Commands using cat sorted by votes

Commands using cat (514)

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cut log with row number,like from row number to another row number.

cut log from row 100 to row 150.
This is sample output - yours may be different.
0

cat -n install | head -n 150 | tac | head -n 50 | tac

cuizhaohua · 2013-05-02 08:11:04 6
cut log from line 50 to line 88

cut log from line 50 to line 88
This is sample output - yours may be different.
0

cat -n install.log | head -88 | tac | head -n $(( 88 - 50 )) | tac

cuizhaohua · 2013-05-02 08:39:54 6
Put files back together after encrypted with tar and ccrypt
This is sample output - yours may be different.
0

cat file.gz.cpt *[a-z] | ccdecrypt -k yoursecretpassword | tar -xzf -

symgryph · 2013-05-10 12:44:12 9
Produces a list of when your domains expire
This is sample output - yours may be different.
0

cat domainlist.txt | while read line; do echo -ne $line; whois $line | grep Expiration ; done | sed 's:Expiration Date::'

jun3337 · 2013-05-13 02:55:17 8
Transfer 1 file with ssh

Where filein is the source file, destination.com is the ssh server im copying the file to, -c arcfour,blowfish-cbc is selecting the fastest encryption engines, -C is for online compressions and decompression when it comes off the line - supposed to speed up tx in some cases, then the /tmp/fileout is how the file is saved... I talk more about it on my site, where there is more room to talk about this: http://www.kossboss.com/linuxtarpvncssh and http://www.kossboss.com/linux---transfer-1-file-with-ssh Show Sample Output
This is sample output - yours may be different.
```
Where filein is the source file, destination.com is the ssh server im copying the file to, -c arcfour,blowfish-cbc is selecting the fastest encryption engines, -C is for online compressions and decompression when it comes off the line - supposed to speed up tx in some cases, then the /tmp/fileout is how the file is saved...

I talk more about it on my site, where there is more room to talk about this:
http://www.kossboss.com/linuxtarpvncssh
and
http://www.kossboss.com/linux---transfer-1-file-with-ssh
```
0

cat filein | ssh destination.com -c arcfour,blowfish-cbc -C -p 50005 "cat - > /tmp/fileout"

bhbmaster · 2013-05-30 07:18:46 6
diff remote and local sshd_configs
This is sample output - yours may be different.
0

colordiff <(ssh user@host cat /etc/ssh/sshd_config) /etc/ssh/sshd_config

ssstonebraker · 2013-08-08 15:43:04 6
Create a CD/DVD ISO image from disk.
This is sample output - yours may be different.
0

cat /dev/cdrom > ~/img.iso

fhh · 2013-09-17 19:08:54 6
IBM AIX: Verify a sha256sum listing with openssl

This command is used to verify a sha256sum-formatted file hash list on IBM AIX or any other UNIX-like OS that has openssl but doesn't have sha256sum by default. Steps: 1: Save to the filesystem a script that: A: Receives as arguments the two parts of one line of a sha256sum listing B: Feeds a file into openssl on SHA256 standard input hash calculation mode, and saves the result C: Compares the calculated hash against the one received as argument D: Outputs the result in a sha256sum-like format 2: Make the script runnable 3: Feed the sha256sum listing to xargs, running the aforementioned script and passing 2 arguments at a time Show Sample Output
This is sample output - yours may be different.
```
cognos-EARs/ServletGateway-1021-SDK-customized.ear: OK
cognos-EARs/ServletGateway-1021-SDK-customizedandfixed.ear: OK
cognos-EARs/ServletGateway-1021-base.ear: OK
cognos-EARs/p2pd-1021-SDK-customized.ear: OK
cognos-EARs/p2pd-1021-base.ear: OK
```
0

echo '#! /usr/bin/ksh\ncat $2 | openssl dgst -sha256 | read hashish; if [[ $hashish = $1 ]]; then echo $2: OK; else echo $2: FAILED; fi;' > shacheck; chmod +x shacheck; cat hashishes.sha256 | xargs -n 2 ./shacheck;

RAKK · 2013-09-18 21:51:20 8

Display a numbered list of 50 biggets files sorted by size (human readable)

du -ah | sort -hr | head -n50 | cat -n

rgregor · 2013-10-01 10:16:13 6

Display a numbered list of files bigger than 500K, sorted by size (human readable)

