGMENT_ $dir/text.all >$dir/text
 
 # create an utt2spk file that assumes each conversation side is
 # a separate speaker.
-awk '{print $1,$2;}' $dir/segments > $dir/utt2spk
-utils/utt2spk_to_spk2utt.pl $dir/utt2spk > $dir/spk2utt
+awk '{print $1,$2;}' $dir/segments >$dir/utt2spk
+utils/utt2spk_to_spk2utt.pl $dir/utt2spk >$dir/spk2utt
 
 # cp $dir/segments $dir/segments.tmp
 # awk '{x=$3-0.05; if (x<0.0) x=0.0; y=$4+0.05; print $1, $2, x, y; }' \
 #   $dir/segments.tmp > $dir/segments
 
-awk '{print $1}' $dir/wav.scp \
-    | perl -ane '$_ =~ m:^(\S+)-([AB])$: || die "bad label $_";
+awk '{print $1}' $dir/wav.scp |
+    perl -ane '$_ =~ m:^(\S+)-([AB])$: || die "bad label $_";
     print "$1-$2 $1 $2\n"; ' \
-        > $dir/reco2file_and_channel || exit 1;
+        >$dir/reco2file_and_channel || exit 1
 
+echo Data preparation and formatting completed for Eval 2000
+echo "(but not MFCC extraction)"
 
-    echo Data preparation and formatting completed for Eval 2000
-    echo "(but not MFCC extraction)"
+utils/fix_data_dir.sh $dir
 
-    utils/fix_data_dir.sh $dir
-
-    if [ $(wc -l < $dir/wav.scp) -ne 80 ]; then
-        echo "$0: error: expected 80 lines in wav.scp, got $(wc -l < $dir/wav.scp)"
-        exit 1;
-    fi
+if [ $(wc -l <$dir/wav.scp) -ne 80 ]; then
+    echo "$0: error: expected 80 lines in wav.scp, got $(wc -l <$dir/wav.scp)"
+    exit 1
+fi
diff --git a/egs/swbd/ASR/local/rt03_data_prep.sh b/egs/swbd/ASR/local/rt03_data_prep.sh
index 1545b7809..8a5f64324 100755
--- a/egs/swbd/ASR/local/rt03_data_prep.sh
+++ b/egs/swbd/ASR/local/rt03_data_prep.sh
@@ -15,30 +15,30 @@ if [ $# -ne 1 ]; then
 fi
 
 sdir=$1
-[ ! -d $sdir/data/audio/eval03/english/cts ] \
-    && echo Expecting directory $sdir/data/audio/eval03/english/cts to be present && exit 1;
-    [ ! -d $sdir/data/references/eval03/english/cts ] \
-        && echo Expecting directory $tdir/data/references/eval03/english/cts to be present && exit 1;
+[ ! -d $sdir/data/audio/eval03/english/cts ] &&
+    echo Expecting directory $sdir/data/audio/eval03/english/cts to be present && exit 1
+[ ! -d $sdir/data/references/eval03/english/cts ] &&
+    echo Expecting directory $tdir/data/references/eval03/english/cts to be present && exit 1
 
-    dir=data/local/rt03
-    mkdir -p $dir
+dir=data/local/rt03
+mkdir -p $dir
 
-    rtroot=$sdir
-    tdir=$sdir/data/references/eval03/english/cts
-    sdir=$sdir/data/audio/eval03/english/cts
+rtroot=$sdir
+tdir=$sdir/data/references/eval03/english/cts
+sdir=$sdir/data/audio/eval03/english/cts
 
-    find -L $sdir -iname '*.sph' | sort > $dir/sph.flist
-    sed -e 's?.*/??' -e 's?.sph??' $dir/sph.flist | paste - $dir/sph.flist \
-        > $dir/sph.scp
+find -L $sdir -iname '*.sph' | sort >$dir/sph.flist
+sed -e 's?.*/??' -e 's?.sph??' $dir/sph.flist | paste - $dir/sph.flist \
+    >$dir/sph.scp
 
