30 Bash Script Examples

1. How do I create a simple bash script?
2. How do I write a bin bash script?
3. What can I do with bash scripting?
4. What is ## in shell script?
5. How do you write a simple script?
6. How do you name a bash script?
7. How do I run a bash script?
8. Is bash script a programming language?
9. How do I run a shell script?
10. Is bash difficult?
11. Should I use Bash or Python?
12. What's the difference between Bash and Shell?

How do I create a simple bash script?

How to Create/Write a Simple/Sample Linux Shell/Bash Script

1. Step 1: Choose Text Editor. Shell scripts are written using text editors. ...
2. Step 2: Type in Commands and Echo Statements. Start to type in basic commands that you would like the script to run. ...
3. Step 3: Make File Executable. Now that the file has been saved, it needs to be made executable. ...
4. Step 4: Run the Shell Script.

How do I write a bin bash script?

To create a bash script, you place #!/bin/bash at the top of the file. To execute the script from the current directory, you can run ./scriptname and pass any parameters you wish. When the shell executes a script, it finds the #!/path/to/interpreter .

What can I do with bash scripting?

Bash scripts can be used for various purposes, such as executing a shell command, running multiple commands together, customizing administrative tasks, performing task automation etc. So knowledge of bash programming basics is important for every Linux user.

What is ## in shell script?

1 Answer. 1. 19. In bash , it removes a prefix pattern. Here, it's basically giving you everything after the last path separator / , by greedily removing the prefix */ , any number of characters followed by / ): pax> fspec=/path/to/some/file.txt ; echo $fspec##*/ file.txt.

How do you write a simple script?

How to Write a Script – Top 10 Tips

1. Finish your script.
2. Read along as you watch.
3. Inspiration can come from anywhere.
4. Make sure your characters want something.
5. Show. Don't tell.
6. Write to your strengths.
7. Starting out - write about what you know.
8. Free your characters from cliché

How do you name a bash script?

In bash you can get the script file name using $0 . Generally $1 , $2 etc are to access CLI arguments. Similarly $0 is to access the name which triggers the script(script file name). If you invoke the script with path like /path/to/script.sh then $0 also will give the filename with path.

How do I run a bash script?

Make a Bash Script Executable

1. 1) Create a new text file with a . sh extension. ...
2. 2) Add #!/bin/bash to the top of it. This is necessary for the “make it executable” part.
3. 3) Add lines that you'd normally type at the command line. ...
4. 4) At the command line, run chmod u+x YourScriptFileName.sh. ...
5. 5) Run it whenever you need!

Is bash script a programming language?

Bash is a powerful programming language, one perfectly designed for use on the command line and in shell scripts. This three-part series explores using Bash as a command-line interface (CLI) programming language.

How do I run a shell script?

Steps to write and execute a script

1. Open the terminal. Go to the directory where you want to create your script.
2. Create a file with . sh extension.
3. Write the script in the file using an editor.
4. Make the script executable with command chmod +x <fileName>.
5. Run the script using ./<fileName>.

Is bash difficult?

It's not necessarily hard to learn, but it's hard to master. Very true. More, it isn't worth the effort to master. I used to use bash for everything, but if you are using Bash too much these days, you are doing something wrong.

Should I use Bash or Python?

Python is highly efficient programming language used for general-purpose programming. Bash is not a programming language, it is a command-line interpreter. Bash is a software replacement for the original Bourne shell. Python is easy, simple and powerful language.

What's the difference between Bash and Shell?

Shell is an interface between a user and OS to access to an operating system's services. It can be either GUI or CLI (Command Line interface). sh (Bourne shell) is a shell command-line interpreter, for Unix/Unix-like operating systems. ... Bash (Bourne again shell) is a shell replacement for the Bourne shell.