Append to end of each line of file without a temp file.

Shell Programming and Scripting
1

Hello I am trying to append an incrimenting number to the end of each line I have it working with a temp file. But I want to do this without a temp file.

a=1
cat "file" | while read LINE
        do
                echo "$LINE, $a" >> filewithnumbers
                a=`expr $a + 1`
        done
2

ALL operations like this create a tmpfile somewhere.
You can use perl -pie ' perl code here' Aslo consider nl:

nl file > newfile
3

With awk (tested with gawk and AIX awk) :

awk '{ line[NR]=$0 } END { for (i=1; i<=NR; i++) print line,i > FILENAME}' inputfile

Jean-Pierre.

4

With perl:

perl -i -ple'$_="$_  $."' file
5 
 awk '{print $0","NR}' infile

should work