how to know the line number - UNIX for Dummies Questions & Answers

ariuscy · #1 09-23-2005

hi all, how to know the line that the file currently reading

example:
exec 4<$1
while read eachline <&4
do
if [ "$eachline" == "POST" ]
then
/*here i want to which line number when it reads 'POST'

fi
done

please comment , thanks

vino · #2 09-23-2005

Try this grep solution

Code:

grep -n 'POST' input.file

or this

awk solution

Code:

awk '{ ++i; if ( $0 ~ /POST/ ) print i,$0 }' input.file

vino

Unbeliever · #3 09-23-2005

Or if you need it within the construct of your shell script, $line will contain the current line number that has just been read

Code:

line=0
exec 4<$1
while read eachline <&4
do
line=$((line + 1)
if [ "$eachline" == "POST" ]
then
/*here i want to which line number when it reads 'POST'

fi
done

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