All Questions
60 questions
4
votes
1
answer
162
views
Run in background avoiding any job control message from the shell [duplicate]
Lets define a shell function (here the shell is Bash) and test it
$ s () { xterm -e sleep 5 & }
$ s
[1] 307926
$
[1]+ Done xterm -e sleep 5
$
With my specific meaning of ...
- 1,336
3
votes
1
answer
248
views
How to overload / customize bash (or any other shell) commands handler?
When in bash some non existing command is run, corresponding error message appears:
$ non-existent-command
non-existent-command: command not found
Is it possible to customize this behavior?
I would ...
- 279
1
vote
2
answers
119
views
Start interactive function definition from shell-script
Using zsh or bash, I want to run a script that may prompt the user for multiple commands and store them as a function, however I'm finding that eval "function $FNCNAME() {" or echo "...
- 31
0
votes
1
answer
163
views
How to create functions using for loops?
I'm trying to use a for loop to create functions for choosing passwords in my Arch install script (based on easy-arch) using the following code (which uses this se answer for repeating prompts and ...
- 31
5
votes
1
answer
2k
views
zsh: pass variable by reference, and modify its value (like bash's local -n namerefs)?
Is it possible to pass a variable to a zsh function, and modify its value without using eval? I came across a bash way to do that: local -n: https://stackoverflow.com/a/50281697
- 626
0
votes
1
answer
215
views
How to Control Number of Parameters Entered to Function
I am trying to make a simple menu-driven calculator script. I want there to be an error message displayed whenever the user does not enter the correct parameters when they call the add() or subtract() ...
2
votes
0
answers
753
views
Is valid use 'source' within a function?
Like an introduction: if secondary.sh has
functionX(){
...
}
and primary.sh has - source secondary.sh declared - and its own functions, therefore:
# primary.sh content
source secondary.sh
...
- 2,040
2
votes
0
answers
125
views
Why `declare -p VAR` returns "declare -- VAR" on an unset local variable but gives an error "bash: declare: A: not found" on an unset global variable?
I don't understand:
$ declare -i VAR=0; \
> echo "$A"; \
> fun() { local -i VAR=1; echo {; echo "$VAR"; declare -p VAR; unset VAR; echo "$VAR"; declare -p VAR; echo ...
- 270
0
votes
1
answer
105
views
Copy files from multiple directories and paste it into multiple directories
I have a directory " /data/archive
In this directory there are 8 different subdirectories.
eg : /data/archive/a
/data/archive/b and so on
Files under these subdirectories have date appended to ...
- 93
0
votes
1
answer
2k
views
How to call .bashrc function in script
~/.bashrc
----
example()
{
echo "example function"
}
If I use this in a shell script
#!/bin/sh
example
I get command not found.
I have tried
#!/bin/sh
source ~/.bashrc
example
but ...
- 777
1
vote
1
answer
3k
views
Passing a variable from one function to another in bash script
Iam new to linux and trying to pass a variable from one function to another in a same bash script.
Below is my code:
#!/bin/bash -x
FILES=$(mktemp)
FILESIZE=$(mktemp)
command_to_get_files(){
aws ...
- 95
2
votes
3
answers
364
views
Why does a file move/copy function only move one file at a time when using the “*” wildcard?
function mv1 { mv -n "$1" "targetdir" -v |wc -l ;}
mv1 *.png
It does only move the first .png file it finds, not all of them.
How can I make the command apply to all files that match the wildcards?
- 1,710
1
vote
2
answers
1k
views
Accessing function documentation
Is there a way to access docstrings in Bash? How does one include a docstring in a function's definition in Bash?
More specifically how do I add and access docstrings to the following function?
...
- 35
1
vote
2
answers
7k
views
sudo without sudo, implying sudo in script
I made some scripts containing some functions which by design needs sudo permission. I have added those path in .bashrc for Linux and .bash_profile for MacOS so that it can be called from anywhere.
...
- 650
0
votes
1
answer
174
views
Can an array be the first argument to a function? [duplicate]
I have a function that one of the arguments is an string that has space separated words.
E.g. "foo bar ccc"
I think this kind of string can be treated as an "array" and loop over each word.
My ...
- 1,459