Article Title: newbie School: Basic knowledge of Linux operating system Shell. Linux is a technology channel of the IT lab in China. Including desktop applications, Linux system management, kernel research, embedded systems, open source, and other basic categories 1 cat/etc/shells
View the available shell on the computer
2. Write a shell and save it as firstscript.
#! /Bin/bash
# This is a test.
Echo-n Your current directory is:
Pwd
Echo $ HOME
Echo Your current directory is:
Pwd
# END. |
3. Run firstscript
$/Bin/bash firstscript
If the file cannot be found, use pwd to view the current directory.
$/Bin/bash pwd/firstscript
The current running result is displayed.
4. You can modify firstscript to execute
$ Chmod a + x firstscript
Enter $./firstscript.
The above shell is not exchanged, so we can interact as follows:
#! /Bin/sh
Echo-n Please input your ID:
Read id_var
Echo-n Please input your password:
Read password
Echo User ID = $ id_var
Echo password = $ password
If [$ password = "admin"]; then
Echo "password is right"
Else
Echo "password is wrong"
Fi |
Run the same command as before and test it by yourself.