-    sph2pipe=sph2pipe
-    ! command -v "${sph2pipe}" &> /dev/null \
-        && echo "Could not execute the sph2pipe program at $sph2pipe" && exit 1;
+sph2pipe=sph2pipe
+! command -v "${sph2pipe}" &>/dev/null &&
+    echo "Could not execute the sph2pipe program at $sph2pipe" && exit 1
 
-    awk -v sph2pipe=$sph2pipe '{
+awk -v sph2pipe=$sph2pipe '{
     printf("%s-A %s -f wav -p -c 1 %s |\n", $1, sph2pipe, $2);
     printf("%s-B %s -f wav -p -c 2 %s |\n", $1, sph2pipe, $2);
-}' < $dir/sph.scp | sort > $dir/wav.scp || exit 1;
+}' <$dir/sph.scp | sort >$dir/wav.scp || exit 1
 #side A - channel 1, side B - channel 2
 
 # Get segments file...
@@ -50,58 +50,58 @@ sdir=$1
 # en_4156 A unknown_speaker 301.85 302.48
 
 #grep -v ';;' $pem \
-cat $tdir/*.stm | grep -v ';;' | grep -v inter_segment_gap \
-    | awk '{
+cat $tdir/*.stm | grep -v ';;' | grep -v inter_segment_gap |
+    awk '{
     spk=$1"-"(($2==1)?"A":"B");
     utt=sprintf("%s_%06d-%06d",spk,$4*100,$5*100);
-    print utt,spk,$4,$5;}' \
-        | sort -u > $dir/segments
+    print utt,spk,$4,$5;}' |
+    sort -u >$dir/segments
 
 # stm file has lines like:
 # en_4156 A en_4156_A 357.64 359.64 <O,en,F,en-F>  HE IS A POLICE OFFICER
 # TODO(arnab): We should really be lowercasing this since the Edinburgh
 # recipe uses lowercase. This is not used in the actual scoring.
 #grep -v ';;' $tdir/reference/hub5e00.english.000405.stm \
-cat $tdir/*.stm | grep -v ';;' | grep -v inter_segment_gap \
-    | awk '{
+cat $tdir/*.stm | grep -v ';;' | grep -v inter_segment_gap |
+    awk '{
     spk=$1"-"(($2==1)?"A":"B");
     utt=sprintf("%s_%06d-%06d",spk,$4*100,$5*100);
-    printf utt; for(n=7;n<=NF;n++) printf(" %s", $n); print ""; }' \
-        | sort > $dir/text.all
+    printf utt; for(n=7;n<=NF;n++) printf(" %s", $n); print ""; }' |
+    sort >$dir/text.all
 
 # We'll use the stm file for sclite scoring.  There seem to be various errors
 # in the stm file that upset hubscr.pl, and we fix them here.
-cat $tdir/*.stm | \
-    sed -e 's:((:(:' -e 's:<B_ASIDE>::g' -e 's:<E_ASIDE>::g' | \
-    grep -v inter_segment_gap | \
+cat $tdir/*.stm |
+    sed -e 's:((:(:' -e 's:<B_ASIDE>::g' -e 's:<E_ASIDE>::g' |
+    grep -v inter_segment_gap |
     awk '{
-    printf $1; if ($1==";;") printf(" %s",$2); else printf(($2==1)?" A":" B"); for(n=3;n<=NF;n++) printf(" %s", $n); print ""; }'\
-        > $dir/stm
-            #$tdir/reference/hub5e00.english.000405.stm >  $dir/stm
-            cp $rtroot/data/trans_rules/en20030506.glm  $dir/glm
+    printf $1; if ($1==";;") printf(" %s",$2); else printf(($2==1)?" A":" B"); for(n=3;n<=NF;n++) printf(" %s", $n); print ""; }' \
+        >$dir/stm
+#$tdir/reference/hub5e00.english.000405.stm >  $dir/stm
+cp $rtroot/data/trans_rules/en20030506.glm $dir/glm
 
