Commands using cat | commandlinefu.com

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Terminal - Commands using cat - 411 results

echo `date +%m/%d/%y%X |awk '{print $1;}' `" => "` cat /proc/acpi/thermal_zone/THRM/temperature | awk '{print $2, $3;}'` >> datetmp.log

2009-08-24 21:26:29

User: ninadsp

Functions: awk cat echo

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log your PC's motherboard and CPU temperature along with the current date

Uses the data in the /proc system, provided by the acpid, to find out the CPU temperature. Can be run on systems without lm-sensors installed as well.

cat filename | tr '\n' '\0' | du -hsc ?files0-from=-

2009-08-21 18:36:49

User: Diluted

Functions: cat du tr

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Have a list of directories in a file, ending with newlines and need to run du on it?

du only accepts lines ending with a NUL, which can be a pain to create. This solves that issue.

Comments (1) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate

cat /proc/cpuinfo

2009-08-19 11:09:17

User: theIndianMaiden

Functions: cat

Tags: system_profiler

-2

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CPU model

Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate

cat filename | grep .

2009-08-09 01:00:59

User: fraktil

Functions: cat grep

Tags: cat Linux grep

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Remove newlines from output

Pipe any output to "grep ." and blank lines will not be printed.

Comments (1) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate

cat files.txt | xargs tar -cv | tar -x -c $DIR/

2009-08-06 22:55:21

User: lingo

Functions: cat tar xargs

Tags: copy tar directories files list

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Copy files from list with hierarchy

If you want certain files out of a directory hierarchy, this will copy just the listed files, but will create the directory hierarchy in the new location ($DIR/)

Comments (2) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate

sudo cat /usr/share/icons/*/*/* > /dev/dsp

2009-08-06 03:12:27

User: 12345678

Functions: cat sudo

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Play music from pure data

Plays the sound of the file, should sound like *some* kind of music, most files sound like static but some are really cool.

variations:

sudo cat /dev/sda > /dev/dsp sudo cat /dev/sda5 | aplay

Check out http://bbs.archlinux.org/viewtopic.php?id=70937 for more variations!

semi-dupe--like http://www.commandlinefu.com/commands/view/985/generate-white-noise but with different syntax and program.

cat /etc/debian_version

2009-08-05 14:47:05

User: caiosba

Functions: cat

-5

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Find out your Debian version

Easy way to find out what Debian version your machine is running

cat file-that-failed-to-download.zip | curl -C - http://www.somewhere.com/file-I-want-to-download.zip >successfully-downloaded.zip

2009-08-05 13:33:06

User: linuxrawkstar

Functions: cat

Tags: curl download resume

-1

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use curl to resume a failed download

If you are downloading a big file (or even a small one) and the connection breaks or times out, use this command in order to RESUME the download where it failed, instead of having to start downloading from the beginning. This is a real win for downloading debian ISO images over a buggy DSL modem.

Take the partially downloaded file and cat it into the STDIN of curl, as shown. Then use the "-C -" option followed by the URL of the file you were originally downloading.

cat frame/*.mpeg | ffmpeg -i $ID.mp3 -i - -f dvd -y track/$ID.mpg 2>/dev/null

2009-08-04 06:31:50

User: pamirian

Functions: cat

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concat multiple videos into one (and add an audio track)

This is an extract from a larger script which formats the video for DVD. The videos I use have no audio track so I need to add one. Tweak as you like...

Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate

find . -type f -name "*.c" -exec cat {} \; | wc -l

2009-07-30 10:06:51

User: foremire

Functions: cat find wc

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Make a statistic about the lines of code

use find to grep all .c files from the target directory, cat them into one stream, then piped to wc to count the lines

cat file | tee >> file

2009-07-30 07:34:03

User: GeckoDH

Functions: cat file tee

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append content of a file to itself

The command `cat file >> file` failes with the following error message:

cat: file: input file is output file

`tee` is a nice workaround without using any temporary files.

cat /proc/net/ip_conntrack | grep ESTABLISHED | grep -c -v ^#

2009-07-29 20:21:25

User: flamarion

Functions: cat grep

Tags: cat grep shell

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Count all conections estabilished on gateway

Comments (2) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate

for file in *.001; do NAME=`echo $file | cut -d. -f1,2`; cat "$NAME."[0-9][0-9][0-9] > "$NAME"; done

2009-07-29 10:04:26

User: jaymzcd

Functions: cat cut file

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Join a folder full of split files

If you use newsgroups then you'll have come across split files before. Joining together a whole batch of them can be a pain so this will do the whole folder in one.

buffer () { tty -s && return; tmp=$(mktemp); cat > "${tmp}"; if [ -n "$1" ] && ( ( [ -f "$1" ] && [ -w "$1" ] ) || ( ! [ -a "$1" ] && [ -w "$(dirname "$1")" ] ) ); then mv -f "${tmp}" "$1"; else echo "Can't write in \"$1\""; rm -f "${tmp}"; fi }

2009-07-27 20:21:15

User: Josay

Functions: cat echo mv rm tty

Tags: redirection

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Buffer in order to avoir mistakes with redirections that empty your files

A common mistake in Bash is to write command-line where there's command a reading a file and whose result is redirected to that file.

