Unix Tip: LINE NUMBERS IN LINUX

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Unix Tip 2972 - March 27, 2010

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LINE NUMBERS IN LINUX

If you want a file with line numbers (say for printing). You can use the "nl" command in linux.

$ nl file.c > file.c.num

See man for more options. Normally nl gives line numbers only for non blank lines.

To force it to give it to all lines use -ba option:

$ nl -ba file.c >file.c.all_num

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