Questions tagged [xargs]
utility in Unix-like operating systems for passing large numbers of arguments to programs that can only take a small number of arguments
178
questions
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17
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Why is xargs unable to call basename properly in a subshell?
I ran into the following problem:
user@machine:/$ echo ./dir/fil | xargs -I {} bash -c "echo $(basename {})"
./dir/fil
Why is it not just printing fil?
So basename seems to get the expected ...
- 103
0
votes
1
answer
497
views
Using jq with xargs
I have a json-file with n users. I need to replace the id-field with a different UUID for each user. After that, I need to make n curl calls with the json as payload. How can I achieve this?
My json ...
- 3
0
votes
2
answers
39
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Find files in git that have entry in .editorconfig
I want to find all of the files in git that have some extensions. The list of extensions is generated from my .editorconfig file.
Say I have a list of file extensions such as:
.css
.html
.java
.js
(...
0
votes
1
answer
30
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Why does `xargs` not work with `echo` but work with `ls`?
root@home:~$ ls
root@home:~$ echo abc > z1
root@home:~$ echo xyz > z2
root@home:~$ ls
z1 z2
root@home:~$ ls | xargs -I{} cat {}
abc
xyz
root@home:~$ echo z1 z2 | xargs -I{} cat {}
cat: 'z1 z2': ...
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0
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1
answer
46
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grep for lines in shell script, send to xargs with $1 set
I have a shell script (I use GNU bash 4.4.20 on Ubuntu 18.04) with a list of commands I often run, e.g.:
sudo program1 $1 foo arg1
sudo program2 $1 foo arg2
sudo program1 $1 bar arg3
sudo program2 $1 ...
- 473
1
vote
2
answers
113
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Generalized chmod function differentiating between directories and files (i.e.: with find)
Is there a generalized bash function available that mimics chmod in every aspect, except that it also let's me differentiate between files and directories?
I know there's already numerous examples ...
- 326
2
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1
answer
289
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How to batch delete the redis keys from local machine and through a jump machine inside kubernetes cluster?
I need to delete some keys in my redis cluster which can only be accessed from a jump machine deployed in the kubernetes cluster.
So if I know the key I can delete it by the following command without ...
- 167
0
votes
1
answer
75
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awk multiple commands and multiple args
I'm trying to turn this output:
❯ hg branches -T'{node} {branch}\n'
4b0826975cb29da26a6dd13f463241463c43c6a7 maria
5c31751cdb774f8b6337b6f64232b15903530997 default
Into these commands:
hg bookmark -r ...
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0
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2
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102
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xargs how to string commands together
Hey guys im a newbie scripter with no formal training in programming so apologies in advance for the messy code.
What I want to accomplish:
This what directories look like.
/home/AAA
/home/BBB
/...
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2
votes
1
answer
2k
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xargs and git issues in windows powershell
I've been using the following command to delete any merged git branches:
git branch --merged | grep -v "\*" | grep -v "master" | grep -v "staging" | xargs -n 1 git branch ...
- 21
1
vote
3
answers
1k
views
Why does xargs split on spaces even with -0?
According to the docs and advises on the internet, any of these:
$ ls $(env -0 | xargs -0)
$ ls $(env | xargs -d '\n')
given LESSOPEN is | %s _=/usr/bin/env should produce this:
...
ls: cannot access ...
- 185
0
votes
2
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125
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Symlinking with (i.e.) find | sed | xargs without xargs: argument line too long
I got stuck at symlinking using find, xargs and sed.
Given folder structure:
/abc
/def
/*/def
/builds
on my local machine the following statement works.
find ./abc \
-type d \
-...
- 109
0
votes
1
answer
95
views
How to exit less follow mode without exiting less when xargs is used?
ls -rt *.log | tail -1 | xargs less +GF
I use this command to tail -f my logs, but when I ctrl+c to exit follow mode, it quits less too.
I think it is caused by xargs, because if you just less <...
- 221
1
vote
2
answers
425
views
Accessing parent and grandparent directory from linux find and passing to xargs
I'm trying to do a batch imagemagick conversion on all tiffs in directories.
The structure of the directories looks like:
test
123
456
image.tif
256
857
...
- 123
1
vote
1
answer
180
views
xargs run bash script with threads (2 arguments)
I have a file in the following format:
"192.168.2.1" "80"
"172.16.1.1" "443"
"10.1.1.1" "8080"
which contains multiple local IPs and i'm trying to run a script with threads using xargs to execute ...
- 21
0
votes
1
answer
75
views
Why does xargs with cp fail for recursion?
I am trying to copy files from one directory into a whole collection of other directories, such that the set of files in the source directory will be present in every one of the destination ...
