Some Linux shell commands

1. Date:show current date and time.

2. Cal:calendar.

3. df:to see the current amount of free space on your disk drives.

4. Free:show The amount of the free memory (if using this command at Cygwin, CROCPS package should has been installed Fir ST).

5. Exit:to end a terminal session.

6. Pwd:print name of current working directory. The working directory is the current directory, the standing in the of the file system.

7. Cd:change directory. Symbol "/" stands for the root directory of a file system. and the 中文版 name of the symbol is leading slash.

The directory in which most of your system ' s programs is installed Is/usr/bin.

The symbol "." (dot) refers to the current working directory and the ".." (both dot) refers to the parent directory of current working directory.

The symbol "./" which stands for the current directory can omitted. "./bin" is equal to "bin"

The symbol "~" refers to your home directory.

"$ CD" Changes to your home directory.

"$ CD-" changes to the previous directory.

"$ cd ~user_name" changes to the user_name ' s home directory.

Btw:linux supports space character in a file name. But it's not a recommended to does that. (the discussion about that)

8. ls:list Directory contents.

-l option list more info of files.

There is some more options, the can is found on the help page.

If the prefix of a file is a period, it means that the file is hidden. So it's well is listed. Except appending-a (--all) option to LS.

-d option list the info of the directory itself instead of its contents.

--color colorize the file names. You can redefine LS-to-LS--color IN/HOME/YOUR_NAME/.BASHRC to make the option for always setted. (a post about this)

9.

Some Linux shell commands