missing file /usr/lib/libapt-pkg-libc6.10-6.so.4.8.1 (from apt package)

[Wesley Schwengle]

Binary package hint: apt

After today's updates (Lucid) I encountered a lot of issues, missing libs. Apt is one of them:

sudo aptitude update
aptitude: error while loading shared libraries: libapt-pkg-libc6.10-6.so.4.8: cannot open shared object file: No such file or directory

sudo aptitude safe-upgrade
aptitude: error while loading shared libraries: libapt-pkg-libc6.10-6.so.4.8: cannot open shared object file: No such file or directory

ldd $(which aptitude)
        linux-gate.so.1 => (0xb775c000)
        libapt-pkg-libc6.10-6.so.4.8 => not found
        libncursesw.so.5 => /lib/libncursesw.so.5 (0xb76fd000)
        libsigc-2.0.so.0 => /usr/lib/libsigc-2.0.so.0 (0xb76f5000)
        libcwidget.so.3 => /usr/lib/libcwidget.so.3 (0xb7637000)
        libept.so.0 => /usr/lib/libept.so.0 (0xb75c6000)
        libxapian.so.15 => /usr/lib/libxapian.so.15 (0xb747d000)
        libz.so.1 => /lib/libz.so.1 (0xb7468000)
        libpthread.so.0 => /lib/tls/i686/cmov/libpthread.so.0 (0xb744f000)
        libstdc++.so.6 => /usr/lib/libstdc++.so.6 (0xb735b000)
        libm.so.6 => /lib/tls/i686/cmov/libm.so.6 (0xb7335000)
        libgcc_s.so.1 => /lib/libgcc_s.so.1 (0xb7317000)
        libc.so.6 => /lib/tls/i686/cmov/libc.so.6 (0xb71d3000)
        libdl.so.2 => /lib/tls/i686/cmov/libdl.so.2 (0xb71cf000)
        /lib/ld-linux.so.2 (0xb775d000)
        libapt-pkg-libc6.10-6.so.4.8 => not found

apt-cache policy apt
apt-cache: error while loading shared libraries: libapt-pkg-libc6.10-6.so.4.8: cannot open shared object file: No such file or directory

I've installed debsums from Debian unstable after a tip from yofel on #ubuntu+1:

debsums apt | grep -v OK
debsums: missing file /usr/lib/libapt-pkg-libc6.10-6.so.4.8.1 (from apt package)

dpkg still works, so I should be able to resolve this matter with a new apt package.

/usr/lib$ lt | grep apt
-rw-r--r-- 1 root root 427880 2009-08-24 14:52 libraptor.so.1.2.0
-rw-r--r-- 1 root root 71548 2009-10-15 21:25 libapt-inst-libc6.10-6.so.1.1.0
lrwxrwxrwx 1 root root 30 2009-10-29 22:51 libapt-pkg-libc6.10-6.so.4.8 -> libapt-pkg-libc6.10-6.so.4.8.1
drwxr-xr-x 3 root root 4096 2009-10-29 22:51 apt
lrwxrwxrwx 1 root root 31 2009-10-29 22:51 libapt-inst-libc6.10-6.so.1.1 -> libapt-inst-libc6.10-6.so.1.1.0
lrwxrwxrwx 1 root root 18 2009-10-29 23:07 libraptor.so.1 -> libraptor.so.1.2.0

[Wesley Schwengle (wesleys)]

Downloaded apt from karmic, installed it, everything works again. Closing bug

[Danny Howard (dannyman)]

I am having these problems on my LTS distribution. Can you please explain where I can download the apt package? Googling things like "ubuntu apt download install" gets tutorials on how to use apt-get. Thanks!

-danny

[Prateek Karandikar (prateek.karandikar)]

Why is this bug closed? Unless the user intentionally does something evil, "apt is installed" is an invariant Ubuntu should maintain. Isn't it a bug that it ever got into an apt-is-not-installed state?

[Wesley Schwengle (wesleys)]

The bug was opened during the Lucid development cycle and got fixed after another update during the development process. Because more files where missing from various packages I closed the bug and marked it as invalid.