我试图使用sed覆盖我的index.PHP文件,但我收到一个错误:
$sed -i 's@<head>@<head><script type="text/javascript" src="new.js"></script>@' index.PHP sed: Couldn't open temporary file ./sedmZNx8T: Permission denied
有谁知道如何解决这一问题?
解决方法
好像你在/ tmp目录上有权限问题. (如下所述,您在PHPshell中运行命令,因此TMP目录可以在/ tmp之外设置)
它应该看起来像:
$ls -ld /tmp drwxrwxrwx 333 root root 32768 12 oct. 03:13 /tmp/
说明
当使用-i标志调用sed时,sed在/ tmp目录中创建一个临时文件.
strace证明:
$strace -f -e trace=file sed -i 's/a/z/' /tmp/a execve("/bin/sed",["sed","-i","s/a/z/","/tmp/a"],[/* 94 vars */]) = 0 access("/etc/ld.so.preload",R_OK) = -1 ENOENT (No such file or directory) open("/etc/ld.so.cache",O_RDONLY|O_CLOEXEC) = 3 (...) open("/tmp/sedPSBTPG",O_RDWR|O_CREAT|O_EXCL,0600) = 4 rename("/tmp/sedPSBTPG","/tmp/a") = 0 +++ exited with 0 +++