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prints line numbers

Terminal - prints line numbers
cat -n
2009-12-08 16:35:55
User: putnamhill
Functions: cat
4
prints line numbers

Alternatives

There are 2 alternatives - vote for the best!

Terminal - Alternatives
nl
ls | sed "/^/=" | sed "N;s/\n/. /"
2010-01-06 16:00:39
User: glaudiston
Functions: ls sed
2

the sed way to print line numbers

grep -n "^" <filename>
2010-01-07 14:54:29
User: JohnGH
Functions: grep
2

If you don't have nl on your system, this achieves a similar effect, the default behavior in nl is to not number blank lines, but this does.

perl -pe 'print "$. "' <file>
2009-12-08 16:11:51
User: sputnick
Functions: perl
0

No need $_ netp ;)

perl -e 'use strict; use warnings; my $c; my $file = $ARGV[0]; open my $handle, "<", $file or die "$0: $file: $!\n"; while (<$handle>) { print $c++, " " x 5, $_; } close($handle);' <FILE>
2009-12-09 16:07:14
User: sputnick
Functions: perl
0

This is a joke for @putnamhill and @glaudiston

I'm pretty sure we can write longer if we want ;)

Know a better way?

If you can do better, submit your command here.

What others think

also see the 'nl' number lines tool from coreutils does this as well with a few more features, like only numbering lines that match a regex, etc.

Comment by bwoodacre 351 weeks ago

Thanks. I don't have nl, but I'll check it out.

Comment by putnamhill 351 weeks ago

Your point of view

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