| Command | Switch | Result |
| cp | source destination | If destination file does not exists then it will be created before copying other wise overwritten. |
| cp | src1 src2 src3 destination | copy more than one files into a single destination |
| cp | src* destination | copy all files beginning with src into destination |
| cp | -i src destination | warns user before overwriting |
| cp | -R srcdir destination | Copy directory structure |
| Command | Switch | Result |
| cd | ~ username | Switches home directory of user |
| cd | Switches to home directory of current user | |
| cd | ~ | toggles between current and previous directory |
| cd | Desktop / | Changes to relative directory desktop |
| cd | .. | Changes to one level up in the directory tree |
| cd | ../.. | Changes to two level up in the directory tree |
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.
| 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 |
