All Questions
32
questions
3
votes
1
answer
247
views
tcsh: Handle spaces in arguments when passing on to another command
I wrote a script that needs to call a command and pass on arguments. My script has its own parameters but some need to be passed through. This fails when arguments to my script have spaces in them.
...
- 8,924
0
votes
2
answers
884
views
How to properly parse a quoted arg-list string in a shell script?
Summary
How to convert a single string a "b" 'c d' $'e\nf' into separate arguments, respecting quotes and preserving whitespaces and newlines?
Question
I'm trying to read and process the ...
- 101
5
votes
3
answers
1k
views
Find exec sh: Shell variable not getting passed to subshell
Here is a simplified code that prints the name of Directory if it contains a Filename with same name as the parent directory and .md extension.
FIND(){
find . -type d -exec sh -c '
for d ...
- 2,056
1
vote
1
answer
616
views
problem escaping quotes in script
I'm constructing a command line for use with the 'mogrify' tool [part of imagemagick]. the finalised command line looks something like this :
mogrify -stroke yellow -draw 'line 0,0 0,319' -draw 'line ...
- 113
0
votes
1
answer
542
views
Why do these rsync filter args fail in bash when passed in array?
Why does this rsync command work when I give it literally but not when I create it from variables?
Here are the variables - first the options I'm passing to rysnc, as an array:
$ echo "${options[@]}"...
- 213
0
votes
1
answer
45
views
Script Integer getting prefixed with "
I am running a jar file using a very basic shell script (I literally just need this to run on startup of a NAS). However, I am getting some rather unexpected behavior:
Script looks like this:
java -...
4
votes
4
answers
3k
views
Correctly quote array that is being passed indirectly via another command
I need to pass an array of filenames to a command, preserving proper quoting. So far, so good. Unfortunately the command is actually a sub-command that is, in turn, invoked by another command. ...
- 3,789
2
votes
1
answer
81
views
Generating quoted command arguments
I'm working with a HTTP API that demands a very particular set of signed headers + JSON body. And I really want to cURL it for debugging and sanity in general.
So, I've written a small script that, ...
- 123
2
votes
2
answers
1k
views
Keeping quotes passed to a perl wrapper script
I'm writing a small perl wrapper to setup environment variables, etc., then invoke a command by the same name.
./foo.pl -a one -b two -c "1 2 3" -d done
When I output @ARGV, the "" around 1 2 3 have ...
- 23
0
votes
2
answers
126
views
Bash : Give builded array to function as a list of argument?
I have this issue with borgbackup, but because the reaction is the same, I will use rsync in my example.
I want to build an array of arguments by adding a prefix to each, and then give that array to ...
- 25
2
votes
0
answers
85
views
Bash: Special variables $@ vs. $* in For Loop [duplicate]
Using $@ instead of $* would preserve quoting. Consider the following script:
#!/bin/bash
# Test.sh
for arg in $@
do
echo "I found the argument $arg"
done
./Test.sh "One Two Three"
I reach the ...
- 527
3
votes
1
answer
6k
views
Passing arguments with spaces and quotes to a script (without quoting everything)
The following works great on the command-line:
$ ffmpeg -i input.m4a -metadata 'title=Spaces and $pecial char'\''s' output.m4a
How do I parameterize this command and use it in a script/function? I ...
- 173
1
vote
1
answer
824
views
How to pipe netcat's output? Problems with xargs and quotes
I'm trying to pipe whatever nc receives with this:
nc -l 20000 | xargs /root/test
...and it works fine, except when xargs receives quoted arguments - it splits them as if they were separate...
...
- 181
5
votes
2
answers
2k
views
How to re-write this function to avoid argument injection
I have a function in my .bashrc file that allows me to run a script on a remote server with arguments via ssh.
Currently, the function contains:
function runMyScript {
if [ $1 = "s3" ]
then
...
- 153
9
votes
4
answers
3k
views
Can a shell script prints its argument, quoted as you would write them on the shell prompt?
In a shell script, my understanding is that "$@" expands to the script arguments, quoting them as needed. For instance this forwards the script arguments to gcc:
gcc -fPIC "$@"
When using the bash ...
- 275
2
votes
1
answer
4k
views
Passing a git command as an argument
I'm trying to automate some tedious parts of a student job I'm working on.
Basically, the goal is to clone a bunch of git repositories (which I already have working), then run the same git checkout ...
