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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20 views

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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24 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 <...
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27 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 ...
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1answer
22 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 ...
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13 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 ...
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1answer
39 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 ...
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1answer
117 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 ...
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2answers
258 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 ...
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670 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 ...
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89 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: $ ...
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Xargs in Windows - either wrongly written or doesn't exist

Using Cygwin i installed cUrl on Windows10 and want to get some status codes from an url list with xargs curl -sw "%{url_effective}\t %{http_code}\t %{redirect_url}\\n" < C:\Users\me\Desktop\urls....
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429 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 ...
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2answers
190 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}' | ...
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43 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 :(?
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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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1answer
3k views

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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1answer
900 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 ...
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1answer
110 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 ...
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1answer
65 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 ...
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3answers
271 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 ...
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1answer
1k views

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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698 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 ...
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36 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,...
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1answer
223 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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232 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 ...
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194 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....
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806 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....
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1answer
4k 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 ...
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2answers
477 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 ...
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2answers
2k 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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1k 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 '\{' | ...
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1k views

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 ...
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1answer
801 views

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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1answer
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 ...
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51 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 ...
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1answer
120 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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1answer
87 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 ...
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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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387 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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1answer
625 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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2answers
1k views

Search for string inside pdf with pdfgrep and outputs only file name

I'm using pdfgrep to search for a name inside a pdf: pdfgrep -H 'Fatima Alves' RE/* This commands will output the file name and the name: RE/2011-01-RE_60822079000168_23022016_153923(1).PDF: Fatima ...
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3answers
818 views

How to use xargs and sed to pipe results to an array?

I'm pulling JSON from a REST endpoint using curl and then parsing it using the node package json to get at some of the JSON attributes, which I use later in some app configurations. curl -s http://52....
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1answer
510 views

xargs misinterprets backslashes on windows

I am using gnuwin32 utilities on windows 7. I want to pipe a file list to xargs to remove the files. but if i pipe normal windows paths in then xargs interprets and removes the backslashes dir /B /...
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1answer
468 views

why doesn't `find . -name '*.jar' | xargs jar tf` work?

I ran this find . -name '*.jar' | xargs jar tf hoping it would, find all the .jar files and execute jar tf on them (to view the content). But it didn't seem to work!!!
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2answers
635 views

Pass all *.txt files to a Python script in parallel

I have a Python script that takes a .txt file and does something with it. I need a Linux shell command that will search for .txt files throughout the system and pass the .txt files to my Python script....
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1answer
1k views

Delete files if condition is met

I have the following directory tree: /Directories/ /Directories/somedir/somefile.mkv /Directories/somefile.rar I'm trying to find a way to delete the .rar file if the .mkv file exists and is larger ...
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1answer
251 views

What does xargs do exactly in this case?

I recently came across the following two examples Example 1: List only directories ls -l | grep "^d" Example 2: Search inside files ls | xargs grep -i "Find Some String" Now i have read from ...
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2answers
1k views

execute a command for each line of stdin immediately?

How do I execute a command for each line of stdin immediately? Example: (echo abc; sleep 10; echo def;) | ??? The xargs tool does not do the job because it blocks until it sees all the data (waits ...
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2answers
64 views

xargs; How & When?

What exactly is xargs? How do you use it? When would it be considered pragmatic, or otherwise appropriate to do so?
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2answers
621 views

Retrying failed command that is run with xargs

I have a script that rsync's files over in parallel using xargs and rsync daemon mode. I occasionally get errors with rsync due to writes happening on the source. I want to be able to retry the rsync ...