LINUX – How do you make `ls` show file sizes in megabytes?
ls -l –block-size=M will give you a long format listing (needed to actually see the file size) and round file sizes up...
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BASH – What is the difference between `grep`, `egrep`, and `fgrep`?
Grep: Grep (Global Regular Expression Print) is a command-line utility for searching plain-text data sets for lines matching...
BASH – What does “rc” in .bashrc stand for
“rc” in .bashrc stand for: It stands for “run commands”. This comes from MIT’s CTSS (Compatible Time-Sharing System) and...
[Solved – 3 Answers] LINUX – How to split the terminal into more than one “view”
PROBLEM: From vi, if you issue the command :sp, the screen splits into two “views”, allowing you to edit more...
[Solved -7 Answers] LINUX – How can you close a terminal without killing the command running in it
PROBLEM: Sometimes you want to start a process and forget about it. If you start it from the command line, like this: [ad...
Linux – /usr/bin vs /usr/local/bin on Linux
/usr/bin: The /usr/bin Directory. /usr/bin is a standard directory on Unix-like operating systems that contains most of the...
What does “–” (double-dash) mean? (also known as “bare double dash”)
Double dash: The double dash “–” means end of command line flags i.e. it tells the preceding command not...
Linux – What are the pros and cons of Vim and Emacs
Emacs: Emacs (pronounced EE-maks and sometimes spelled “emacs” or “EMACS”) Emacs is one of the most...
What is the purpose of the lost+found folder in Linux and Unix
Purpose of the lost+found folder: This directory is for recovering files which are not properly closed due to many reason...
How to unfreeze after accidentally pressing Ctrl-S in a terminal
CTRL+S essentially does XOFF, which means the terminal will accept key strokes but won’t show the output of...
