acl_copy_ext - Linux
Overview
acl_copy_ext is a command-line utility used to copy Access Control Lists (ACLs) between files and directories in extended ACL format. It provides finer-grained permissions management beyond the traditional user/group/other model.
Syntax
acl_copy_ext [-v] [-c] [-R] [-s] [-z octal-zeros] source-path... target-path
Options/Flags
-v
: Enable verbose output, displaying detailed information about the ACL copy process.-c
: Copy ACLs recursively, extending the operation to subdirectories and files within the source.-R
:--rwx
format flag. Convert the source ACL torwx
permissions when copying.-s
:--strip
flag. Strip ACLs from the source files instead of copying them to the target.-z octal-zeros
: Set the number of zero ACL entries to preserve during the copy. Defaults to 3.
Examples
Copy ACLs from source.txt to target.txt:
acl_copy_ext source.txt target.txt
Copy ACLs recursively from /src to /dst:
acl_copy_ext -c /src /dst
Convert ACLs to rwx
permissions before copying:
acl_copy_ext -R source.txt target.txt
Common Issues
- Permission denied: Ensure you have sufficient permissions to read and write the source and target paths.
- Invalid ACL: Verify that the ACLs on the source file are valid. Corrupted or malformed ACLs may cause errors during the copy process.
Integration
Combining with find
to copy ACLs for specific files:
find /path -name '*.txt' -exec acl_copy_ext -c {} /target \;
Related Commands
getfacl
: Retrieve file and directory ACLs.setfacl
: Set and modify file and directory ACLs.acl
: Manage Access Control Lists in a simplified text format.