This command will backup the entire / directory, excluding /dev, /proc, /sys, /tmp, /run, /mnt, /media, /lost+found directories. Let us break down the above command and see what each argument does. rsync: A fast, versatile, local and remote file-copying utility -aAXv: The files are transferred in ?archive? mode, which ensures that symbolic links, devices, permissions, ownerships, modification times, ACLs, and extended attributes are preserved. -/: Source directory -exclude: Excludes the given directories from backup. -/mnt: It is the backup destination folder. Please be mindful that you must exclude the destination directory, if it exists in the local system. It will avoid the an infinite loop. To restore the backup, just reverse the source and destination paths in the above command.
Generate a random password quickly in CLI using openssl Show Sample Output
For example to add up the disk usage at several disjoint locations. The $[..] is for arithmetic evaluation in bash. Alternatively pipe to the bc command. Show Sample Output
select generic 105 intl. pc > german (turkisch)
This is something I wrote for myself, to use on a server that I manage where the users have cryptic usernames, and I'd like to tag them with clear text.
I'll modify it in the future to parse /etc/password which is the database where this information is from (which is a better way to achieve this).
Add the following line to your .bashrc to check it out:
function fingr() { sudo printf "User Name [$1]:" && sudo printf "\n\n\n\n\n" | sudo chfn $1 | grep : ; }
The idea to write something like that came after reading this post (I'm not affiliated):
http://shinnok.com/rants/2013/09/18/alternative-to-the-finger-unix-command
$ fingr root
User Name [root]: Full Name [Mr. Root]: Room Number []: Work Phone [555-GOT-ROOT]: Home Phone [] Other [Root account]:
Show Sample Output
Some sites running on basic web servers don't support the HEAD request, so using "curl -I" on them doesn't work. This will automatically try "curl -I" at first and if that fails with a 4xx or 5xx status code, it falls back to "curl -i" and prints only the headers from that.
When you go to git repository from the terminal it will display currently checked out git branch in the prompt. Show Sample Output
This command shows you how much is RSS utilization and real memory Show Sample Output
Colorize each job in a new color.
Extrae los registros MX Show Sample Output
Obtener nombre de dominio de un archivo Show Sample Output
oder: ip route get $(dig +short google.com | tail -1)
to enable, replace disable with enable
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