"find ./ ..." could be replaced with "find $PWD ..." to display absolute path instead of relative path. Show Sample Output
This is sample output - yours may be different.
```
     1  4.1M ./ydownloads/youtube-dl.exe
     2  3.1M ./docs/Learn-Linux-and-get-certified_20120711.pdf
     3  1.4M ./docs/building-NAS-Server.doc
     4  772K ./docs/port-numbers.txt
     5  748K ./docs/building-NAS-Server.pdf
     6  592K ./docs/VIM_UG.txt
     7  548K ./docs/navodila-upn.pdf
```
0

find ./ -type f -size +500k -exec ls -1Ash {} \; | sort -hr | cat -n

rgregor · 2013-10-01 10:32:28 5
Convert input to a line of quote protected CSV
This is sample output - yours may be different.
0

cat file | paste -s -d'%' - | sed 's/$^\|$$/"/g;s/%/","/g'

JohnGH · 2013-11-12 17:48:10 15
You can access some-image.html where you include a image any other file than you can access it through http using a browser (e.g. http://xxx.xxx.xxx.xxx:12345 )
This is sample output - yours may be different.
0

cat some-image.html | nc -v -l -p 12345

stefan1st · 2014-01-20 07:05:11 8
Check fstab volumes and volumes mounted.

With this command, you can check the difference between the volumes mounted and the volume in /etc/fstab.
This is sample output - yours may be different.
0

diff <(cat /etc/fstab | grep vol | grep -v "^#" | awk '{print $1}') <(df -h | grep vol)

Koobiac · 2014-01-23 15:18:08 11
TCP server on one socket

A TCP server that keeps the same socket open, sending the contents of "file" repeatedly.
This is sample output - yours may be different.
0

while true; do cat "file"; done | nc -v -l 1337

bknk · 2014-02-06 03:02:58 6
Convert metasploit cachedump files to Hashcat format for cracking
This is sample output - yours may be different.
0

cat cachedump.txt | awk -F : '{print $2":"$1}'

greatodensraven · 2014-02-25 17:19:38 7
Save a result based on a command's output in a variable while printing the command output

Many circumstances call for creating variable of a summary result while still printing the original pipe. Inserting "tee >(cat >&2)" allows the command output to still be printed while permitting the same output to be processed into a variable. Show Sample Output
This is sample output - yours may be different.
```
Mar 11 18:02:35 hostname kernel: [    0.896119] [drm:intel_dp_i2c_aux_ch] *ERROR* 
Mar 11 18:02:35 hostname kernel: [    0.898782] [drm:intel_dp_i2c_aux_ch] *ERROR* 
Mar 11 18:02:35 hostname kernel: [    3.123365] [drm:udl_parse_] *ERROR* 

>> echo $num_errs
3
```
0

num_errs=`grep ERROR /var/log/syslog | tee >(cat >&2) | wc -l`

accountholder · 2014-03-12 00:04:24 11
Bruteforce dm-crypt using dictionary

Lost your luks passphrase? You can always bruteforce from the command line. See the sample output, a simple command using a dictionary. Show Sample Output
This is sample output - yours may be different.
```
# cat dictionary.txt|while read a; do echo $a; echo $a|cryptsetup luksOpen /dev/sda5 $a && echo KEY FOUND; done
pass
No key available with this passphrase.
PasS
No key available with this passphrase.
PASs
No key available with this passphrase.
PA5s
No key available with this passphrase.
P4s5
KEY FOUND
...

# ls -l /dev/mapper/
total 0
crw------T 1 root root 10, 236 Apr 16 19:49 control
lrwxrwxrwx 1 root root       7 Apr 16 20:34 P4s5 -> ../dm-1
```
0

cat dictionary.txt|while read a; do echo $a|cryptsetup luksOpen /dev/sda5 sda5 $a && echo KEY FOUND: $a; done

rodolfoap · 2014-04-16 18:49:53 10
To Find CVE fix from the rpm log

Found it online and could be very useful
This is sample output - yours may be different.
0

for i in $(cat vulns.txt); do echo $i; rpm -qa ?changelog | grep -i $i; done

sonny108 · 2014-04-30 16:11:14 6
ssh copy
This is sample output - yours may be different.
0

cat ~/.ssh/id_rsa.pub | ssh deployer@xxxxx -p 52201 'cat >> ~/.ssh/authorized_keys'

sahin · 2014-05-11 03:15:56 11
Get own public IP address

This is the command line I use to get my IP address in order to update my zoneedit account. Full script on my blog http://akim.sissaoui.com/linux-attitude/script-de-mise-a-jour-ddns-zoneedit-com-en-bashsh/ Show Sample Output
This is sample output - yours may be different.
```
82.146.xxx.xxx
```
0

$ wget --no-check-certificate -q checkip.dyndns.org -O index.html && cat index.html|cut -d ' ' -f 6 | cut -d '<' -f 1

Superkikim · 2014-05-12 07:10:29 8
Query VirusTotal Hash DB using a Public APIKEY

