ubuntu16.04
完整錯誤：
apt-get: relocation error: /usr/lib/x86_64-linux-gnu/libapt-private.so.0.0: symbol _ZlsRSoRKN3APT9PrettyPkgE version APTPKG_5.0 not defined in file libapt-pkg.so.5.0 with link time reference
或
apt: relocation error: /usr/lib/x86_64-linux-gnu/libapt-private.so.0.0: symbol _ZN3URIcvNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEB5cxx11Ev version APTPKG_5.0 not defined in file libapt-pkg.so.5.0 with link time reference
解決：
查看相關文件：
root@test1:/usr/lib/x86_64-linux-gnu# ll libapt-*
lrwxrwxrwx 1 root root 20 Aug 20 15:48 libapt-inst.so.2.0 -> libapt-inst.so.2.0.0
-rw-r--r-- 1 root root 51280 Aug 20 15:48 libapt-inst.so.2.0.0
lrwxrwxrwx 1 root root 19 Dec 14 10:02 libapt-pkg.so.5.0 -> libapt-pkg.so.5.0.2
-rw-r--r-- 1 root root 1854776 Oct 7 13:56 libapt-pkg.so.5.0.2
lrwxrwxrwx 1 root root 23 Oct 18 06:31 libapt-private.so.0.0 -> libapt-private.so.0.0.0
-rw-r--r-- 1 root root 337984 Oct 18 06:35 libapt-private.so.0.0.0
刪除或改名
root@test1:/usr/lib/x86_64-linux-gnu# mv libapt-inst.so.2.0{,.bak}
、、、、、、、、
從另一臺正常的主機拉取這些文件
問題主機：
root@test1:/usr/lib/x86_64-linux-gnu# uname -r
4.4.0-116-generic
正常主機：
root@test2:/usr/lib/x86_64-linux-gnu# uname -r
4.4.0-130-generic
root@test1:/usr/lib/x86_64-linux-gnu# scp [email protected]:/usr/lib/x86_64-linux-gnu/libapt-* ./ （ERROR不用管）
ERROR: ld.so: object 'libapt-pkg.so.5.0' from LD_PRELOAD cannot be preloaded (cannot open shared object file): ignored.
ERROR: ld.so: object 'libapt-pkg.so.5.0' from LD_PRELOAD cannot be preloaded (cannot open shared object file): ignored.
bash: warning: setlocale: LC_ALL: cannot change locale (zh_CN.UTF-8)
libapt-inst.so.2.0 100% 50KB 50.1KB/s 00:00
libapt-inst.so.2.0.0 100% 50KB 50.1KB/s 00:00
libapt-pkg.so.5.0 100% 1475KB 1.4MB/s 00:00
libapt-pkg.so.5.0.0 100% 1475KB 1.4MB/s 00:00
libapt-private.so.0.0 100% 330KB 330.1KB/s 00:00
libapt-private.so.0.0.0 100% 330KB 330.1KB/s 00:00
結果：
root@test1:/usr/lib/x86_64-linux-gnu# ll libapt-*
-rw-r--r-- 1 root root 51256 Dec 14 10:07 libapt-inst.so.2.0 《==請手動改成軟連接
-rw-r--r-- 1 root root 51256 Dec 14 10:07 libapt-inst.so.2.0.0
-rw-r--r-- 1 root root 51280 Aug 20 15:48 libapt-inst.so.2.0.0.bak
lrwxrwxrwx 1 root root 20 Aug 20 15:48 libapt-inst.so.2.0.bak -> libapt-inst.so.2.0.0
-rw-r--r-- 1 root root 1510376 Dec 14 10:07 libapt-pkg.so.5.0 《==請手動改成軟連接
-rw-r--r-- 1 root root 1510376 Dec 14 10:07 libapt-pkg.so.5.0.0
-rw-r--r-- 1 root root 1854776 Oct 7 13:56 libapt-pkg.so.5.0.2
lrwxrwxrwx 1 root root 19 Dec 14 10:02 libapt-pkg.so.5.0.bak -> libapt-pkg.so.5.0.2
-rw-r--r-- 1 root root 337984 Dec 14 10:07 libapt-private.so.0.0 《==請手動改成軟連接
-rw-r--r-- 1 root root 337984 Dec 14 10:07 libapt-private.so.0.0.0
-rw-r--r-- 1 root root 337984 Oct 18 06:35 libapt-private.so.0.0.0.bak
lrwxrwxrwx 1 root root 23 Oct 18 06:31 libapt-private.so.0.0.bak -> libapt-private.so.0.0.0
恢復正常：
root@test1:/usr/lib/x86_64-linux-gnu# apt
apt 1.2.15 (amd64)
Usage: apt [options] command
apt is a commandline package manager and provides commands for
searching and managing as well as querying information about packages.
It provides the same functionality as the specialized APT tools,
like apt-get and apt-cache, but enables options more suitable for
interactive use by default.