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chmod calculator
Unix file permissions calculator
Numeric
644
=
Symbolic
-rw-r--r--
Owner
r
w
x
6
Group
r
w
x
4
Other
r
w
x
4
Enter manually
Popular values
755
Default for directories
644
Default for files
700
Owner only
777
Full access for everyone (dangerous!)
600
Private file
400
Read-only for owner