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Commands using cat

Commands using cat from sorted by
Terminal - Commands using cat - 380 results
watch -n 1 cat /proc/net/wireless
2012-06-07 10:38:21
User: cantormath
Functions: cat watch
Tags: status cat watch wireless signals wifi
-3
Up
Down
Displaying wireless signal on screen in realtime.

Values will depend on the driver and the hardware specifics, so you need to refer to your driver documentation for proper interpretation of those values.

Show sample output | Comments (1) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
cat urls.txt | wget -i- -T 10 -t 3 --waitretry 1
2012-05-14 06:41:14
User: kev
Functions: cat wget
Tags: wget
1
Up
Down
download a list of urls
Comments (2) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
cat urls.txt | xargs -n1 curl -O --max-time 10 --retry 3 --retry-delay 1
2012-05-14 06:38:06
User: kev
Functions: cat xargs
Tags: curl
-2
Up
Down
download a list of urls
Comments (1) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
cat /var/log/nginx/access.log | grep -oe '^[0-9.]\+' | perl -ne 'system("geoiplookup $_")' | grep -v found | grep -oe ', [A-Za-z ]\+$' | sort | uniq -c | sort -n
2012-05-08 13:28:25
User: theist
Functions: cat grep perl sort uniq
Tags: sort uniq geoip
-1
Up
Down
Per country GET report, based on access log. Easy to transform to unique IP

Per country GET report, based on access log. Easy to transform to unique IP

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while true; do sudo cat /dev/input/mouse0|read -n1;streamer -q -o /tmp/cam.jpeg -s 640x480 > /dev/null 2>&1; sleep 10;done
2012-04-22 01:51:30
User: SQUIIDUX
Functions: cat read sleep sudo
Tags: cat streamer
4
Up
Down
Take aWebcam Picture When the Mouse Moves

This takes a webcam picture every everytime the mouse is moved (waits 10 seconds between checking for movement) and stores the picture wherever you want it.

Ideas:

Use in conjunction with a dropbox type application to see who is using your computer

Use /dev/input/mice if /dev/input/mouse* doesn't work

Use the bones of this to make a simple screensaver

Comments (1) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
while true; do iptables -nvL > /tmp/now; diff -U0 /tmp/prev /tmp/now > /tmp/diff; clear; cat /tmp/diff; mv /tmp/now /tmp/prev; slee p 1; done
2012-04-15 00:02:33
User: unixmonkey34223
Functions: cat diff iptables mv
Tags: grep iptables watch diffe
0
Up
Down
watch iptables counters

this alternative shows the differences as they occur so that they are made plain

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yes "" | cat -n | awk '{print "S=`echo All work and no play makes Jack a dull boy. | cut -c",($1 - 1) % 43 + 1 "`;echo -n \"$S\";seq 500000 > /dev/null"}'| bash
2012-04-08 07:53:43
User: nati
Functions: awk cat yes
1
Up
Down
The scene in the Shining (Stanley Kubrick)

Let's take a rest.

How about watch a horror?

The Shining

http://en.wikipedia.org/wiki/The_Shining_(film)

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sed G input.txt | cat -s
2012-04-07 02:15:18
User: kev
Functions: cat sed
Tags: cat sed
0
Up
Down
insert blank lines
Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
cat z.log | perl -ne 'BEGIN{ print "DATE;RATE\n"; } /\[(\d.*)\]/ && print $1; /CURRENT RATE: +(\S+) msg.*/ && print ";" .$1 . "\n"; '
2012-04-03 13:52:20
User: hute37
Functions: cat perl
1
Up
Down
multiline data block parse and CSV data extraction with perl

extract data in multiline blocks of data with perl pattern matching loop

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pdftk A=1.pdf B=2.pdf C=3.pdf cat C A output CA.pdf
2012-03-28 15:41:44
User: bossNova
Functions: cat
Tags: pdf files pdftk
0
Up
Down
pdftk append with handles
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pdftk 1.pdf 2.pdf cat output 12.pdf
2012-03-28 15:38:34
User: bossNova
Functions: cat
Tags: pdf files pdftk
0
Up
Down
pdfappend: append multiple pdf files
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cat > file_name
2012-03-27 11:38:09
User: michaelrozar17
Functions: cat
Tags: output redirection
-2
Up
Down
Copy paste contents quickly and save as a file

Write script or commands in notepad/Editplus/MS word etc, copy the contents, type the above command and click on enter now, paste by right click-ing the mouse. Entire contents in the clip-board gets pasted now again click on Enter to go to new line/next line. Press Ctrl+D to close/save the file. Not always required to vi to create a new file.

