[root@localhost faxing84]# find . -type f -name "*.php" | xargs tar zcvpf fxw.tar.gz tar (child): fxw.tar.gz: Cannot open: Permission denied tar (child): Error is not recoverable: exiting now ./pic1.php ./bak/command/mkWyrd.php ./bak/command/background_job_wyrd.php ./bak/vendor/ThinkPHP/Extend/Tool/Requirements-Checker/checker.php xargs: tar: terminated by signal 13