Run Bash Online

Write and run Bash scripts in the browser, great for learning, practice, and quick checks.

Bash Script Editor

Output

Standard output (stdout)

 
  
 
Standard error (stderr)
 
 
   
 
 
  
 
Usage
 
     
  • Write Bash scripts in the left editor (optionally starting with #!/usr/bin/env bash).
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  • Click "Run Code" to execute the script online.
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  • The right panel shows output and errors.
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  • The green area is standard output (e.g., echo output).
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  • The red area shows runtime errors and messages.
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  • Execution info includes exit code and run status.
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  • Shortcut: Ctrl+Enter (Cmd+Enter on Mac).
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Bash Basics
 
 
 
Basic structure:
 

#!/usr/bin/env bash

echo "Hello, Bash!"

 
 
 
Variables and substitution:
 

name="Alice"

echo "Hello, $name"

echo "Files: " ${#*}  
 
 
 
  
 
Control Flow
 
 
 
Conditionals and loops:
 

x=3

if [ $x -gt 2 ]; then echo ">2"; else echo "<=2"; fi

for i in {1..3}; do echo $i; done

 
 
 
  
 
Functions and Script Organization
 
 
 
Function example:
 

greet() { echo "Hello, $1"; }

greet Bash

 
 
 
 
  
 
FAQ
 
 
 
Which Bash versions are supported?
 

Typically newer Bash versions are supported; the exact version depends on the backend environment.

 
 
 
Can I use external programs?
 

The runtime is sandboxed; only limited system commands are allowed and network access is unavailable.

 
 
 
Is there a time limit for execution?
 

Yes. To avoid infinite loops and ensure fair use, execution is time-limited and will be terminated on timeout.

 
 
 
Can I save scripts?
 

Online saving is not supported yet. Copy important scripts locally or save snippets in bookmarks/notes.

 
 
 
Is interactive input supported?
 

Interactive input (e.g., read) is not supported currently. For testing, hardcode input in the script or use fixed data instead.

 
 
 
  
 
Example scripts (click Run above)
 
 
 
1. Print 1..5
 

for i in {1..5}; do echo $i; done

 
 
 
2. Functions and parameters
 

greet() { echo "Hello, $1"; }

greet World