start wifi connection sudo service network-manager start stop wifi connection sudo service network-manager stop

Starts qbittorrent-nox (or any other program) and dettach it from the terminal it was ran in. When you exit, the program keeps running. Show Sample Output

New objects cannot be assigned by reference. The result of the new statement can no longer be assigned to a variable by reference. Check the "Sample Output" example ("sample.php"). The Output of the above example in PHP 5: "Deprecated: Assigning the return value of new by reference is deprecated in sample.php on line 3". Output of the above example in PHP 7: "Parse error: syntax error, unexpected 'new' (T_NEW) in sample.php on line 3. Show Sample Output

http://handbrake.fr/

Say you have a directory structure like "foo/, foo/data/, bar/, bar/data/". If you just want to ignore 'bar/data' and you use "ack --ignore-dir=data pattern" it will ignore both foo/data and bar/data and 'ignore-data=bar/data' etc won't work.

Lists all packages in "rc" state and purge them one at a time.

Does the same but without a pipe and a new shell.

runs the specified ssh command on all chef nodes

This lists the number of ogg/mp3/wav/flac files in each subdirectory of the current directory. The output can be sorted by piping it into "sort -n". Show Sample Output

In a multiple PostgreSQL server environment knowing the servers version can be important. Note that psql --version returns just the local psql apps version which may not be what you want. This command dumps the PostgreSQL servers version out to one line. You may need to add more command line options to the psql command for your connection environment. Show Sample Output

alias screen-brightness='xbacklight -set' alias screen-off='xset dpms force standby' alias screen-min='xbacklight -set 1' alias screen-max='xbacklight -set 100' alias screen-inc='xbacklight -inc 10' alias screen-dec='xbacklight -dec 10'

This is how you can do this without having to use oneline Show Sample Output

As output, checksums and filenames will be printed.

Use duckduckgo from terminal: ddg commandline one liners Want Google instead? :P lmgtfy(){ ARGS="$@"; xdg-open "http://www.lmgtfy.com/?q=${ARGS}#"; } lmgtfy "What the f*** is lmgtfy?" Or just: google(){ ARGS="$@"; xdg-open "https://www.gooogle.com/search?q=${ARGS}"; } google Please Google, take my soul

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.

This will use tput to place the command (date %T in this case) in the upper right corner of the terminal

Output manpage as plaintext using cat as pager: man -P cat commandname And redirect its stdout into a file: man -P cat commandname > textfile.txt Example: man -P cat ls > man_ls.txt