 # next line uses command substitution
 # Just checking that the segments are the same in pem vs. stm.
-! cmp <(awk '{print $1}' $dir/text.all) <(awk '{print $1}' $dir/segments) && \
-    echo "Segments from pem file and stm file do not match." && exit 1;
+! cmp <(awk '{print $1}' $dir/text.all) <(awk '{print $1}' $dir/segments) &&
+    echo "Segments from pem file and stm file do not match." && exit 1
 
-grep -v IGNORE_TIME_SEGMENT_ $dir/text.all > $dir/text
+grep -v IGNORE_TIME_SEGMENT_ $dir/text.all >$dir/text
 
 # create an utt2spk file that assumes each conversation side is
 # a separate speaker.
-awk '{print $1,$2;}' $dir/segments > $dir/utt2spk
-utils/utt2spk_to_spk2utt.pl $dir/utt2spk > $dir/spk2utt
+awk '{print $1,$2;}' $dir/segments >$dir/utt2spk
+utils/utt2spk_to_spk2utt.pl $dir/utt2spk >$dir/spk2utt
 
 # cp $dir/segments $dir/segments.tmp
 # awk '{x=$3-0.05; if (x<0.0) x=0.0; y=$4+0.05; print $1, $2, x, y; }' \
 #   $dir/segments.tmp > $dir/segments
 
-awk '{print $1}' $dir/wav.scp \
-    | perl -ane '$_ =~ m:^(\S+)-([AB])$: || die "bad label $_";
+awk '{print $1}' $dir/wav.scp |
+    perl -ane '$_ =~ m:^(\S+)-([AB])$: || die "bad label $_";
     print "$1-$2 $1 $2\n"; ' \
-        > $dir/reco2file_and_channel || exit 1;
+        >$dir/reco2file_and_channel || exit 1
 
-    ./utils/fix_data_dir.sh $dir
+./utils/fix_data_dir.sh $dir
 
-    echo Data preparation and formatting completed for RT-03
-    echo "(but not MFCC extraction)"
+echo Data preparation and formatting completed for RT-03
+echo "(but not MFCC extraction)"
diff --git a/egs/swbd/ASR/local/swbd1_data_prep.sh b/egs/swbd/ASR/local/swbd1_data_prep.sh
index 002740354..159359491 100755
--- a/egs/swbd/ASR/local/swbd1_data_prep.sh
+++ b/egs/swbd/ASR/local/swbd1_data_prep.sh
@@ -17,11 +17,10 @@
 ## will be using "find" to locate this file so we don't make any assumptions
 ## on the directory structure. (Peng Qi, Aug 2014)
 
-
 #check existing directories
 if [ $# != 1 -a $# != 2 ]; then
     echo "Usage: swbd1_data_prep.sh /path/to/SWBD [/path/to/SWBD_DOC]"
-    exit 1;
+    exit 1
 fi
 
 SWBD_DIR=$1
@@ -29,29 +28,27 @@ SWBD_DIR=$1
 dir=data/local/train
 mkdir -p $dir
 
-
 # Audio data directory check
 if [ ! -d $SWBD_DIR ]; then
     echo "Error: run.sh requires a directory argument"
-    exit 1;
+    exit 1
 fi
 
 sph2pipe=sph2pipe
-! command -v "${sph2pipe}" &> /dev/null \
-    && echo "Could not execute the sph2pipe program at $sph2pipe" && exit 1;
+! command -v "${sph2pipe}" &>/dev/null &&
+    echo "Could not execute the sph2pipe program at $sph2pipe" && exit 1
 
