Linked Questions
168 questions linked to/from How can we run a command stored in a variable?
9
votes
1
answer
5k
views
Is there a way to expand a variable into multiple arguments without globbing in bash? [duplicate]
I would like to define an expression for find which includes a wildcard in a -name subexpression:
find_expression="-type f -name *.csv -mtime +14"
And then use it in a couple of places ...
- 1,058
2
votes
2
answers
9k
views
Concatenate strings in bash while adding double quotes [duplicate]
I have the following bash script:
set -ex
X="bash -c"
Y="ls -al"
I want to execute (notice the double quotes):
bash -c "ls -al"
The following does not work:
C=$X\ $Y
$C
This gives as output
+ X='...
- 479
1
vote
2
answers
2k
views
bash: [: missing `]' when the test stored in variable [duplicate]
Why this works:
[ -r /tmp ] && echo "tt" >/tmp/taa
cat taa
tt
But the following doesn't and how to fix that, preserving variable for reusability?
COMD='[ -r /tmp ] && echo "tt"'
$...
- 143
0
votes
1
answer
5k
views
curl inside bash function giving "option unknown" for --data [duplicate]
I'm trying to pass --data-raw options to a curl inside bash function, but I get option unknown error.
function api_call () {
local data="$5"
echo $(curl -L -X $1 "https://...
- 1
2
votes
2
answers
2k
views
Removing single quotes from double-quoted variable element in array and run a command [duplicate]
I have a script where I dinamically change the arguments which must be passed to a command (mkvpropedit in this case). Consider the example script below:
#!/bin/bash
LANG_NAME="eng lish"
...
- 177
3
votes
1
answer
3k
views
Proper quote escaping/preserving in bash function [duplicate]
The following command with 2 parameters does what I need if I enter it in a terminal:
mycommand 'string that includes many spaces and double quotes' 'another string that includes many spaces and ...
- 31
1
vote
2
answers
2k
views
Combine two command defined as String in variable and run as one [duplicate]
Can I join two commands defined as String and run as one. E.g.
var="ls -alt"
var2="| grep usersfile"
var3="| grep usersfolder"
Following example for joining commands does not work.
a. '{$var & $...
- 153
0
votes
1
answer
1k
views
Construction an a command line bash script with spaces in path names [duplicate]
I need a simple script to call gcc but I've got a long list of libraries that I need to pass to it in a directory who's path has a space on it.
In place of gcc for testing my script I've used:
#!/...
- 101
1
vote
2
answers
984
views
Escaping spaces in dash [duplicate]
I want to do something like this.
$ touch a\ b
$ cmd=cat\ a\ b
$ echo $cmd
cat a b
$cmd
cat: a: No such file or directory
cat: b: No such file or directory
There are problems with the spaces in the ...
- 15
3
votes
1
answer
427
views
Problem with single quote in Bash [duplicate]
I have a sh script for initializing dzen2, and I want to use Source Code Pro font to use there. Here's the code...
param="-p -dock -fn 'Source Code Pro-10'"
# the generated_output function ...
- 137
0
votes
1
answer
2k
views
Prevent splitting command line argument at spaces when running in bash script [duplicate]
I'm trying to run a command in a bash variable, like this:
cmd="python -m mymodule 'argument 123 456' argument2=32 argument3=234"
$cmd
It looks like it is splitting the command line ...
- 101
1
vote
1
answer
2k
views
Multiple commands in variable? [duplicate]
Is it possible to execute multiple commands stored in a variable?
Singe command works fine
variable="echo HELLO"
$variable
HELLO
I would like to have something like this
variable="echo ...
user542537
1
vote
1
answer
317
views
rsync pass multiple exclude from $@ [duplicate]
I'm trying to make a wrapper around my rsync command to reuse code. I need to pass the source folder, the target folder and then any number of excluded directories. Here is what I have with the logs; ...
0
votes
2
answers
653
views
Passing options to any linux programs from variables [duplicate]
Desired code:
echo "$var" | sort -t/ -k 1,1n -k2,2n -k3,3n
Case scenario: options to sort arr dynamically created based on condition and stored in variables. How can i pass them.
option='-...
user414574
0
votes
1
answer
682
views
Trying to use sed within eval statement? [duplicate]
Trying to use sed within eval statement?
#!/bin/bash
declare COMMAND="sudo sed -i 's/PermitRootLogin prohibit-password/PermitRootLogin yes/g' /etc/ssh/sshd_config"
theResponse=$(${COMMAND} 2&...