- 656
1
vote
1
answer
702
views
delete several permanent entries from arp table by command line
I am trying to remove the permanent entries from my arp table. but the following command only removes those that are not permanent
ip -s -s neigh flush all
With the arp utility I was able to ...
- 609
2
votes
1
answer
175
views
Why does `echo | xargs > >(cat)` hang on my Mac?
This is reproducible in zsh and bash.
Confusing me further, echo | ( xargs; : ) > >(cat) does not hang. This is also reproducible in zsh and bash.
If I use GNU's xargs as provided by brew ...
- 51
2
votes
2
answers
3k
views
Bash Script to delete oldest files but keep latest files including sub-directories
I'm trying to delete old files but should keep latest 3 days log files.i tried below command,
ls -tr /home/httpd/htdocs/pathname/pathname/config//build/logs/apps/.log | tail -n +4 | xargs rm --
but ...
1
vote
2
answers
682
views
Similar commands with find are not outputting the same
I'm trying to run a find command on a directory which contains unit files:
find /home/pi/units -type f -name "*.service"
which returns
/home/pi/units/manager.service
I then want to pipe that ...
- 13
1
vote
1
answer
150
views
In "find ... | xargs ...", why does xargs iterate even when find returns zero results?
I recently had a find ... | xargs ... use case that surprised me. The issue involves the case where find returns no matches.
Testing on two systems, I found that one behaves as I would expect:
$ ...
- 759
6
votes
1
answer
642
views
Using xargs with pdftk
I am using the following code to concatenate all the pdf files in the current directory:
find . -iname '*.pdf'|sort|xargs|xargs -I {} pdftk {} cat output union.pdf
The first invocation of xargs has ...
- 135
2
votes
2
answers
359
views
Use tmux attach with xargs
I'd like to create an alias that lets me browse all of my tmux windows with FZF and then attach that single window. What I have so far:
tmux list-windows -t main -F '#{session_name}:#{window_name}' | ...
- 155
0
votes
1
answer
51
views
Find and rename first result in linux?
I have try using this commanline.
find *.txt | head -1 | xargs -0 mv *.txt test.txt
i receive.
mv: target ‘02.txt\n’ is not a directory
What wrong :(?
- 13
1
vote
2
answers
3k
views
How to get line number in xargs?
I want to upload some files to machines in parallel. There's a list of hosts and a list of files that should be uploaded by index: 1.txt goes to hostOne, 2.txt goes to hostTwo etc. Here's what I try ...
- 1,716
2
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1
answer
5k
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using xargs pass arguments to sub shell with pipe
I want to rename a number of files. I think I can use xargs to do it.
find ./ -name "upload.log-*"
./upload.log-20180622.gz-20180624.gz-20180626.gz
./upload.log-20180624.gz-20180626.gz
./upload.log-...
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0
votes
1
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1k
views
Pass command output as argument in grep
I want to compare two text files for changes line by line. If the files are store locally I know I can do it with
grep -Fxvf file1 file2
I have a problem because file 2 is in Hadoop File System. I ...
- 111
0
votes
1
answer
127
views
Replacing a line in multiple files
I have a list of files and corresponding line numbers where I want to perform the substitution:
s/LOG.error/LOG.warn
There are other places where this might occur and don't want to disturb those ...
- 223
1
vote
1
answer
194
views
How to move the folders to new directory based on their match in csv file?
In my present directory I have many folders like F1, F2, F3, F4, F5, F6, F7, F8, F9, F10.
I have a csv file "dan.csv" in the present directory which has a column with folder names.
csv file looks ...
- 183
3
votes
3
answers
966
views
How to pipe a single item from a command output into another command?
Basic example using grep (note that grep would not be my only use-case for this):
$ grep -Irl "foo"
path/to/directory/help.js
path/to/directory/config.js
path/to/directory/task.js
Now I want to open ...
- 133
3
votes
1
answer
2k
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Specify a list of files as input into pdftk
I have a list of files that I need to specify as input to pdftk so it will concatenate them in the order specified. I don't see an input file list as an option in the pdftk man page, but perhaps ...
- 133
0
votes
2
answers
870
views
Find get the files I want,the pipe to xargs and Tar don't
I'm using the following command line:
find . -mtime -15 -mtime 0 -print0 | xargs -0 tar cjvf /home/user/adjuntos.tar.bz2
The left side of the pipe works like a charm, but the right side of the ...
- 21
0
votes
2
answers
40
views
find a file and send some text to it
I would like to find a file in folder /opt and send some text to it. I tried the following syntax:
sudo find /opt -name filename-*.conf | xargs -I '{}' echo "text_to_send" > '{}' \;
Unfortunately,...