 # Option A: SWBD dictionary file check
-[ ! -f ./swb_ms98_transcriptions/sw-ms98-dict.text ] && \
-    echo  "SWBD dictionary file does not exist" &&  exit 1;
+[ ! -f ./swb_ms98_transcriptions/sw-ms98-dict.text ] &&
+    echo "SWBD dictionary file does not exist" && exit 1
 
 # find sph audio files
-find -L $SWBD_DIR -iname '*.sph' | sort > $dir/sph.flist
+find -L $SWBD_DIR -iname '*.sph' | sort >$dir/sph.flist
 
-n=`cat $dir/sph.flist | wc -l`
-[ $n -ne 2435 ] && [ $n -ne 2438 ] && \
+n=$(cat $dir/sph.flist | wc -l)
+[ $n -ne 2435 ] && [ $n -ne 2438 ] &&
     echo Warning: expected 2435 or 2438 data data files, found $n
 
-
 # (1a) Transcriptions preparation
 # make basic transcription file (add segments info)
 # **NOTE: In the default Kaldi recipe, everything is made uppercase, while we
@@ -64,11 +61,11 @@ stime=$2; etime=$3;
 printf("%s-%s_%06.0f-%06.0f",
 name, side, int(100*stime+0.5), int(100*etime+0.5));
 for(i=4;i<=NF;i++) printf(" %s", $i); printf "\n"
-}' ./swb_ms98_transcriptions/*/*/*-trans.text  > $dir/transcripts1.txt
+}' ./swb_ms98_transcriptions/*/*/*-trans.text >$dir/transcripts1.txt
 
 # test if trans. file is sorted
-export LC_ALL=C;
-sort -c $dir/transcripts1.txt || exit 1; # check it's sorted.
+export LC_ALL=C
+sort -c $dir/transcripts1.txt || exit 1 # check it's sorted.
 
 # Remove SILENCE, <B_ASIDE> and <E_ASIDE>.
 
@@ -77,22 +74,21 @@ sort -c $dir/transcripts1.txt || exit 1; # check it's sorted.
 # speech to somone; we will give phones to the other three (NSN, SPN, LAU).
 # There will also be a silence phone, SIL.
 # **NOTE: modified the pattern matches to make them case insensitive
-cat $dir/transcripts1.txt \
-    | perl -ane 's:\s\[SILENCE\](\s|$):$1:gi;
+cat $dir/transcripts1.txt |
+    perl -ane 's:\s\[SILENCE\](\s|$):$1:gi;
     s/<B_ASIDE>//gi;
     s/<E_ASIDE>//gi;
-    print;' \
-        | awk '{if(NF > 1) { print; } } ' > $dir/transcripts2.txt
-
+    print;' |
+    awk '{if(NF > 1) { print; } } ' >$dir/transcripts2.txt
 
 # **NOTE: swbd1_map_words.pl has been modified to make the pattern matches
 # case insensitive
-local/swbd1_map_words.pl -f 2- $dir/transcripts2.txt  > $dir/text
+local/swbd1_map_words.pl -f 2- $dir/transcripts2.txt >$dir/text
 
 # format acronyms in text
 python3 local/map_acronyms_transcripts.py -i $dir/text -o $dir/text_map \
     -M data/local/dict_nosp/acronyms.map
-    mv $dir/text_map $dir/text
+mv $dir/text_map $dir/text
 
 # (1c) Make segment files from transcript
 #segments file format is: utt-id side-id start-time end-time, e.g.:
@@ -102,15 +98,15 @@ segment=$1;
 split(segment,S,"[_-]");
 side=S[2]; audioname=S[1]; startf=S[3]; endf=S[4];
 print segment " " audioname "-" side " " startf/100 " " endf/100
-}' < $dir/text > $dir/segments
+}' <$dir/text >$dir/segments
 
 sed -e 's?.*/??' -e 's?.sph??' $dir/sph.flist | paste - $dir/sph.flist \
-    > $dir/sph.scp
+    >$dir/sph.scp
 
 awk -v sph2pipe=$sph2pipe '{
 printf("%s-A %s -f wav -p -c 1 %s |\n", $1, sph2pipe, $2);
 printf("%s-B %s -f wav -p -c 2 %s |\n", $1, sph2pipe, $2);
-}' < $dir/sph.scp | sort > $dir/wav.scp || exit 1;
+}' <$dir/sph.scp | sort >$dir/wav.scp || exit 1
 #side A - channel 1, side B - channel 2
 
