Basic Commands Linux . Just like when you type a command in DOS, the command line in Linux is also entered in the prompt that is in the shell and topped enter to execute the command. Shell is "Command Executive"
shall mean the user who await instructions, check the syntax and translate the instructions then execute him. In general, the shell is marked with a command prompt, in Linux for a normal user usually sign $ and for the super user is usually the sign #. Shell was different, commonly used in Linux bash.
If you have difficulty in understanding how to use a command, you can view the manual. It is very easy, by typing in the command line (shell) man. Suppose you want to know how to use the ls command, type:
$ Man ls
Here are some basic commands that you can learn the usefulness of each of the command:
1.cal
Purpose: display the contents of a calendar
2.cc
Uses: compile program
3.date
Uses: date and time calculator
4.lp
Purpose: print the contents of the document
5.spell
Purpose: to spell words
6.cat
usability: create file / view the contents of the file
7.ls
usability: view the contents of a directory / folder
8.cp
usability: copy file
9.mkdir
usability: create a directory / folder
10.cd
usability: change dir / dir and out
11.grep
usability: search for specific words in a file
example:
root @ ubuntu :/ home / ubuntu # grep "command" lab
root @ ubuntu :/ home / ubuntu # grep "this" testing
root @ ubuntu :/ home / ubuntu # grep "minimum" testing
12.pwd
usability: see the active directory / work
13.mv
usability: change / move the file name
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