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Linux commands

Linux commands

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  • 1. Linux Commands Copyrights | SkilledInterns.com
  • 2. ls – shows list of files & directories• fanaticgeek:~ gaurangaggarwal$ mkdir shishpal• mkdir – creates a new directory Copyrights | SkilledInterns.com
  • 3. • fanaticgeek:~ gaurangaggarwal$ cd shishpal/• cd – change directory Copyrights | SkilledInterns.com
  • 4. • fanaticgeek:shishpal gaurangaggarwal$ ls• ls shows all the files and directories except the hidden files Copyrights | SkilledInterns.com
  • 5. • fanaticgeek:shishpal gaurangaggarwal$ mkdir shishpal is a good boy• mkdir can create multiple directories at same time . Copyrights | SkilledInterns.com
  • 6. • fanaticgeek:shishpal gaurangaggarwal$ ls• a boy good is shishpal• ls now showing all the 5 directories created using just one command Copyrights | SkilledInterns.com
  • 7. now ls –l shows every detail about files and directories• fanaticgeek:shishpal gaurangaggarwal$ ls -l• total 0• drwxr-xr-x 2 gaurangaggarwal staff 68 Jul 5 09:26 a• drwxr-xr-x 2 gaurangaggarwal staff 68 Jul 5 09:26 boy• drwxr-xr-x 2 gaurangaggarwal staff 68 Jul 5 09:26 good• drwxr-xr-x 2 gaurangaggarwal staff 68 Jul 5 09:26 is• drwxr-xr-x 2 gaurangaggarwal staff 68 Jul 5 09:26 shishpal Copyrights | SkilledInterns.com
  • 8. • drwxr-xr-x are the permissions of the file or folder – 1-2-3 – user-group-others• w – write• x – execute• r – read Copyrights | SkilledInterns.com
  • 9. • fanaticgeek:shishpal gaurangaggarwal$ ls -a• . a good shishpal• .. boy is• ls –a = shows hidden files and folders• . & .. are the hidden files Copyrights | SkilledInterns.com
  • 10. • fanaticgeek:shishpal gaurangaggarwal$ ls -la• total 0• drwxr-xr-x 7 gaurangaggarwal staff 238 Jul 5 09:26 .• drwxr-xr-x+ 69 gaurangaggarwal staff 2346 Jul 5 09:25 ..• drwxr-xr-x 2 gaurangaggarwal staff 68 Jul 5 09:26 a• drwxr-xr-x 2 gaurangaggarwal staff 68 Jul 5 09:26 boy• drwxr-xr-x 2 gaurangaggarwal staff 68 Jul 5 09:26 good• drwxr-xr-x 2 gaurangaggarwal staff 68 Jul 5 09:26 is• drwxr-xr-x 2 gaurangaggarwal staff 68 Jul 5 09:26 shishpal• details are shown for hidden files as well because of –a Copyrights | SkilledInterns.com
  • 11. mv• mv is for moving the files or folder• mv file1 to file2• file1 will be deleted• and renamed to file2• only file2 will be shown Copyrights | SkilledInterns.com
  • 12. cp• cp file1 file2• you will be having 2 files• file1 , file2 Copyrights | SkilledInterns.com
  • 13. Ctrl Z• is used for stopping the currently running command Copyrights | SkilledInterns.com
  • 14. Up key• shows previous commands Copyrights | SkilledInterns.com
  • 15. man• man <command name>• shows manual / help page of the command• eg : man ls• it shows help page of “ls” command Copyrights | SkilledInterns.com
  • 16. Ctrl R• if you remember some alphabets of past commands then type that after pressing Ctrl R . Copyrights | SkilledInterns.com
  • 17. top• shows all the processes running in your terminal• Processes: 154 total, 4 running, 1 stuck, 149 sleeping, 902 threads 09:38:54• Load Avg: 0.81, 0.90, 0.86 CPU usage: 6.71% user, 3.35% sys, 89.92% idle• SharedLibs: 3916K resident, 6656K data, 0B linkedit.• MemRegions: 74165 total, 2118M resident, 40M private, 725M shared.• PhysMem: 1134M wired, 1964M active, 961M inactive, 4059M used, 29M free.• VM: 323G vsize, 1043M framework vsize, 6354631(13) pageins, 1719226(0) pageouts.• Networks: packets: 2754466/2096M in, 2972528/824M out.• Disks: 3441373/73G read, 1767764/81G written.• PID COMMAND %CPU TIME #TH #WQ #PORT #MREGS RPRVT RSHRD RSIZE• 6462 top 15.1 00:00.90 1/1 0 24 33 1596K 244K 2176K• 6458 fontd 0.0 00:00.11 3 1 78 115 4244K 616K 5288K• 6456- mdworker32 0.0 00:00.23 3 1 53 136 2872K 5772K 7496K Copyrights | SkilledInterns.com