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wget -q ip.nu && cat index.html
2012-03-23 03:14:37
User: VictorBjelkholm
Functions: cat wget
-1
Up
Down
View external IP
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find . -type f -name "*.*" -exec cat {} > totalLines 2> /dev/null \; && wc -l totalLines && rm totalLines
2012-03-22 13:11:53
User: philwc
Functions: cat find rm wc
0
Up
Down
Get Total Line Count Of All Files In Subdirectory (Recursive)
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ps h --ppid $(cat /var/run/apache2.pid) | awk '{print"-p " $1}' | xargs sudo strace
2012-03-21 01:59:41
User: colinmollenhour
Functions: awk cat ps sudo xargs
Tags: awk apache ps strace
1
Up
Down
easily strace all your apache *child* processes

Like the original version except it does not include the parent apache process or the grep process and adds "sudo" so it can be run by user.

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for a in $(cat sample.txt); do echo "${#a} $a";done|sort -n
2012-03-15 09:21:29
User: livibetter
Functions: cat echo sort
0
Up
Down
Print all words in a file sorted by length
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for a in $(cat sample.txt); do echo "$(wc -m<<<$a) $a";done|sort -n
2012-03-15 08:51:42
User: knoppix5
Functions: cat echo sort
0
Up
Down
Print all words in a file sorted by length

optionally you can add

|cut -d' ' -f2|uniq

to the end of the command line.

Comments (4) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
x=1024; y=32768; cat <(echo -e "P5\n$x $y\n255\n") <(dd if=/dev/sda1 bs=$x count=$y) > sda1.pgm
2012-03-06 03:09:16
User: claudelepoisson
Functions: cat dd echo
Tags: dd images pnm pgm
1
Up
Down
Look at your data as a greymap image.

Keep width to a power of 2 to see patterns emerge. 512 is good. So is 4096 for huge maps.

PNM headers are super basic.

http://netpbm.sourceforge.net/doc/pbm.html

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cat z.log | cut -d ':' -f1,2 | uniq -c
2012-02-28 17:29:46
User: hute37
Functions: cat cut uniq
Tags: uniq
0
Up
Down
Count loglines by time (minute)

depends on date format locale ...

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cat z.log | cut -d ':' -f1 | sort | uniq | xargs -l1 -iFF echo 'echo FF $(cat z.log | grep -e "^FF" | grep -e Timeout | wc -l )' | bash
2012-02-28 17:25:14
User: hute37
Functions: cat cut echo grep sort uniq wc xargs
Tags: uniq xargs
0
Up
Down
Report summary of string occurrence by time period (hour) - alternate

useful to count events in logs

@see: http://www.commandlinefu.com/commands/view/10327/report-summary-of-string-occurrence-by-time-period-hour#comment

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cat z.log | grep Timeout | cut -d ':' -f1 | sort | uniq -c
2012-02-28 17:22:17
User: hute37
Functions: cat cut grep sort uniq
Tags: uniq
0
Up
Down
Report summary of string occurrence by time period (hour)

useful to count events in logs

Show sample output | Comments (2) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
cat file.txt | putclip
2012-02-23 08:32:12
User: jeloou
Functions: cat
0
Up
Down
Copy a file content to clipboard on Cygwin
Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
#(see sample) $ cat x | perl -pe 'BEGIN{ print "TIME;...\n"; } s!(\S+) - (\S+) - \[(\d\d)/(\S\S\S)/(\S+):(\d\d):(\d\d:\d\d) \S+\] "(\S+) (.*/)(\S+)(?:\.([^?]*)(\?\S*)?) HTTP/\S+" (\d+) (\S+)!$3-$4-$5 $6:$7;$6;$2;$1;$8;$13;1;$14;$11;$10;$9;$12;!' > x.csv
2012-02-10 16:58:50
User: hute37
Functions: cat perl
2
Up
Down
Apache CLF access log format to CSV converter

- excel date compatible with a separate hour field

- added a fixed 1 for easier request counter aggregation

- split URL in directory, filename, fileext, query

- used with tomcat valve with response bytes replaced by elapsed time

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x="/tmp/auth.html";sudo cat /var/log/auth.log | logtool -o HTML >$x;xdg-open $x;rm $x
2012-02-09 13:36:21
User: unixmonkey30696
Functions: cat rm sudo
0
Up
Down
Export log to html file

similar to previous except this exports to a temporary file, opens that file with your default web browser, then deletes it.

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PID=`ps | grep process_name | grep -v grep | head -n 1 | awk '{print $1}'`; cat /proc/$PID/smaps | grep heap -A 2
2012-01-30 13:31:40
User: yohananov
Functions: awk cat grep head
Tags: proc
0
Up
Down
Print heap addresses and size
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