All Questions
14 questions
0
votes
1
answer
248
views
Is it a good idea to put "export BASH_ENV=~/.bashrc" in my .bashrc?
Let's say my Bash has some extensive ~/.bashrc customization that aids me not only in interactive use, but also in scripting (aliases, functions, variables, etc.). I would like to have this available ...
- 262
1
vote
1
answer
635
views
Why not prepend user directory to PATH?
For user scripts, the usual advice is to append their directory to $PATH in one's .profile:
PATH="$PATH:$HOME/.myscripts" # or .bin or whatever
Apparently that is safer than prepending it: ...
- 273
1
vote
1
answer
7k
views
Run a Bash Script from Python and import the exported environment variables into Python
I have the following Bash script called Test_Vars.sh
#!/bin/bash
#----------------------------------------------------#
# Environment Variables being used in the process #
#------------------------...
- 11
0
votes
1
answer
661
views
sudo crontab notify-send doesn't work
I have read similar posts here, here, here and here that mentioned some environment variables DISPLAY and DBUS_SESSION_BUS_ADDRESS. Setting them at the top of my user crontab enabled notify-send to ...
- 103
0
votes
0
answers
3k
views
Get environment variable from python script
I have bash script config.sh in which several variables are exported , and I need those variable in my python script.
config.sh
export VAR="YES"
My approach is to source the config.sh from the ...
- 369
-1
votes
2
answers
142
views
Is this allowed in an `if statement`? [closed]
# optional cropping
if [ "$1" == "cropit" ]; then
ITS_CROP_TIME=
mkdir cropped; for i in *.mp4; do ffmpeg -i "$i" -filter:v "crop=1920:980:0:-100" cropped/"${i%.*}.mp4"
rm -r *.mp4
cd ...
- 533
42
votes
3
answers
207k
views
import environment variables in a bash script
I set some environment variables in a terminal, and then run my script. How can I pull in the variables in the script? I need to know their values. Simply referring to them as $MY_VAR1 doesn't work; ...
- 1,883
1
vote
2
answers
21k
views
export PATH permanently [duplicate]
I have exported the PATH but once I switch to a different terminal or reboot Debian, $PATH is reset. Here are the steps I take:
~$ vim scripts.sh
#!/bin/bash
echo "Hello"
I save it as mybash.sh and ...
- 11
4
votes
2
answers
2k
views
Is shell parent of all the processes in linux
I have been trying to understand shell scopes and environment in depth. I have been reading about how if
we do export VARIABLE=VALUE it will be available in subshell. So I wanted to ask a question I ...
- 141
6
votes
1
answer
20k
views
How to pass environment variables to a non-interactive shell (with example)?
In a sh script another sh script is started with su -l <user> -c /path/to/script.sh. As far as I understood script.sh will be run in a non-interactive shell. The official documentation tries to ...
- 2,232
3
votes
0
answers
238
views
tab-expansion and “./” bash shell [closed]
Maybe someone here would be able to help me out. Have installed Ubuntu 12.04 LTS (kubuntu) on two machines. The .bashrc and .bash_profile files are identical as the file structures on each machine is ...
- 31
2
votes
3
answers
1k
views
What is the difference between ./script and . ./script? [duplicate]
Possible Duplicate:
Using ‘.’ to execute files in bash
I was trying to figure out how to export my environmental via script instead of changing my .bashrc file.
I found this old useful post that ...
- 155
150
votes
11
answers
421k
views
Script to change current directory (cd, pwd)
I want to run a script to simply change the current working directory:
#!/bin/bash
cd web/www/project
But, after I run it, the current pwd remains unchanged! How can I do that?
- 1,603
13
votes
5
answers
11k
views
Last failed command in bash
The $? variable holds the exit status of last run command. Is there a variable that holds last run command itself?
- 1,516