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Take the variables out of the single quotes...
sed 's/1111/'${A}'/g;s/2222/'${B}'/g;s/3333/'${C}'/g' file > anotherfile

At least that should always work. For the example you posted, it looks...

Ow that is right I tested it in ksh93. Bash can't deal with that.

Alternatively:
res1=$(date +%s.%N)
sleep 1
res2=$(date +%s.%N)
echo "Start time: $res1"
echo "Stop time: $res2"
echo...

You need to add a command name between the sh command string and the arguments that find will pass to the shell. If the command name is absent, the first pathname from find will be assigned to $0...

Hi All,

recently i came across this site txt2re (http://txt2re.com/index-perl.php3) site is good for learning how to write regular expression.

P.S : Mods I was not sure where to post this...

No need to kludge with awk and temporary files, there's a built-in utility to do this job: xargs.

xargs -n 1 ./myscript < listfile will run ./myscript firstline then ./myscript secondline, etc,...