rmdir FILENAME rmdir Deletes the directory specified by FILENAME if that directory is empty. If it succeeds
setpriority WHICH,WHO,PRIORITY Sets the current priority for a process, a process group, or a user. (See setpriority(2).) Raises an exception
link OLDFILE,NEWFILE Creates a new filename linked to the old filename. Returns true for success, false otherwise.
stat FILEHANDLE stat EXPR stat DIRHANDLE stat Returns
getpwuid UID
ucfirst EXPR ucfirst Returns the value of EXPR with the first character in uppercase (titlecase in Unicode)
ref EXPR ref Returns a non-empty string if EXPR is a reference, the empty string otherwise. If EXPR is not
recv SOCKET,SCALAR,LENGTH,FLAGS Receives a message on a socket. Attempts to receive LENGTH characters of data into variable SCALAR from the
chown LIST Changes the owner (and group) of a list of files. The first two elements of the list must be the numeric uid and gid, in
getpriority WHICH,WHO Returns the current priority for a process, a process group, or a user. (See getpriority(2).) Will raise a fatal
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