我试图释放空间，却毫无头绪地将 /usr/lib64/ 移动到“/srv/maraba_ssd_scratch/apelin/root_files/usr_lib64”。我要做的下一件事是在 usr 中为 lib64 创建一个符号链接以指向 /srv/maraba_ssd_scratch/apelin/root_files/usr_lib64 但很快就发现了 ELF 的问题。
我最大的问题是我使用 sudo 来完成所有这些操作。我根据其他帖子弄清楚了如何发出命令，并且可以执行以下操作：
$ LD_LIBRARY_PATH=/srv/maraba_ssd_scratch/apelin/root_files/usr_lib64 /srv/maraba_ssd_scratch/apelin/root_files/usr_lib64/ld-linux-x86-64.so.2 /usr/bin/echo a
a
bash: /usr/bin/basename: /lib64/ld-linux-x86-64.so.2: bad ELF interpreter: No such file or directory
但是要恢复 /usr/lib64 我需要 root 权限。我尝试了 sudo 但失败了：
LD_LIBRARY_PATH=/srv/maraba_ssd_scratch/apelin/root_files/usr_lib64 /srv/maraba_ssd_scratch/apelin/root_files/usr_lib64/ld-linux-x86-64.so.2 /usr/bin/sudo /usr/bin/ln -s /srv/maraba_ssd_scratch/apelin/root_files/usr_lib64 lib64
/usr/bin/sudo: error while loading shared libraries: /usr/bin/sudo: cannot open shared object file: Permission denied
bash: /usr/bin/basename: /lib64/ld-linux-x86-64.so.2: bad ELF interpreter: No such file or directory
当我尝试 su 时，我也收到错误：
$ LD_LIBRARY_PATH=/srv/maraba_ssd_scratch/apelin/root_files/usr_lib64 /srv/maraba_ssd_scratch/apelin/root_files/usr_lib64/ld-linux-x86-64.so.2 /usr/bin/su root
su: Module is unknown
bash: /usr/bin/basename: /lib64/ld-linux-x86-64.so.2: bad ELF interpreter: No such file or directory
我相信 su 错误可能与我的 /etc/pam.d/su 文件有关：
#%PAM-1.0
auth sufficient pam_rootok.so
# Uncomment the following line to implicitly trust users in the "wheel" group.
#auth sufficient pam_wheel.so trust use_uid
# Uncomment the following line to require a user to be in the "wheel" group.
#auth required pam_wheel.so use_uid
auth substack system-auth
auth include postlogin
account sufficient pam_succeed_if.so uid = 0 use_uid quiet
account include system-auth
password include system-auth
session include system-auth
session include postlogin
session optional pam_xauth.so
bash: /usr/bin/basename: /lib64/ld-linux-x86-64.so.2: bad ELF interpreter: No such file or directory
pam_rootok.so 位于移动的 lib64 目录中。
除了使用实时磁盘启动之外，还有其他人有什么想法吗？我没有busybox。
PS 应该提到我通过 vncserver 有 GUI。有没有办法从 GUI 调用 root 命令？ CentOS 7、Gnome2。