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Try this -

awk -F "^" '{print $1}' op.dat

Please try below command. It renames all files in directory/subdirectories.


find . -type f -name "*?" | while read file; do mv "$file" "${file%?}"; done

Try this -
sed 's/'"$str1"'/|/' xyz_file.txt


Please use CODE tags as required by forum rules!

Below code might help you.
awk -F 892 ' (++i) {print i + substr ($2,1,3) }' <filename>

You can use grep -il <string you want to search for> *
or
grep -ic <string you want to search for> *