 # this file reco2file_and_channel maps recording-id (e.g. sw02001-A)
@@ -118,15 +114,15 @@ printf("%s-B %s -f wav -p -c 2 %s |\n", $1, sph2pipe, $2);
 # sw02001-A  sw02001 A
 # In this case it's trivial, but in other corpora the information might
 # be less obvious.  Later it will be needed for ctm scoring.
-awk '{print $1}' $dir/wav.scp \
-    | perl -ane '$_ =~ m:^(\S+)-([AB])$: || die "bad label $_";
+awk '{print $1}' $dir/wav.scp |
+    perl -ane '$_ =~ m:^(\S+)-([AB])$: || die "bad label $_";
     print "$1-$2 $1 $2\n"; ' \
-        > $dir/reco2file_and_channel || exit 1;
+        >$dir/reco2file_and_channel || exit 1
 
-    awk '{spk=substr($1,1,9); print $1 " " spk}' $dir/segments > $dir/utt2spk \
-        || exit 1;
-            sort -k 2 $dir/utt2spk | utils/utt2spk_to_spk2utt.pl > $dir/spk2utt || exit 1;
+awk '{spk=substr($1,1,9); print $1 " " spk}' $dir/segments >$dir/utt2spk ||
+    exit 1
+sort -k 2 $dir/utt2spk | utils/utt2spk_to_spk2utt.pl >$dir/spk2utt || exit 1
 
-            echo Switchboard-1 data preparation succeeded.
+echo Switchboard-1 data preparation succeeded.
 
-            utils/fix_data_dir.sh data/local/train
+utils/fix_data_dir.sh data/local/train
diff --git a/egs/swbd/ASR/local/swbd1_prepare_dict.sh b/egs/swbd/ASR/local/swbd1_prepare_dict.sh
index 0c38a72dc..0bb98903f 100755
--- a/egs/swbd/ASR/local/swbd1_prepare_dict.sh
+++ b/egs/swbd/ASR/local/swbd1_prepare_dict.sh
@@ -5,32 +5,36 @@
 
 # To be run from one directory above this script.
 
-
 #check existing directories
-[ $# != 0 ] && echo "Usage: local/swbd1_data_prep.sh" && exit 1;
+[ $# != 0 ] && echo "Usage: local/swbd1_data_prep.sh" && exit 1
 
-srcdir=.  # This is where we downloaded some stuff..
+srcdir=. # This is where we downloaded some stuff..
 dir=./data/local/dict_nosp
 mkdir -p $dir
 srcdict=$srcdir/swb_ms98_transcriptions/sw-ms98-dict.text
 
 # assume swbd_p1_data_prep.sh was done already.
-[ ! -f "$srcdict" ] && echo "$0: No such file $srcdict" && exit 1;
+[ ! -f "$srcdict" ] && echo "$0: No such file $srcdict" && exit 1
 
-cp $srcdict $dir/lexicon0.txt || exit 1;
+cp $srcdict $dir/lexicon0.txt || exit 1
 chmod a+w $dir/lexicon0.txt
-patch <local/dict.patch $dir/lexicon0.txt || exit 1;
+patch <local/dict.patch $dir/lexicon0.txt || exit 1
 
 #(2a) Dictionary preparation:
 # Pre-processing (remove comments)
-grep -v '^#' $dir/lexicon0.txt | awk 'NF>0' | sort > $dir/lexicon1.txt || exit 1;
+grep -v '^#' $dir/lexicon0.txt | awk 'NF>0' | sort >$dir/lexicon1.txt || exit 1
 
