Shell Note 2

1. Shell types: Bourne shell, Bourne Again shell, C shell, Korn shell, Perl shell

2. Users can choose their favorite shell (specified when the system administrator creates an account for the user), and in the last field of the/etc/passwd file, you can see the name of the shell that the user is currently using.

3. Use the grep command to view the/etc/passwd file, showing the shell used by the current logged-on user, with the following format:

   #grep $LOGNAME/etc/passwd

4. Bourne Again Shell, which is bash, is the default shell for Linux and the most popular kind of shell.

5. Bash provides the command history, command completion, command editing and other functions.

6. To start bash, just type bash at the command line and press ENTER.

7. Korn Shell, with strong job control ability, such as suspend, background execution, wake up, termination, etc., also provides the window function.

Shell Note 2