- 121
1
vote
1
answer
356
views
What does this do? `Find ... -type d|xargs chmod 770`
What does these two lines do?
find /backup/folder -type d|xargs chmod 770
find /backup/folder -type f|xargs chmod 660
I googled around, but can't figure out what d|xargs and f|xargs does.
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0
votes
2
answers
267
views
Cannot make xargs construct to work
I have a strange problem with xargs.
I have an xargs construct which does not work, even though
when I echo the command, it works perfectly.
My one liner is the following:
exiftool -p ...
- 103
0
votes
1
answer
212
views
ssh into a machine and search for process, kill using xargs
I am doing this,
guastest@iridium06.psc ~> ssh <machine> jps | gawk '$2 == "<process>" {print $1}' | xargs kill
kill: sending signal to 75797 failed: No such process
guastest@iridium06....
4
votes
3
answers
1k
views
Add text to list of files
I'm trying to use xargs to manipulate a set of files.
A file called filelist.txt contain the file names
john
paul
george
ringo
steve
I can create all these files with this command:
cat filelist....
- 67
4
votes
1
answer
7k
views
xargs on windows: No such file or directory
I wanted to resync the tags on my local git repository with the ones on our remote server, using this answer provided on StackOverflow:
git tag -l | xargs git tag -d
git fetch --tags
I've got git ...
- 185
0
votes
2
answers
657
views
oldest to newest file in directory tree and delete each file interactively
In the step 1, I am trying 'find' the oldest file in directory tree, which I solved by following this question.
Now I want to use xargs to delete interactively from oldest to newest.
Since this ...
- 111
3
votes
2
answers
3k
views
Multiple read from a txt file in bash (parallel processing )
Here is a simple bash script for HTTP status code
while read url
do
urlstatus=$(curl -o /dev/null --silent --head --write-out '%{http_code}' "${url}" --max-time 5 )
echo "$url $...
- 45
1
vote
2
answers
2k
views
Piped xargs doesn't execute the command
I want to monitor nginx access.log for malformed requests and notify myself about such cases.
To do this i have written following command:
tail -n0 -f access.log | grep --line-buffered '\{' | ...
- 33
0
votes
1
answer
2k
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Use xargs on file or content that contains quotes/single quotes
I am having difficulty using xargs with files with ', is there a way to by pass this problem?
$ find . | xargs -I FILE echo FILE
xargs: unterminated quote
file name
$ ls
mike's sample 16
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1
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1k
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How to generate a list of URLs in bash?
How can I generate a list of URLs in bash so that I can pipe them to xargs and then to curl?
http://somewebsite.com/{}.file
where {} is a number.
- 21
1
vote
1
answer
2k
views
How to launch multiple urls per process with cURL?
I am trying to download a list of URLs with cURL with multiple URLs per process. The following works but it returns a weird result if the xargs -L parameter is more than 1. I want to launch 8 ...
- 21
1
vote
0
answers
57
views
Summing selective du sizes output
I am trying to find out how much space is consumed in total by files exceeding 50M in size. I am able to generate a list of file sizes with the following command:
find $PWD/soccer -maxdepth 50 -type ...
- 1,225
1
vote
1
answer
176
views
How to rename multiple file name include subfolders?
For example i have the following files:
./dirA/fileA.png
./dirA/fileB.png
./dirA/fileC.png
./dirB/fileD.png
./dirB/fileE.png
./dirB/dirC/fileF.png
Is there any one line command or script to rename ...
- 123
1
vote
1
answer
96
views
How to pass console input to xargs
I am trying to pass a file name as an argument to wc -l through xargs.
Below is the command I tried:
cat > xargs wc -l
I am getting below error
cat: invalid option -- 'l'
Try 'cat --help' for ...
- 209
11
votes
4
answers
10k
views
Xargs pass input to command that contains a pipe
As a vehicle to understand how to manipulate binding precedence with pipes, I'm trying to print the path of one file per directory - for every directory:
find $PWD -type d | xargs --delimiter "\n" -I%...
- 1,225
1
vote
1
answer
427
views
bash xargs: same command gives different output
When I run
ls -1 *.a | xargs -I{} echo {} | sed 's/.a//'
The output is
1
2
3
When I run
ls -1 *.a | xargs -I{} bash -c "echo {} $(echo {} | sed 's/.a//')"
and the output is
1.a 1.a
2.a 2.a
3.a ...
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1
vote
1
answer
677
views
xargs with two command - mkdir and sed
I want to create catalogs and in the same line I want to change path and save it in the output file
I don't want to repeat code, so I tried:
cut -d ';' -f 1 tmp1 | tr '.' '/' | xargs -I % bash -c '...
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