-cat $dir/lexicon1.txt | awk '{ for(n=2;n<=NF;n++){ phones[$n] = 1; }} END{for (p in phones) print p;}' | \
-    grep -v sil > $dir/nonsilence_phones.txt  || exit 1;
+cat $dir/lexicon1.txt | awk '{ for(n=2;n<=NF;n++){ phones[$n] = 1; }} END{for (p in phones) print p;}' |
+    grep -v sil >$dir/nonsilence_phones.txt || exit 1
 
-( echo sil; echo spn; echo nsn; echo lau ) > $dir/silence_phones.txt
+(
+    echo sil
+    echo spn
+    echo nsn
+    echo lau
+) >$dir/silence_phones.txt
 
-echo sil > $dir/optional_silence.txt
+echo sil >$dir/optional_silence.txt
 
 # No "extra questions" in the input to this setup, as we don't
 # have stress or tone.
@@ -41,9 +45,14 @@ cp local/MSU_single_letter.txt $dir/
 # Add single letter lexicon
 # The original swbd lexicon does not have precise single letter lexicion
 # e.g. it does not have entry of W
-( echo '!sil sil'; echo '[vocalized-noise] spn'; echo '[noise] nsn'; \
-    echo '[laughter] lau'; echo '<unk> spn' ) \
-    | cat - $dir/lexicon1.txt $dir/MSU_single_letter.txt  > $dir/lexicon2.txt || exit 1;
+(
+    echo '!sil sil'
+    echo '[vocalized-noise] spn'
+    echo '[noise] nsn'
+    echo '[laughter] lau'
+    echo '<unk> spn'
+) |
+    cat - $dir/lexicon1.txt $dir/MSU_single_letter.txt >$dir/lexicon2.txt || exit 1
 
 # Map the words in the lexicon.  That is-- for each word in the lexicon, we map it
 # to a new written form.  The transformations we do are:
@@ -77,16 +86,16 @@ cp local/MSU_single_letter.txt $dir/
 # in the lexicon.
 
 local/swbd1_map_words.pl -f 1 $dir/lexicon2.txt | sort -u \
-    > $dir/lexicon3.txt || exit 1;
+    >$dir/lexicon3.txt || exit 1
 
 python3 local/format_acronyms_dict.py -i $dir/lexicon3.txt -o $dir/lexicon4.txt \
     -L $dir/MSU_single_letter.txt -M $dir/acronyms_raw.map
-    cat $dir/acronyms_raw.map | sort -u > $dir/acronyms.map
+cat $dir/acronyms_raw.map | sort -u >$dir/acronyms.map
 
-    ( echo 'i ay' )| cat - $dir/lexicon4.txt | tr '[A-Z]' '[a-z]' | sort -u > $dir/lexicon5.txt
+(echo 'i ay') | cat - $dir/lexicon4.txt | tr '[A-Z]' '[a-z]' | sort -u >$dir/lexicon5.txt
 
