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
168
questions
0
votes
1answer
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 \
-...
0
votes
0answers
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 <...
1
vote
2answers
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
...
1
vote
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 ...
0
votes
1answer
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 ...
1
vote
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 ...
2
votes
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 ...
2
votes
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 ...
1
vote
2answers
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 ...
0
votes
1answer
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:
$ ...
0
votes
0answers
40 views
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....
6
votes
1answer
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 ...
2
votes
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}' | ...
0
votes
1answer
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 :(?
0
votes
2answers
2k 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
vote
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-...
0
votes
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 ...
0
votes
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 ...
1
vote
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 ...
3
votes
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 ...
2
votes
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 ...
0
votes
2answers
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 ...
0
votes
2answers
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,...
1
vote
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.
0
votes
2answers
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 ...
0
votes
1answer
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 $1}' | xargs kill
kill: sending signal to 75797 failed: No such process
guastest@iridium06....
4
votes
3answers
806 views
Add text to list of files
I'm trying to use xargs to manipulate a set of files.
A file called filelist.txt contain the file names
john
paul
george
ringo
steve
I can create all these files with this command:
cat filelist....
4
votes
1answer
4k views
xargs on windows: No such file or directory
I wanted to resync the tags on my local git repository with the ones on our remote server, using this answer provided on StackOverflow:
git tag -l | xargs git tag -d
git fetch --tags
I've got git ...
0
votes
2answers
477 views
oldest to newest file in directory tree and delete each file interactively
In the step 1, I am trying 'find' the oldest file in directory tree, which I solved by following this question.
Now I want to use xargs to delete interactively from oldest to newest.
Since this ...
3
votes
2answers
2k views
Multiple read from a txt file in bash (parallel processing )
Here is a simple bash script for HTTP status code
while read url
do
urlstatus=$(curl -o /dev/null --silent --head --write-out '%{http_code}' "${url}" --max-time 5 )
echo "$url $...
1
vote
2answers
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 '\{' | ...
0
votes
1answer
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 ...
0
votes
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.
1
vote
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 ...
1
vote
0answers
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 ...
1
vote
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 ...
1
vote
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 ...
6
votes
4answers
6k 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
vote
1answer
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 ...
1
vote
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 '...
-2
votes
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 ...
2
votes
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....
1
vote
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 /...
3
votes
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!!!
1
vote
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....
0
votes
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 ...
0
votes
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 ...
3
votes
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 ...
1
vote
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?
2
votes
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 ...
