Common UNIX Commands

I just decied to look for a few commonly used UNIX command. A quick Google produces a lot more, but here are a list of more useful commands.

1. cd - Change Directory. (Just like in dos)
2. mkdir - Make Directory.
3. rmdir - Removes a Directory that is empty!
4. ls - List directory. (Like dir in Windows)
5. cat – Short for concatenate. It was used to concatenate two filestogether via cat file1 file2 >file3 Didn‘t know that did you. Theechoing out to standard out gave cat a whole new meaning to the users.
6. more - Just like less. It pages output to the screen.
7. mv - Move. For moving files and directories around
8. rm Remove a file. Also rm rf for removing a folder and it‘scontent.
9. grep - Used to search for text within a stream or files. (man regex)
10. vi – A text based editor. You‘ll find that it‘s really a symboliclink to vim now a days.
11. rlogin - Remote login. I hope your admins disabled this!
12. passwd - Used to change your password.
13. ps - Used to processes.
14. nice - Run a program with lower priority so you don't hog CPU.
15. kill – Terminates a program. You can select what signal you want tokill a program with also. -9
16. gzip - Compresses files.
17. gunzip - Uncompresses files.
18. tee – Pipe your output to standard out and to a file. Nice forwatching a process and logging.
19. sort - A sort program
20. sed – Stream Editor. Excellent program to modify files or streams!(man regex)
21. uniq - Unique program.
22. awk – An excellent program to parse up streams or files into tokens.It supports a hellva lot of cool things and you can complete writeprograms with it. (man nawk also)
23. chgrp - Change Group
24. chown - Change owner
25. pwd - Current working directory.
26. find – Used to find programs and you can also execute commands oneach match found.
27. wc - Word, line, letter count program. For you line counting whores.
28. which - Finds a location of a program that's in your path.
29. last - See who last logged in.
30. du - Disk usage.
31. df - Disk Free
32. top – Running processes with CPU and other information thatrefreshes.
33. watch – Repeats a command and updates the screen with only thechanges
34. login - Logging in
35. telnet - Connect to another machine
36. logout - Logging out
37. emacs - Using the emacs text editor
38. cp - Making a copy of a file
39. chmod - Controlling access to your files
40. cmp - Comparing two files
41. compress - Compress a file
42. pine Using Pine to send and receive email
43. mush - The mush electronic mail system
44. talk - Talk to another user
45. write - Write messages to another user
46. ftp - Transferring files with ftp
47. man - Manual pages
48. quota v Finding out your available disk space quota
49. ical - Using the Ical personal organizer
50. finger - Getting information about a user
51. who - Finding out who's logged on
52. lpr - Printing
53. lprm - Removing a print job
54. lpq - Checking the print queues
55. ps - Finding your processes
56. kill - Killing a process
57. nohup - Continuing a job after logout
58. nice - Changing the priority of a job
59. & - What is a background process?
60. Cntrl-z - Suspending a process
61. fg - Resuming a suspended process