| Read (r) | Write (w) | Execute (x) | |
|---|---|---|---|
| Owner | |||
| Group | |||
| Other |
Octal
644
Symbolic
rw-r--r--
Command examples
$ chmod 644 filename$ chmod u=rw,g=r,o=r filenameHow to Use
Toggle read, write, execute checkboxes for owner, group, and other. The octal and symbolic notation update instantly. Or enter an octal value.
Frequently Asked Questions
What is chmod?
chmod (change mode) is a Unix/Linux command to set file permissions. It controls who can read, write, or execute a file.
What does 755 mean?
755 = owner can read/write/execute (7), group can read/execute (5), others can read/execute (5). Common for directories and scripts.
What is the difference between 644 and 755?
644 allows owner read/write, others read-only (files). 755 adds execute permission (directories, scripts).