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prints line numbers

Terminal - prints line numbers
sed '/./=' infile | sed '/^/N; s/\n/ /'
2009-12-10 16:24:56
User: glaudiston
Functions: sed
-1
prints line numbers

There's too many options to number,

My curiosity has forced me to make it using only sed.

Maybe useful... or not... :-S

Alternatives

There are 2 alternatives - vote for the best!

Terminal - Alternatives
nl
cat -n
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 ;)

Know a better way?

If you can do better, submit your command here.

What others think

@glaudiston: I like the sed version. I tried but couldn't figure how to get rid of the extra line feed caused by =.

Comment by putnamhill 289 weeks and 6 days ago

I'm not keen on this version. I have found instances where the numbers end up at the end of some lines. Also no numbers are provided for blank lines.

Comment by jgc 289 weeks and 5 days ago

putnamhill and igc,

try this way:

cat infile | sed "/^/=" | sed "N;s/\n/. /"
Comment by glaudiston 279 weeks ago

Your point of view

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