You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
52 lines
1.9 KiB
52 lines
1.9 KiB
************************
|
|
Appendix C Command line
|
|
************************
|
|
|
|
The command line or cli is text interface to your computer and an alternative to graphical user interfaces like windows. It typically involves typing text commands into a terminal to perform some operation. Although not necessary to learn, it can be helpful. The terminal (Ctrl + Alt + T) is a command line running in a window.
|
|
|
|
An exhaustive tutorial on the command line is a bit beyond the scope of the manual. The man command brings up the user manual and can be used to learn more about a commands use, its options and inputs. If you wanted to learn more about the df (disk free) command, enter the following into a command line:
|
|
|
|
.. code::
|
|
|
|
man df
|
|
|
|
This will show you the user manual for the df command containing and explanation of the command and other useful information. For example is the -h option gives a human readable output.
|
|
|
|
.. code::
|
|
|
|
df -h
|
|
|
|
will make a much nicer output than
|
|
|
|
.. code::
|
|
|
|
df
|
|
|
|
To list files on the current file system one of the most important commands to know is ls.
|
|
|
|
.. code::
|
|
|
|
ls
|
|
|
|
will show the files in your current directory and the man page lists more options such as viewing all files or long listing.
|
|
|
|
To change to another directory an important command is
|
|
|
|
.. code::
|
|
|
|
cd [dir]
|
|
|
|
where [dir] is the directory you want to switch to. Another thing that is useful is you can append .. after cd to make it go up one level.
|
|
|
|
|
|
|
|
There is also the command line for manageing and installing packages which is beyond the scope of this appendix but please see `apt package management <https://help.ubuntu.com/lts/serverguide/apt.html.en>`_ for how to insert and remove packages from the command line.
|
|
|
|
If you need to edit a text file from the command line the easiest editor included is nano so to edit a file from the command line if you broke something run
|
|
|
|
.. code::
|
|
|
|
nano [file]
|
|
|
|
where you replace [file] with the file you want to edit.
|