Just a list of Linux command line tools

names-of-some-linux-commands.md

Names of some Linux Commands

1. whatis
2. help
3. man
4. apropos
5. whoami
6. which
7. date
8. history
9. find
10. pwd
11. cd
12. ls
13. tree
14. touch
15. file
16. cat
17. less
18. more
19. cp
20. mv
21. rm
22. mkdir
23. alias
24. unalias
25. exit
26. clear
27. echo
28. ">" [stdout redirection to file] (replaces the file's content)
29. ">>" [stdout redirection to file] (appends to the file's content)
30. "<" [stdin redirection to programme] (sends the file's content as stdin)
31. "2>" [stderr redirection to file] (replaces the file's content with the stderr)
32. "&>" [stderr & stdout redirection to file] (redirects both stderr and stdout)
33. "|" (e.g. pipe) [redirects stdout of a prgramm to another programm as stdin]
34. tee
35. env
36. "echo $VAR_NAME" [print VAR_NAME's value]
37. cut
38. paste
39. head
40. tail
41. expand
42. unexpand
43. join
44. split
45. sort
46. tr
47. uniq
48. wc
49. nl
50. grep
51. vi
52. vim
53. emacs

   

File descriptors

Syntax: ls non-exixting-dir/ [0|1|2]> out.txt

Useful for redirection of I/O streams

I/O Stream Name	Number
stdin	0
stdout	1
stderr	2

   

whatis

Display one-line manual page descriptions

help

Display information about builtin commands.