WP_Filesystem_SSH2::chmod( string $file, int|false $mode = false, bool $recursive = false ): bool

360	public function chmod( $file, $mode = false, $recursive = false ) {361		if ( ! $this->exists( $file ) ) {362			return false;363		}364 365		if ( ! $mode ) {366			if ( $this->is_file( $file ) ) {367				$mode = FS_CHMOD_FILE;368			} elseif ( $this->is_dir( $file ) ) {369				$mode = FS_CHMOD_DIR;370			} else {371				return false;372			}373		}374 375		if ( ! $recursive || ! $this->is_dir( $file ) ) {376			return $this->run_command( sprintf( 'chmod %o %s', $mode, escapeshellarg( $file ) ), true );377		}378 379		return $this->run_command( sprintf( 'chmod -R %o %s', $mode, escapeshellarg( $file ) ), true );380	}