How to Use xargs Command in Linux: Syntax and Examples

The xargs command in Linux reads input from standard input and builds command lines to execute other commands with that input as arguments. It is useful to handle output from commands like find or echo and pass them as arguments to another command efficiently.

Syntax

The basic syntax of xargs is:

• xargs [options] [command]

Here:

• command is the command to run with the input as arguments (default is echo).
• options modify how xargs processes input and runs commands.

bash

xargs [options] [command]

Example

This example shows how to use xargs to delete files listed by find. It reads file names from find and passes them to rm to delete:

bash

find . -name '*.tmp' -print | xargs rm -f

Common Pitfalls

Common mistakes when using xargs include:

• Failing to handle file names with spaces or special characters, which can break argument parsing.
• Not using -0 option with find -print0 to safely handle all file names.
• Assuming xargs always runs the command once; it may run multiple times if input is large.

Correct way to handle spaces safely:

bash

find . -name '*.tmp' -print0 | xargs -0 rm -f

Quick Reference

Option	Description
-0	Input items are separated by null characters (safe for spaces and special characters)
-n	Use at most arguments per command line
-p	Prompt before running each command
-I	Replace occurrences of in the command with input
-t	Print the command before executing it

Key Takeaways

Use xargs to convert input from standard input into command arguments.

Always use -0 with find -print0 to safely handle file names with spaces.

You can control how many arguments xargs passes per command with -n.

Use -I to replace a placeholder in the command with input items.

Test commands with -t to see what xargs will run before execution.