Man Pages – Linux Manual Pages

chown – change file owner and group
USAGE
chown [OPTION]… OWNER[:[GROUP]] FILE…
chown [OPTION]… :GROUP FILE…
chown [OPTION]… –reference=RFILE FILE…

DESCRIPTION
This manual page documents the GNU version of chown. chown changes [...]

access – check user’s permissions for a file
USAGE
#include <unistd.h>

int access(const char *pathname, int mode);

DESCRIPTION
access() checks whether the process would be allowed to read, write or
test for [...]