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Commands using env

Commands using env from sorted by
Terminal - Commands using env - 9 results
hl-nonprinting () { local C=$(printf '\033[0;36m') B=$(printf '\033[0;46m') R=$(printf '\033[0m') np=$(env printf "\u00A0\uFEFF"); sed -e "s/\t/${C}▹&$R/g" -e "s/$/${C}⁋$R/" -e "s/[$np]/${B}& $R/g";}
2012-11-07 10:09:40
User: unhammer
Functions: env printf sed
Tags: tabs whitespace non-printing
-1
Up
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bash function to highlight non-printing characters: tab, newline, BOM, nbsp

Can't see it here, but the non-breaking space is highlighted :)

Of course,

cat -t -e

achieves something similar, but less colourful.

Could add more code points from https://en.wikipedia.org/wiki/Space_%28punctuation%29#Spaces_in_Unicode

Show sample output | Comments (1) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
10,30,50 * * * * ping -q -c1 -w3 192.168.0.14 | grep '1 received' - || env DISPLAY=:0 xeyes
2012-02-06 09:40:11
User: knoppix5
Functions: env grep ping
Tags: ping host crontab
-2
Up
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Make alert if host is 'dead' or not reachable

Every 20 minutes ping host with IP address 192.168.0.14. If it's not 'alive' or not reachable, then display something eye-catching (here xeyes) on the desktop.

Hint for newbies: edit crontab with

crontab -e
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sudo env ARCHFLAGS="-arch x86_64" gem install mysql
2011-07-05 22:20:03
User: evandrix
Functions: env install sudo
0
Up
Down
Install mysql-2.8.1 rubygem on Mac OS X 10.6 (Snow Leopard)
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env LC_CTYPE=C tr -dc "a-zA-Z0-9-_\$\?" < /dev/urandom | head -c 10
2011-02-22 17:09:44
User: aerickson
Functions: env head tr
Tags: password random generate mac os x
0
Up
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generate random password (works on Mac OS X)

Prepending

env LC_CTYPE=C

fixes a problem with bad bytes in /dev/urandom on Mac OS X

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set env DYLD_INSERT_LIBRARIES = /usr/lib/libgmalloc.dylib;b szone_error
2010-10-13 20:25:48
User: frank514
Functions: env set
0
Up
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Setting gdb in memory allocation debugging mode under MAC OS X

setting gdb with this option / breakpoint before running the process will cause it to break whenever an memory allocation operation is not kosher.

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sh -c 'if pgrep x2vnc && env LC_ALL=C xmessage -button "Kill it:0,Ignore it:1" "Another connection is already running. Should I kill it instead of ignoring it?"; then killall x2vnc; fi; x2vnc -passwd /home/Ariel/.vnc/passwd -east emerson:0'
2010-07-06 09:11:12
User: zhangweiwu
Functions: env killall sh
Tags: Process Management X Window
0
Up
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create an application launcher shortcut that allow only one process of it running

This command is suitable to use as application launching command for a desktop shortcut. It checks if the application is already running by pgrepping its process ID, and offer user to kill the old process before starting a new one.

It is useful for a few x11 application that, if re-run, is more likely a mistake. In my example, x2vnc is an x11 app that does not quit when its connection is broken, and would not work well when a second process establish a second connection after the first broken one.

The LC_ALL=C for xmesseng is necessary for OpenSUSE systems to avoid a bug. If you don't find needing it, remove the "env LC_ALL=C" part

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alias rc='ssh ${MEDIAPCHOSTNAME} env DISPLAY=:0.0 rhythmbox-client --no-start'
2010-01-17 19:43:43
User: rhythmx
Functions: alias env
9
Up
Down
Remote control for Rhythmbox on an Ubuntu Media PC

Note: you'll want to set up pub-key ssh auth. Gives you a quick means of changing volume/tracks/etc for rhythmbox on a remote machine. E.g.:

rc --next # Play next track

rc --print-playing # Grab the name

rc --volume-down

rc --help

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env PS4=' ${BASH_SOURCE}:${LINENO}(${FUNCNAME[0]}) ' sh -x /etc/profile
2009-10-07 14:44:59
User: oernii2
Functions: env sh
Tags: bash debug oernii
16
Up
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More precise BASH debugging
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find . -type d -exec env d="$dest_root" sh -c ' exec mkdir -p -- "$d/$1"' '{}' '{}' \;
2009-08-03 12:21:37
User: hahnst
Functions: env exec find mkdir sh
7
Up
Down
Copy a directory recursively without data/files
Show sample output | Comments (1) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate