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

rorey_breaker · #1 (**permalink**) 04-03-2008

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.

Code:

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

jim mcnamara · #2 (**permalink**) 04-03-2008

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

Code:

nl file > newfile

aigles · #3 (**permalink**) 04-03-2008

With awk (tested with gawk and AIX awk) :

Code:

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

Jean-Pierre.

radoulov · #4 (**permalink**) 04-03-2008

With perl:

Code:

perl -i -ple'$_="$_  $."' file

Tytalus · #5 (**permalink**) 04-03-2008

Code:

 awk '{print $0","NR}' infile

should work

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