$ \foo
A simple directive which disables all aliases and functions for the command immediately following it. Shortcut for the bash built-in ‘command’ – “command linefoo”.
Think, {sic}…
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$ cp /work/host/phone/ui/main.cpp !#$:s/host/target
expand to:
cp /work/host/phone/ui/main.cpp /work/target/phone/ui/main.cpp
!#
The entire command line typed so far.
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$ var=’123456789′; echo ${var:<start_pos>:<offset>}
substrings a variable starting at position.
If no offset given prints rest of the line
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by Davi…
$ read -ra words <<< "<sentence>" && echo "${words[@]^}"
I find it useless but definitely simpler than #9230
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by…
$ mkfifo foo; script -f foo
One person does `mkfifo foo; script -f foo’ and another can supervise real-time what is being done using `cat foo’.
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by David Win…
$ du -h /path | sort -h
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by David Winterbottom (codeinthehole.com)
$ grep . *
If you have a bunch of small files that you want to cat to read, you can cat each alone (boring); do a cat *, and you won’t see what line is for what file, or do a grep . *. “.” will match any string and grep in multifile mode will place a $…
$ column -tns: /etc/passwd
-n switch keeps empty columns
If your distribution does not ship with a recent column version that supports -n you can use this alternative:
perl -pe ‘s/(^|;);/$1 ;/g’ file.csv | column -ts\; | less -S
Change the delimiter to…
$ date –set="$(ssh user@server date)"
Shorter, easier to remember version of cmd#7636
NTP is better, but there are situations where it can’t be used. In those cases, you can do this to sync the local time to a server.
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$ <COMMAND> |:
This is shorter and actually much faster than >/dev/null (see sample output for timings)
Plus, it looks like a disappointed face emoticon.
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