-    pushd $dir >&/dev/null
-    ln -sf lexicon5.txt lexicon.txt # This is the final lexicon.
-    popd >&/dev/null
-    rm $dir/lexiconp.txt 2>/dev/null
-    echo Prepared input dictionary and phone-sets for Switchboard phase 1.
+pushd $dir >&/dev/null
+ln -sf lexicon5.txt lexicon.txt # This is the final lexicon.
+popd >&/dev/null
+rm $dir/lexiconp.txt 2>/dev/null
+echo Prepared input dictionary and phone-sets for Switchboard phase 1.
diff --git a/egs/swbd/ASR/prepare.sh b/egs/swbd/ASR/prepare.sh
index ae0b278b1..6ac7dbf9e 100755
--- a/egs/swbd/ASR/prepare.sh
+++ b/egs/swbd/ASR/prepare.sh
@@ -78,28 +78,28 @@ if [ $stage -le 1 ] && [ $stop_stage -ge 1 ]; then
             cp data/local/${x}/text data/local/${x}/text.org
             paste -d "" \
                 <(cut -f 1 -d" " data/local/${x}/text.org) \
-                <(awk '{$1=""; print tolower($0)}' data/local/${x}/text.org | perl -pe 's| \(\%.*\)||g' | perl -pe 's| \<.*\>||g' | sed -e "s/(//g" -e "s/)//g") \
-                | sed -e 's/\s\+/ /g' > data/local/${x}/text
-                            rm data/local/${x}/text.org
-                        done
+                <(awk '{$1=""; print tolower($0)}' data/local/${x}/text.org | perl -pe 's| \(\%.*\)||g' | perl -pe 's| \<.*\>||g' | sed -e "s/(//g" -e "s/)//g") |
+                sed -e 's/\s\+/ /g' >data/local/${x}/text
+            rm data/local/${x}/text.org
+        done
 
-                        python ./local/filter_empty_text.py --kaldi-data-dir data/local/eval2000
-                        ./utils/fix_data_dir.sh data/local/eval2000
-                        lhotse kaldi import data/local/eval2000 8000 data/manifests_eval2000
-                        mv data/manifests_eval2000/recordings.jsonl.gz data/manifests_eval2000/swbd_recordings_eval2000.jsonl.gz
-                        mv data/manifests_eval2000/supervisions.jsonl.gz data/manifests_eval2000/swbd_supervisions_eval2000.jsonl.gz
+        python ./local/filter_empty_text.py --kaldi-data-dir data/local/eval2000
+        ./utils/fix_data_dir.sh data/local/eval2000
+        lhotse kaldi import data/local/eval2000 8000 data/manifests_eval2000
+        mv data/manifests_eval2000/recordings.jsonl.gz data/manifests_eval2000/swbd_recordings_eval2000.jsonl.gz
+        mv data/manifests_eval2000/supervisions.jsonl.gz data/manifests_eval2000/swbd_supervisions_eval2000.jsonl.gz
 
-                        python ./local/filter_empty_text.py --kaldi-data-dir data/local/rt03
-                        ./utils/fix_data_dir.sh data/local/rt03
-                        lhotse kaldi import data/local/rt03 8000 data/manifests_rt03
-                        mv data/manifests_rt03/recordings.jsonl.gz data/manifests_rt03/swbd_recordings_rt03.jsonl.gz
-                        mv data/manifests_rt03/supervisions.jsonl.gz data/manifests_rt03/swbd_supervisions_rt03.jsonl.gz
+        python ./local/filter_empty_text.py --kaldi-data-dir data/local/rt03
+        ./utils/fix_data_dir.sh data/local/rt03
+        lhotse kaldi import data/local/rt03 8000 data/manifests_rt03
+        mv data/manifests_rt03/recordings.jsonl.gz data/manifests_rt03/swbd_recordings_rt03.jsonl.gz
+        mv data/manifests_rt03/supervisions.jsonl.gz data/manifests_rt03/swbd_supervisions_rt03.jsonl.gz
 
-                        lhotse fix data/manifests_train/swbd_recordings_all.jsonl.gz data/manifests_train/swbd_supervisions_all.jsonl.gz data/manifests
-                        lhotse fix data/manifests_eval2000/swbd_recordings_eval2000.jsonl.gz data/manifests_eval2000/swbd_supervisions_eval2000.jsonl.gz data/manifests
-                        lhotse fix data/manifests_rt03/swbd_recordings_rt03.jsonl.gz data/manifests_rt03/swbd_supervisions_rt03.jsonl.gz data/manifests
+        lhotse fix data/manifests_train/swbd_recordings_all.jsonl.gz data/manifests_train/swbd_supervisions_all.jsonl.gz data/manifests
+        lhotse fix data/manifests_eval2000/swbd_recordings_eval2000.jsonl.gz data/manifests_eval2000/swbd_supervisions_eval2000.jsonl.gz data/manifests
+        lhotse fix data/manifests_rt03/swbd_recordings_rt03.jsonl.gz data/manifests_rt03/swbd_supervisions_rt03.jsonl.gz data/manifests
 
