Directory mode affects the leading character in the preview and lets symbolic X add execute where directory semantics make sense.
Numeric 0755
Symbolic u=rwx,g=rx,o=rx
ls -l preview -rwxr-xr-x
User Owner bits
7
Group Shared bits
5
Others Public bits
5
Absolute symbolic mode expects assignment clauses such as u=rw,g=r,o=. Use the operation field for incremental changes.
Custom
File result 0644 u=rw,g=r,o=r
Directory result 0755 u=rwx,g=rx,o=rx
Files commonly start from 0666 and directories from 0777. The umask removes bits from those bases rather than subtracting digits like a bar trick.
Generate a chmod mode to inspect the command, permission tables, operation effects, warnings, and normalized JSON payload.
ID

Operation Summary

# Operation Effect Result Action