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

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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 ...
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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 ...
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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 (...
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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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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 ...
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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 ...
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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 ...
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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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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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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 ...
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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 ...
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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 \ -...
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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 <...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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: $ ...
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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 ...
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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}' | ...
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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 :(?
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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 ...
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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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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 ...
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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 ...
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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 ...
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3 answers
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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 ...
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3 votes
1 answer
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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 ...
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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 ...
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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,...
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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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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 ...
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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....
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3 answers
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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....
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4 votes
1 answer
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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 ...
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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 ...
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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 $...
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2 answers
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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 '\{' | ...
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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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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.
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1 answer
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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 ...
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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 ...
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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 ...
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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 ...
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11 votes
4 answers
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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%...
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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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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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