Some of the most frequently used commands in Linux are:1.ls: This command is used for directory listing.It is same as dir command in MSDOS.
Switches used with this command are:
| COMMAND | SWITCH | RESULT |
| ls | -a | displays all file name including those beginning with a dot |
| ls | -d .* | Only filenames beginning with a dot |
| ls | / | lists the contents of the root directory |
| ls | -l | prints long listing with description of permissions,links,ownership,size etc |
| ls | /dir | filenames inside dir |
| ls | -d /dir | only shows the description of dir not its content |
| ls | -R | recursive file list |
| ls | -t | Filenames sorted by last modification time |
| ls | -u | Filenames sorted by last access time |
| ls | -i | inode number |
| ls | -ltr | sorts listing chronologically form older to newer |
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