/sbin/ldconfig is needed by

zuiaiman

libra@libra-machine:~/share$ sudo rpm -ivh libstdc++-4.4.7-18.el6.i686.rpm
rpm: RPM should not be used directly install RPM packages, use Alien instead!
rpm: However assuming you know what you are doing...
warning: libstdc++-4.4.7-18.el6.i686.rpm: Header V3 RSA/SHA1 Signature, key ID c105b9de: NOKEY
error: Failed dependencies:
        /sbin/ldconfig is needed by libstdc++-4.4.7-18.el6.i686
        glibc >= 2.10.90-7 is needed by libstdc++-4.4.7-18.el6.i686
        ld-linux.so.2 is needed by libstdc++-4.4.7-18.el6.i686
        ld-linux.so.2(GLIBC_2.3) is needed by libstdc++-4.4.7-18.el6.i686
        libc.so.6 is needed by libstdc++-4.4.7-18.el6.i686
        libc.so.6(GLIBC_2.0) is needed by libstdc++-4.4.7-18.el6.i686
        libc.so.6(GLIBC_2.1) is needed by libstdc++-4.4.7-18.el6.i686
        libc.so.6(GLIBC_2.1.3) is needed by libstdc++-4.4.7-18.el6.i686
        libc.so.6(GLIBC_2.2) is needed by libstdc++-4.4.7-18.el6.i686
        libc.so.6(GLIBC_2.3) is needed by libstdc++-4.4.7-18.el6.i686
        libc.so.6(GLIBC_2.3.2) is needed by libstdc++-4.4.7-18.el6.i686
        libc.so.6(GLIBC_2.4) is needed by libstdc++-4.4.7-18.el6.i686
        libm.so.6 is needed by libstdc++-4.4.7-18.el6.i686
        libm.so.6(GLIBC_2.0) is needed by libstdc++-4.4.7-18.el6.i686
        rtld(GNU_HASH) is needed by libstdc++-4.4.7-18.el6.i686
请问这个问题怎么解决啊？实在是找不到办法了。 为什么会找不到 /sbin/ldconfig 呢
libra@libra-machine:~/share$ echo $PATH
/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games