Some Linux Command Line Tricks
This is a modified version based on http://www.linuxjournal.com/content/time-saving-tricks-command-line.
Ctrl-r: reverse interactive search of command history.
Ctrl-w: cut text backward until space.
Ctrl-l: clear the command window.
Esc-Backspace: cut one word backward.
Esc-Delete: cut one word forward.
Ctrl-k: cut from current position until the end of the line.
Ctrl-y: paste the most recently cut text.
Ctrl-a: jump to the beginning of the line.
Ctrl-e: jump to the end of the line.
Esc-b: jump one word backward.
Esc-f: jump one word forward.
tac: print the content of a text file in reverse order, i.e., from last line to first line.
yes “some string” : print a given string, till interrupt instruction is given.
shuf: random selection from a bunch of lines.
<space> Command : avoid the
Command to be recorded by
du -h –max-depth=1: print the size of sub-folders within the current directory, in human readable format.
nl filename: number the lines of a file.
curl ifconfig.me : print the external IP address.
last: show the history of last logged in users.