chmod Calculator

Turn Linux file permissions into an octal chmod number, and back.

WhoRead (4)Write (2)Execute (1)
Owner
Group
Others
Or type a number:
755
Symbolic: rwxr-xr-x
Command: chmod 755 filename

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Frequently asked questions

What does chmod 755 mean?

755 means the owner can read, write and execute (7), while the group and others can read and execute but not write (5). It is the usual mode for scripts and directories.

What is the difference between 644 and 755?

644 (rw-r--r--) is for normal files: the owner edits, everyone reads. 755 (rwxr-xr-x) adds execute, which directories and programs need.

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