Replace "APIKEY" with your public apikey Show Sample Output
This is sample output - yours may be different.
```
VTHits 
VTHits 46,md5:99017f6eebbac24f351415dd410d522d
VTHits 0,md5:ca4293242b7679bdc057d3437f6977d4
VTHits 
VTHits 
```
0

cat h.txt| while read line; do curl -s -X POST 'https://www.virustotal.com/vtapi/v2/file/report' --form apikey="APIKEY" --form resource="$line"|awk -F'positives\":' '{print "VTHits"$2}'|awk -F' ' '{print $1" "$2$5$6}'|sed 's/["}]//g' && sleep 15; done

jsbrown · 2014-07-17 16:10:28 7
Save a file you edited in vim without the needed permissions
This is sample output - yours may be different.
0

w !sudo cat >%

parsa · 2014-08-03 17:31:01 7
search system log for spamassassin score and list only 15th column
This is sample output - yours may be different.
0

cat /var/log/syslog | grep score= | awk '{print $15}' | more

unix1776 · 2014-08-21 21:40:17 8
Resource Monitoring

Monitoring system in one line : DISK : disk space MEM: memory ( mem , swap, Total) CPU : all information about cpu activity LOAD : load average Show Sample Output
This is sample output - yours may be different.
```
DISK:
94% /
6% /boot
0% /dev/shm
MEM:
total used free shared
Mem: 7983 7580 403
Swap: 12287 6 12281
Total: 20271 7586 12685
CPU:
0.3%us, 0.2%sy, 0.1%ni, 98.2%id, 1.1%wa, 0.0%hi, 0.1%si, 0.0%st
LOAD:
0.02 0.03 0.00 1/417 15018
```
0

echo "DISK:";df -Pl | grep -v "Filesystem" | awk '{print $5,$6}' ; echo "MEM:" ; free -mto | awk '{ print $1,$2,$3,$4 }'; echo "CPU:"; top -b -d1 -n1 | grep Cpu | awk '{print $2,$3,$4,$5,$6,$7,$8,$9}';echo "LOAD:"; cat /proc/loadavg

injez · 2014-09-29 12:43:52 35
Get domains on the server

Allows you to have a list of the domains on the server.
This is sample output - yours may be different.
0

cat /etc/named.conf | grep -Po '(?<=(named/)).*(?=\.db)'

KonKar · 2014-10-25 20:16:17 6
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sends a postscript file to a postscript printer using netcat

Set laptop display brightness

Run as root. Path may vary depending on laptop model and video card (this was tested on an Acer laptop with ATI HD3200 video). $ cat /proc/acpi/video/VGA/LCD/brightness to discover the possible values for your display.

Convert CSV to JSON

Replace 'csv_file.csv' with your filename.

Check if the Debian package was used since its installation/upgrade.

This script compares the modification date of /var/lib/dpkg/info/${package}.list and all the files mentioned there. It could be wrong on noatime partitions. Here is non-oneliner: #!/bin/sh package=$1; list=/var/lib/dpkg/info/${package}.list; inst=$(stat "$list" -c %X); cat $list | ( while read file; do if [ -f "$file" ]; then acc=$(stat "$file" -c %X); if [ $inst -lt $acc ]; then echo used $file exit 0 fi; fi; done exit 1 )

List all process running a specfic port

your terminal sings

you know the song... sing along

Add directory to $PATH if it's not already there

Sometimes in a script you want to make sure that a directory is in the path, and add it in if it's not already there. In this example, $dir contains the new directory you want to add to the path if it's not already present. There are multiple ways to do this, but this one is a nice clean shell-internal approach. I based it on http://stackoverflow.com/a/1397020. You can also do it using tr to separate the path into lines and grep -x to look for exact matches, like this: $ if ! $(echo "$PATH" | tr ":" "\n" | grep -qx "$dir") ; then PATH=$PATH:$dir ; fi which I got from http://stackoverflow.com/a/5048977. Or replace the "echo | tr" part with a shell parameter expansion, like $ if ! $(echo "${PATH//:/$'\n'}" | grep -qx "$dir") ; then PATH=$PATH:$dir ; fi which I got from http://www.commandlinefu.com/commands/view/3209/. There are also other more regex-y ways to do it, but I find the ones listed here easiest to follow. Note some of this is specific to the bash shell.

Mysql extended status

Useful when checking MySQL status.

Locate config files of the program

Locate config files of the program. May not be used for interactive programs like vim.

processes per user counter

enumerates the number of processes for each user. ps BSD format is used here , for standard Unix format use : ps -eLf |awk '{$1} {++P[$1]} END {for(a in P) if (a !="UID") print a,P[a]}'

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Commands using cat (514)

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