It can be easily avoided because of :

1) warnings "-bash: file.txt: cannot overwrite existing file"

2) options (often "-i") that let the command directly modify the file

but I like to have that small function that does the trick by waiting for the first command to end before trying to write into the file.

Lots of things could probably done in a better way, if you know one...

cat 1.mp3 2.mp3 > combined.mp3

2009-07-27 18:39:44

User: scottix

Functions: cat

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Combine two mp3's or more into 1 long mp3

This just combines multiple mp3's into one mp3 file. Basically it is a easy join for mp3's

Comments (6) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate

man -P cat ls > man_ls.txt

2009-07-27 13:09:24

User: alvinx

Functions: cat ls man

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save a manpage to plaintext file

Output manpage as plaintext using cat as pager: man -P cat commandname

And redirect its stdout into a file: man -P cat commandname > textfile.txt

Example: man -P cat ls > man_ls.txt

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cat /var/log/secure.log | awk '{print substr($0,0,12)}' | uniq -c | sort -nr | awk '{printf("\n%s ",$0) ; for (i = 0; i<$1 ; i++) {printf("*")};}'

2009-07-24 07:20:06

User: knassery

Functions: awk cat sort uniq

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Show me a histogram of the busiest minutes in a log file:

Busiest seconds:

cat /var/log/secure.log | awk '{print substr($0,0,15)}' | uniq -c | sort -nr | awk '{printf("\n%s ",$0) ; for (i = 0; i<$1 ; i++) {printf("*")};}'

cat `whereis mysqlbug | awk '{print $2}'` | grep 'CONFIGURE_LINE='

2009-07-21 07:44:27

User: numbata

Functions: awk cat grep

Tags: mysql

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Determine configure options used for MySQL binary builds

find . -name '*.html' -print0| xargs -0 -L1 cat |sed "s/[\"\<\>' \t;]/\n/g" |grep "http://" |sort -u

2009-07-14 07:00:15

User: jamespitt

Functions: cat find grep sed sort xargs

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find external links in all html files in a directory list

Just a handy way to get all the unique links from inside all the html files inside a directory. Can be handy on scripts etc.

cat /dev/urandom|awk 'BEGIN{"tput cuu1" | getline CursorUp; "tput clear" | getline Clear; printf Clear}{num+=1;printf CursorUp; print num}'

2009-07-13 07:30:51

User: axelabs

Functions: awk cat printf

Tags: nawk awk clear tput

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Watch number of lines being processed on a clear screen

awk can clear the screen while displaying output. This is a handy way of seeing how many lines a tail -f has hit or see how many files find has found. On solaris, you may have to use 'nawk' and your machine needs 'tput'

infile=$1 for i in $(cat $infile) do echo $i | tr "," "\n" | sort -n | tr "\n" "," | sed "s/,$//" echo done

2009-07-12 21:23:37

User: iframe

Functions: cat echo sed sort tr

Tags: cat bash sort sed tr

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Sorting by rows

Save the script as: sort_file

Usage: sort_file < sort_me.csv > out_file.csv

This script was originally posted by Admiral Beotch in LinuxQuestions.org on the Linux-Software forum.

I modified this script to make it more portable.

cat /dev/clipboard; $(somecommand) > /dev/clipboard

2009-07-10 18:48:21

User: sud0er

Functions: cat

Tags: windows cygwin

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Use Cygwin to talk to the Windows clipboard

I spent a bunch of time yesterday looking for the xsel package in Cygwin- turns out you can use the /dev/clipboard device to do the same thing.

cat <<.>> somefilename

2009-07-10 17:45:42

User: tomlouie

Functions: cat

Tags: text

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write text or append to a file

If you just want to write or append some text to a file without having to run a text editor, run this command. After running the command, start typing away. To exit, type . on a line by itself.

Replacing the >> with a single > will let you overwrite your file.

cat large.xml | xclip

2009-07-08 16:30:07

User: copremesis

Functions: cat

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cat large file to clipboard

avoid mouse abuse and the constant struggle of balancing scroll velocity ... not to mention that burning sensation in your upper right shoulder ....

Comments (3) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate

test `uname` = Linux && lsb_release -a || ( test `uname` = SunOS && cat /etc/release || uname -rms )

2009-07-07 20:51:30

User: virtualshock

Functions: cat test uname

Tags: distribution version

-7

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Display which distro is installed

Found in comments section works on most Linux flavors.

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