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Howto Stress CPU

Use 3 cpu core

stress --cpu 3

Bash Profile Generator

Bash profile generator

#bash #ps1

Web server in one line of bash

while true; do { echo -e 'HTTP/1.1 200 OK\r\n'; cat index.html; } | nc -l 8080; done

Source: http://razvantudorica.com/08/web-server-in-one-line-of-bash/

#bash #shell #netcat #web server

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Getting sudo

by Kain

Installing unsigned packages with puppet [APT]

file { '/etc/apt/apt.conf.d/99auth': owner => root, group => root, content => 'APT::Get::AllowUnauthenticated yes;', mode =>644; }

#puppet #apt #install #unsigned #unauthenticated

Grep Context Line Control

-A NUM, --after-context=NUM Print NUM lines of trailing context after matching lines. Places a line containing a group separator (--) between contiguous groups of matches. With the -o or --only-matching option, this has no effect and a warning is given.

-B NUM, --before-context=NUM Print NUM lines of leading context before matching lines. Places a line containing a group separator (--) between contiguous groups of matches. With the -o or --only-matching option, this has no effect and a warning is given.

-C NUM, -NUM, --context=NUM Print NUM lines of output context. Places a line containing a group separator (--) between contiguous groups of matches. With the -o or --only-matching option, this has no effect and a warning is given.

#grep #context #line

Vi Find and replace

:%s/foo/bar/g

Find each occurrence of 'foo' (in all lines), and replace it with 'bar'.

:s/foo/bar/g

Find each occurrence of 'foo' (in the current line only), and replace it with 'bar'.

#vi #find and replace #sed

Git clone a repo without history

It can be used for quick clone

git clone --depth 1 repo.git

#git #clone #history #quick

Flush Python Standart Output