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Questions tagged [environment]

95 questions
42
votes
2 answers

Is there a difference between "." and "source" in bash, after all?

I was looking for the difference between the "." and "source" builtin commands and a few sources (e.g., in this discussion, and the bash manpage) suggest that these are just the same. However, following a problem with environment variables, I…
ysap
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30
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5 answers

Stop/start battery charging through software?

If a laptop is powered on and connected to AC power, is there a way to issue a command that tells it not to charge the battery? EDITED: Perhaps charging of the battery may be stopped if there were a way to fool the system into thinking the battery…
Sepero
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19
votes
2 answers

Why use env in shebang?

What is the purpose of using #!/usr/bin/env shebang compared to #!/bin/bash, #!/bin/sh or #!/usr/bin/python?
Tuminoid
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8
votes
4 answers

I set an environment variable in /etc/environment, but it's not in printenv using bash.exe with Windows cmd. Why?

I'm using WSL and I'm quite new on Linux. I have set an environment variable in /etc/environment called TESTVAR. This variable is required for some projects and it's working just fine when I'm running Bash directly. But if I'm running a Linux…
0x1337
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8
votes
2 answers

Setting LOG=1 in /etc/environment

I asked a question earlier about viewing the history of notify-osd using the indicator-notifications app. The answer was that I needed to add LOG=1 in my /etc/environment file. That sounded suspicious and I didn't do it because: It's in the global…
Parto
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7
votes
1 answer

how to include an environment variable in the launcher?

I was trying to make some scripts dynamic by including the environment variable $LOGNAME and even $HOME. but it don't seem to work when placed in a launcher. I am trying to make code a bit more dynamic /home/simon/Desktop/firefox_test.bash I tried…
chip
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6
votes
2 answers

Why doesn't JSLint/JSHint work in Ubuntu?

I installed as described here and other places, but after using npm to install jslint, jshint, neither will work. Running "jslint", I only get: /usr/bin/env: node: No such file or directory Is there something wrong with the Ubuntu 13.10 repo, or do…
NoBugs
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6
votes
2 answers

Difference between /etc/security/pam_env.conf and /etc/environment + making sudo read pam_env.conf

I struggle to see the difference between pam_env.conf and /etc/environment. To me they both do the same thing, with a difference syntax. The manpages were no help. So what is the difference? Additionally, I'd like to find a way to add paths to the…
Norswap
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6
votes
2 answers

Can I set different passwords for different desktop environments?

I have installed GNOME, Unity and Cairo Dock desktop environments. I wanted to set different passwords for each. Is this possible by any means? Thank you.
kernel_panic
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5
votes
1 answer

Location to place systemd service EnvironmentFile when creating debian package

I am currently rewriting upstart jobs to use systemd and I wanted to know: where is the "default" place to an EnvironmentFile? It could potentially go in /etc/environment It could be with all the other service files in /etc/systemd/service,…
Wimateeka
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5
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1 answer

How green are Ubuntu and Canonical?

im a student of Environmental Engineering, currently searching for a Bachelor Thesis Theme. I am curious, if there any internal information about Ubuntu related to CO2/Energy saving compared to other Operating Systems. and what Canonical does for…
user73317
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4
votes
2 answers

How to free up some disk space on my Linux machine?

I'm still new to the Linux world, My disk size is 493 G And when I use the command du -hs * /opt/conda, The total size I use is less than 95g But when I use the df -h command: Disk Size is 493 G Used 404 G Available 89 G So, (493 - 95) = 398 G…
Kareem Shehata
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4
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0 answers

OpenMPI - Update alternatives

I have troubles with openmpi crashing. The installed/repository version is "mpirun (Open MPI) 3.1.3". Consequently I have locally built a "mpirun (Open MPI) 4.1.0" which does not crash. I would now like to make the freshly installed version (located…
Torben
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4
votes
2 answers

Why $PATH is not reflecting what is in the environment file, Ubuntu 18.04?

echo $PATH provides: /usr/local/sbin:/usr/local/bin:/usr/bin:/sbin:/bin while /etc/environment states PATH="/usr/local/sbin:/usr/local/bin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games" I though the environment file is responsible for setting…
Uranium
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3
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0 answers

How to customize default live session user desktop and environment on Kubuntu while remastering it?

I am chrooting into a kubuntu iso file with cubic and installing and modifying stuff I need to change for my custom live iso. But something I couldn't figure out is how to customize the default live session's user environment, including its…
KerryGee
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