4 computing_shell_scripts

Blake Leverington edited this page 2022-05-05 13:26:09 +02:00

Table of Contents

• Running scripts from the shell
• Bourne-Again SHell (BASH)
• variables in a bash script

Back to: Home Computing Wiki Page

---

Running scripts from the shell

There are several flavours of Linux shells. Bash is one of the most common.

Bourne-Again SHell (BASH)

• Bash scripting cheatsheet
• 30 Bash script examples
• Bash Scripting Tutorial for beginners

variables in a bash script

• $0 - The name of the Bash script.
• $1 - $9 - The first 9 arguments to the Bash script. (As mentioned above.)
• $# - How many arguments were passed to the Bash script.
• $ - All the arguments supplied to the Bash script.
• $ - The exit status of the most recently run process.

•  - The process ID of the current script.
  

• $USER - The username of the user running the script.
• $HOSTNAME - The hostname of the machine the script is running on.
• $SECONDS - The number of seconds since the script was started.
• $RANDOM - Returns a different random number each time is it referred to.