-                        touch data/manifests/.swbd.done
+        touch data/manifests/.swbd.done
     fi
 fi
 
@@ -260,11 +260,11 @@ if [ $stage -le 8 ] && [ $stop_stage -ge 8 ]; then
             -ngram-order 3 \
             -text ${lang_dir}/input.txt \
             -lm data/lm/3-gram.arpa
-                    python3 -m kaldilm \
-                        --read-symbol-table="data/lang_phone/words.txt" \
-                        --disambig-symbol='#0' \
-                        --max-order=3 \
-                        data/lm/3-gram.arpa >data/lm/G_3_gram.fst.txt
+        python3 -m kaldilm \
+            --read-symbol-table="data/lang_phone/words.txt" \
+            --disambig-symbol='#0' \
+            --max-order=3 \
+            data/lm/3-gram.arpa >data/lm/G_3_gram.fst.txt
     fi
 
     if [ ! -f data/lm/G_4_gram.fst.txt ]; then
@@ -273,11 +273,11 @@ if [ $stage -le 8 ] && [ $stop_stage -ge 8 ]; then
             -ngram-order 4 \
             -text ${lang_dir}/input.txt \
             -lm data/lm/4-gram.arpa
-                    python3 -m kaldilm \
-                        --read-symbol-table="data/lang_phone/words.txt" \
-                        --disambig-symbol='#0' \
-                        --max-order=4 \
-                        data/lm/4-gram.arpa >data/lm/G_4_gram.fst.txt
+        python3 -m kaldilm \
+            --read-symbol-table="data/lang_phone/words.txt" \
+            --disambig-symbol='#0' \
+            --max-order=4 \
+            data/lm/4-gram.arpa >data/lm/G_4_gram.fst.txt
     fi
 fi
 
@@ -325,7 +325,7 @@ if [ $stage -le 11 ] && [ $stop_stage -ge 11 ]; then
             --bpe-model $lang_dir/bpe.model \
             --lm-data data/lang_phone/input.txt \
             --lm-archive $out_dir/lm_data.pt
-        done
+    done
 fi
 
 # if [ $stage -le 12 ] && [ $stop_stage -ge 12 ]; then
@@ -373,8 +373,8 @@ if [ $stage -le 13 ] && [ $stop_stage -ge 13 ]; then
                 --bpe-model $lang_dir/bpe.model \
                 --lm-data $out_dir/${testset}.txt \
                 --lm-archive $out_dir/lm_data-${testset}.pt
-            done
         done
+    done
 fi
 
 if [ $stage -le 14 ] && [ $stop_stage -ge 14 ]; then
@@ -393,11 +393,11 @@ if [ $stage -le 14 ] && [ $stop_stage -ge 14 ]; then
             --in-lm-data $out_dir/lm_data.pt \
             --out-lm-data $out_dir/sorted_lm_data.pt \
             --out-statistics $out_dir/statistics.txt
-                    for testset in ${testsets[@]}; do
-                        ./local/sort_lm_training_data.py \
-                            --in-lm-data $out_dir/lm_data-${testset}.pt \
-                            --out-lm-data $out_dir/sorted_lm_data-${testset}.pt \
-                            --out-statistics $out_dir/statistics-test-${testset}.txt
-                        done
-                    done
+        for testset in ${testsets[@]}; do
+            ./local/sort_lm_training_data.py \
+                --in-lm-data $out_dir/lm_data-${testset}.pt \
+                --out-lm-data $out_dir/sorted_lm_data-${testset}.pt \
+                --out-statistics $out_dir/statistics-test-${testset}.txt
+        done
+    done
 fi