Shell tricks - Programming On Unix
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Alignment with sed
If you ever tried to align the output of a command? column(1) is the tool you need, but it is not in POSIX, and only takes one-character separator, and you might want to only align to the first separator. A `while read' with printf is a bit cumbersome and slow, let's use the almighty stream editor with two expressions: Code: s/SEPARATOR/ / # replace the SEPARATOR (any sed expression) with enough spacesTo be used this way (but use `column -t -s : /etc/passwd' instead in this case): Code: $ sed -r -e 's/:/ /' -e 's/(.{12}[^ ]*) */\1 /' /etc/passwdThere are a few caveats: if a long input contains spaces before the separator: Code: $ printf 'w w w w w w w w w w w w:<- separator\n' | sed -r -e 's/:/ /' -e 's/(.{12}[^ ]*) */\1:/'But for known inputs, it works ok. [edit]: typo |
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Shell tricks - by josuah - 13-11-2017, 05:27 AM
RE: Shell tricks - by josuah - 13-11-2017, 05:39 AM
RE: Shell tricks - by venam - 14-11-2017, 01:53 AM
RE: Shell tricks - by josuah - 23-11-2017, 07:59 AM
RE: Shell tricks - by josuah - 23-11-2017, 08:52 AM
RE: Shell tricks - by josuah - 04-12-2017, 07:43 AM
RE: Shell tricks - by z3bra - 04-12-2017, 08:11 PM
RE: Shell tricks - by josuah - 05-12-2017, 08:07 AM
RE: Shell tricks - by josuah - 05-12-2017, 09:02 AM
RE: Shell tricks - by josuah - 05-12-2017, 09:08 AM
RE: Shell tricks - by josuah - 08-12-2017, 12:25 PM
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