0
votes
2
answers
498
views
bash script function argument problem [duplicate]
Not sure why this is producing error. This is a test code emulating my real code. I want to write a wrapper for find and want to allow for any argument, so I'm wrapping each arg in single quotes.
#...
- 207
3
votes
2
answers
10k
views
Passing paths with spaces as arguments
I am having difficulty in passing some string variables having spaces in them as arguments to a program.
For debugging and showing the arguments being passed, I created a demo Python script -:
#####...
21
votes
3
answers
16k
views
How does 'find -exec' pass file names with spaces?
If I have a directory containing some files whose names have spaces, e.g.
$ ls -1 dir1
file 1
file 2
file 3
I can successfully copy all of them to another directory like this:
$ find dir1 -mindepth ...
- 4,087
1
vote
2
answers
2k
views
UNC Argument in bash scipt
I want to create a bash script with a "pure" UNC (i.e. I do not want to escape the backslashes literally) as an argument, i.e. something like:
./foo \\my\share\is\here
However, as is natural, the ...
- 411
1
vote
2
answers
578
views
Can't use argument in bash date calculation script
The following bash script won't work. I need to calculate the date depending on the number of days since 14th Oct 1582, where the argument will be the number of days.
d="$1"
date -d '14 Oct 1582 + "$...
18
votes
2
answers
12k
views
Bash string concatenation used to build parameter list
Given this piece of bash:
PARMS='-rvu'
PARMS+=" --delete --exclude='.git'"
echo $PARMS
rsync ${PARMS} . ${TARGET}
The echo shows the PARMS string as expected, no error is displayed, but rsync ...
- 375
52
votes
3
answers
75k
views
Add arguments to 'bash -c'
Let's say that I want to run a command through Bash like this:
/bin/bash -c "ls -l"
According to Bash man page, I could also run it like this:
# don't process arguments after this one
...
- 655
1
vote
1
answer
483
views
How to enclose a quoted variable in quotes
I want to call: ./mjpg_streamer -i "./input_uvc.so -r 320x240" -o "./output_http.so -w ./www" from a C program, running system().
The problem is that I have to enclose shell command in quotes, which ...
- 725
1
vote
1
answer
2k
views
Bash Script : Passing a variable to a bash script that contains quotes, single quotes. etc [closed]
lets assume this is the string:
'a',"b"
it contains both single and double quotes.
how would you pass this to a bash script as a single string ?
this is the bash script:
#!/bin/bash
echo $1
...
- 333
3
votes
2
answers
531
views
Command substitution interpreting spaces within quotes as argument separators
I'd like an alias that additionally appends itself to ~/.bashrc, e.g.
function tailias
{
$(echo "alias $1='${*:2}'" | tee -a ~/.bashrc)
}
I'm using tee to split the command to ~/.bashrc while ...
- 673
0
votes
2
answers
3k
views
Making md5sum understand file names with spaces
I need to use md5sum in Python by using pipe to calculate checksum for a bunch of .mp3 files... is there a command which ignore whitespaces in filenames on the command line of md5sum program?
For ...
- 103
14
votes
4
answers
19k
views
How to prevent command injection through command options?
I have an wrapper application where I need to let the user specify custom options to pass to a simulator. However, I want to make sure the user doesn't inject other commands through the user options. ...
- 409
12
votes
2
answers
23k
views
Pass arguments to function exactly as-is
I have the following function:
bar() { echo $1:$2; }
I am calling this function from another function, foo. foo itself is called as follows:
foo "This is" a test
I want to get the ...
- 3,789
7
votes
3
answers
2k
views
Bash : command line with optional arguments
I'm running this kind of code:
#!/usr/bin/env bash
set -u
exclude1='--exclude=/path/*'
exclude2='--exclude=/path with spaces/*'
exclude3='' # any 'exclude' can be empty
tar -czf backup.tgz "$...
- 1,148
5
votes
2
answers
4k
views
Bash: passing braces as arguments to bash function
I love using the following pattern for searching in files:
grep --color=auto -iRnHr --include={*.js,*.html,} --exclude-dir={release,dev,} "span" .
I'd like, however, to have this one wrapped into a ...
- 383
148
votes
11
answers
55k
views
What is the difference between $* and $@?
Consider the following code:
foo () {
echo $*
}
bar () {
echo $@
}
foo 1 2 3 4
bar 1 2 3 4
It outputs:
1 2 3 4
1 2 3 4
I am using Ksh88, but I am interested in other common ...
- 20.1k