Linux Basic Admin Tools

chmod permissions files

• Explicitlly change file access permissions

Examples:

chmod +x file1

• changes file1 to have executable rights for user/group/other

chmod u+r,g-w,o-rw file2

• changes file2 to add read rights for user, remove write rights for group and remove both read and write rights for others

chmod 550 dir2

• changes dir2 to have only read and execute rights for user and group but no rights for other