How to Use the Find Command in Linux: Syntax and Examples

The find command in Linux searches for files and directories based on conditions like name, type, size, or modification time. You run it with a starting directory and options, for example, find /home -name '*.txt' finds all text files in /home and its subfolders.

Syntax

The basic syntax of the find command is:

• find [path] [options] [expression]

path: Where to start searching (e.g., /, . for current directory).

options: Control how find works (e.g., -type to specify file type).

expression: Conditions to match files (e.g., -name to match file names).

bash

find [path] [options] [expression]

Example

This example finds all files ending with .log in the current directory and its subdirectories:

bash

find . -type f -name '*.log'

Output

./system.log
./app/error.log

Common Pitfalls

Common mistakes include:

• Not quoting patterns with wildcards, causing shell expansion before find runs.
• Using incorrect paths or forgetting to specify a path, which defaults to current directory.
• Confusing -name (case-sensitive) with -iname (case-insensitive).

Example of wrong and right usage:

bash

# Wrong: shell expands *.txt before find runs
find . -name *.txt

# Right: quotes prevent shell expansion
find . -name '*.txt'

Quick Reference

Option	Description	Example
-name 'pattern'	Find files matching name pattern	find . -name '*.txt'
-type [f|d]	Find files (f) or directories (d)	find /tmp -type d
-size [+/-]N[c]	Find files larger (+) or smaller (-) than N blocks (default) or bytes if 'c' is used	find . -size +100k
-mtime [+/-]N	Find files modified N days ago	find . -mtime -7
-iname 'pattern'	Case-insensitive name match	find . -iname '*.jpg'
-exec command {} \;	Run command on each found file	find . -name '*.sh' -exec chmod +x {} \;

Key Takeaways

Use find with a starting path and conditions to locate files or directories.

Always quote patterns with wildcards to avoid shell expansion errors.

Use -type to specify file or directory searches.

Combine -exec to run commands on found files.

Remember -name is case-sensitive; use -iname for case-insensitive matching.