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# tested with bash 4 (regex 3.2+)
[[ $string =~ ([[:alpha:]]+).[^[:alpha:]]*$ ]]
echo ${BASH_REMATCH[0]% *}

while read a b c; do echo $a; done <file

you are making it worse.

you can use file command's -i option. or --mime-type

#!/bin/bash
# tested on bash 4
shopt -s nullglob
for files in index*html*
do
echo mv "${files}" "${files%.*}"
done

#!/bin/bash
# tested on bash 4

while read -r -a array
do
for x in "${array[@]}"
do
case "$x" in
SLP_*) echo $x
esac
done
done < file

#!/bin/bash
# bash 4
declare -i count=0
shopt -s globstar
shopt -s nullglob
for files in **/*
do
if [ -f "$files" ] ;then
if [ "${files##*/}" = "abc.txt" ];then
continue
...

Just try it out on the command line. It takes less than 5 seconds to execute it than posting and waiting to get an answer. Put an "echo" in front of the rm command to see if your files are properly...

#!/bin/bash
#tested with bash 4

content=$(<file)
while [[ $content =~ Elapsed ]]
do
c=${content#*Elapsed}
case "${content%%Elapsed*}" in
*SQL*ERROR*)
echo...

you are just using shell commands inside Perl. ! You do know that Perl is capable of string processing on its own, right? And why is your shebang !Perl ?

declare -i toggle=0
while read -r line
do
case "$line" in
*Reference_Data*) toggle=1;;
esac
done < file
if [ $toggle -eq 0 ] ;then
echo "Not found"
else
echo "Found"
fi

#!/bin/bash
# bash 4 tested
declare -i num=0
while read -r line
do
((num++))
if (( $num >50000 ));then
echo "$line"
fi
if (( $num == 100001 ));then
exit
...

#!/bin/bash
# tested on bash 4
declare -i toggle=0
while read -r line
do
case "$line" in
*start*)
toggle=1
line="${line#start}"
;;
...

num=0
for files in *keyword*
do
cp $files /destination && ((num++))
done
echo "how many files : $num"

#!/bin/bash
# tested on bash 4
while read -r line
do
case "$line" in
*Mon\ *|*Tue\ *|*Wed\ *|*Thu\ *|*Fri\ *|*Sat\ *|*Sun\ *)
[[ $line =~...

You must have an old Solaris box.

for files in CRDT*
do
cp "$files" "${files/CRDT/crdt_lon}"
done

#!/bin/bash
# tested with bash 4
file2=$(<file2)
while read -r line
do
case "$line" in
*NOVEMBER*)
line="$file2"
;;
esac
echo "$line"
done < file1 > t...

#!/bin/bash
# tested on bash 4
shopt -s globstar
shopt -s nullglob
numfiles=0
for files in **/*.xls
do
cp -p "$files" /destination
((numfiles++))
done
echo $numfiles

$> who|while read -r u; do echo "hello ${u%% *}" ;done

#!/bin/bash
# bash 3.2+
declare -a array
while read -r line
do
array=( $line )
case ${#array[@]} in
10) echo "$line";;
esac
done < file > t
mv t file

#!/bin/bash
# bash 3.2+
while read -r line
do
[[ $line =~ (Balance;.[^;]*) ]]
echo ${BASH_REMATCH[0]}
done < inputfile

#!/bin/bash
# bash 3.2+
ex_byte=bb32
if [[ $ex_byte =~ [a-z] ]];then
echo "Not ok"
elif [[ $ex_byte =~ [A-Z]+[0-9]+|[0-9]+[A-Z]+ ]] ; then
echo "ok"
fi




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