Shell Programming : 4

Hello.. Friends , In this Basic tutorials i am going to explains some other commands like creating files & Directory & Removing or Deleting them.

• cat

cat : concatenate files and print on the standard output

Syntax : cat [OPTION]... [FILE]...

cat commands is basically use to create a text file by the terminals.as we type cat  > filename & hit enter then it allows us to type anything you want in the file on the terminal and for saving this file we have to press ctrl+d . and if we want to read this file then we need to just change the operator from > to < .

to combine two files we just need to type cat file1 file2 > output 

we can create files by using touch  command too. this  is an empty file.

• mkdir : make directories

Syntax : mkdir [OPTION]... DIRECTORY...

mkdir command is used to create a directory . we just need to type mkdir and directory name .

& if we want to remove these files & dir then we can use rm commands . 

• rm : remove files or directories

if we just simply use rm filename then it remove just a file & if we want to remove the directory then we just need to type rm -r dirname .

i think it is important to discus these Basic topics before to start the scripting tutorials. Because the shell scripting is just a combinations of these all commands & if we Don't know about them then we can never move forwards.