Linux Administrators Common network resources (collect posts)

This article gives the force, collects is the Linux administrator commonly used network resources. Dumb Bunny wants to be useful to you Linux system administrators. If you like, take it away.

Corntab

The Corntab is an easy-to-access network crontab that creates crontab statements without the need for installation. Don't worry about formatting issues. Use the "crontab-e" command to enter and copy the crontab.
We know that the crontab command submits, edits, lists, or removes cron jobs. A cron job is a command whose run is performed by the Cron daemon at the scheduled interval of the rule "

Regular expressions

Kvalley-regex Evaluator
This site allows you to write characters and simply test whether the regular expression is running.

Similar websites are:

Regexpal is a JavaScript regular expression test site made by Xregexp;
"Remarks" Xregexp is a open source (MIT license) JavaScript Library that provides an augmented, extensible, Cross-browser imple Mentation of regular expressions, including support for additional syntax, flags, and methods.

Rubular is a ruby regular expression editor
http://regex.larsolavtorvik.com/is a PHP and JavaScript regular expression editor;

ASCII-making device

Here's the Ascii:Text:Bentutu of the Dumb bunny Bentutu.

______(____ \ _ _ ____) ) ____ ____ | |_ _ _| |_ _ _| __ ( / _ ) _ \| _) | | | _) | | || |__) | (/ /| | | | |_| |_| | |_| |_| || ______/ \____)_| |_|\___)____|\___)____|

Website: http://www.network-science.de/ascii/

Similar to the following:

Ascii Signature

Art Generator

Password generation

Dumb Bunny in the server 3.20 hanging off before writing an article on how to make a random password at the command line (this article, after reviewing:))

Online password generation @ Online password generator

MD5 Generator @ MD5 Generator

Upgrade Source list

Ubuntu Upgrade Source Generator @ http://repogen.simplylinux.ch/index.php, people choose the country according to the option, Ubuntu version and so on can generate the upgrade source list, and then replace the original system files with the generated list, this is really convenient!!

Similar to the Debian Sources List Generator

At the same time, we often use ginspect to generate INSPECT and tcpdump filter expressions.

Reference sources above

Attached: command line to make a random password

How to generate a random password under Linux? I have collected ten ways for you to use for reference only. Mark, if you need it. For any of the following commands, you can control the length of the output result.

#1

Date +%s | Sha256sum | Base64 | Head-c 32; Echo

The above command uses SHA to hash the date and output the first 32 bytes.

#2

</dev/urandom TR-DC _a-z-a-z-0-9 | Head-c${1:-32};echo;

The above command uses an inline/dev/urandom, outputting only characters, resulting in 32 headers.

#3

OpenSSL Rand-base64 32

The above command uses the random characteristics of the system's own OpenSSL to generate random passwords

#4

TR-CD ' [: alnum:] ' </dev/urandom | fold-w30 | Head-n1

#5

Strings/dev/urandom | Grep-o ' [[: Alnum:]] ' | Head-n 30 | Tr-d ' \ n '; Echo

Output random passwords by filtering character commands

#6

</dev/urandom TR-DC _a-z-a-z-0-9 | Head-c6

This command is easier than it is.

#7

DD if=/dev/urandom Bs=1 count=32 2>/dev/null | Base64-w 0 | Rev | Cut-b 2-| Rev

The above command uses the powerful function of the command DD

#8

</dev/urandom tr-dc ' [Email protected]#$%qwertqwertasdfgasdfgzxcvbzxcvb ' | Head-c8; echo ""

The above command output is simple

#9

RANDPW () {</dev/urandom tr-dc _a-z-a-z-0-9 | Head-c${1:-16};echo;}

Use RANDPW to generate a random password at any time, you can put it in the ~/.BASHRC file.
(I have no password generated here, can leave a message to discuss)

#10

Date | Md5sum

If only use this one, enough, because it is too concise,:-)

statement: Stupid rabbit original article, blog article follow the CC agreement, reprint need to indicate @ stupid rabbit, this article link address

#awk/shell

Linux Administrators Common network resources (collect posts)