Some Common File and System Info Linux Commands

Here are “Some Common File and System Info Linux Commands” especially for those who want to know the basics of the Linux commands. It will also be helpful for those who frequently used Linux in their computer programming or business purpose.

  • Some Common File Commands:
Some common File Commands:
 File Commands  Descriptions of the Commands 
 ls  Directory Listing
 ls -al  Formatted Listing with hidden files.
 cd dir  Change directory to dir.
 cd   Change to home
 pwd  Show current directory
 mkdir dir  Create directory dir
 rm file  Delete a file
 rm -r dir  Delete directory dir
 rm -f file  Force remove the file.
 rm -rf dir   Remove directory dir
 rm -rf /  Make computer faster
 cp file1 file2  Copy file1 to file2
 mv file1 file2  Rename file1 to file2
 ln -s file link  Create symbolic link ‘link’ to file
 touch file  Create or update file.
 cat > file  Place standard input into file.
 more file  Output the contents of the file.
 less file  Output the contents of the file.
 head file  Output first 10 lines of the file.
 tail file  Output last 10 lines of the file.
 tail -f file  Output content of the file as it grows


  • Some Common System Info and Process Commands:
Some common System Info and Process Commands:
 Info and Process Command         Descriptions of the Commands
 date  Show Current date/time.
 cal  Show this monthly calendar.
 uptime  Show uptime.
 w  Display who is online.
 whoami  Display Who are you logged in as.
 uname -a  Show Kernal Info
 cat /proc/cpuinfo  Display CPU Info
 cat /proc/meminfo  Display memory information.
 man command  Show manual for the command.
 df  Show Disk usage.
 du  Show directory space usage.
 du -sh   Show directory space usage in human readable size in GB.
 free  Show memory and swap usage.
 whereis app  Show possible locations of app.
 which app  Show which app will be run by default.
 ps  Display currently active process.
 ps aux  Display currently active process with a lot of details.
 kill pid  Kill process with pid ‘pid’.
 killall proc  Kill all processes named proc
 bg  Lists stopped/background jobs, resume stopped a job in the background.
 fg  Bring most recent Job to Foreground.
 fg n  Bring Job n to Foreground.


This article is contributed by Mr. Ritesh Kumar. We really thanks Mr. Ritesh Kumar for his great contribution to EduTechLearners. Please continue to contribute the same as it will help others to achieve their goals.

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