Linux commands part II

In this post, we will discuss some more basic commands of Linux. I hope you have already gone through Linux commands Part I.

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  df command in linux:

  
  

df command in linux gives information about the amount of free spaces in the filesystem.

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  free command in linux:

  
  

it gives information about free spaces and used spaces and swap space too.

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  cat commadn in linux:

  
  

it shows the content of a file on command line.

e.g. let's make a file called file.txt

and put some content there.  then use cat command.

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  wc command in linux:

  
  

it shows the information about the number of lines, words and characters in a file.

There are mainly three operations  in this command:

1. wc -l


2. wc -w


3. wc -c

 

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  grep command in linux:

  
  

it helps in searching content in a file.

you can read more about grep at grep tutorial

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  cp command in linux:

  
  

it is used to copy file and directories.

Synatx:

cp source destination

we are going to copy file.txt to our desktop.