ldd的作用是打印可执行二进制文件运行时所需的链接库.如:
-bash-3.00$ ldd /export/home/oracle/oracle10g/product/10.2.0/db_1/bin/sqlplus
libsqlplus.so => /export/home/oracle/oracle10g/product/10.2.0/db_1/lib/libsqlplus.so
libclntsh.so.10.1 => /export/home/oracle/oracle10g/product/10.2.0/db_1/lib/libclntsh.so.10.1
libnnz10.so => /export/home/oracle/oracle10g/product/10.2.0/db_1/lib/libnnz10.so
libkstat.so.1 => /lib/64/libkstat.so.1
libnsl.so.1 => /lib/64/libnsl.so.1
libsocket.so.1 => /lib/64/libsocket.so.1
libgen.so.1 => /lib/64/libgen.so.1
libdl.so.1 => /lib/64/libdl.so.1
libsched.so.1 => /usr/lib/64/libsched.so.1
libc.so.1 => /lib/64/libc.so.1
librt.so.1 => /lib/64/librt.so.1
libaio.so.1 => /lib/64/libaio.so.1
libm.so.2 => /lib/64/libm.so.2
libthread.so.1 => /lib/64/libthread.so.1
libmp.so.2 => /lib/64/libmp.so.2
libmd.so.1 => /lib/64/libmd.so.1
libscf.so.1 => /lib/64/libscf.so.1
libdoor.so.1 => /lib/64/libdoor.so.1
libuutil.so.1 => /lib/64/libuutil.so.1
-bash-3.00$ ldd /export/home/oracle/oracle10g/product/10.2.0/db_1/bin/sqlplus
libsqlplus.so => /export/home/oracle/oracle10g/product/10.2.0/db_1/lib/libsqlplus.so
libclntsh.so.10.1 => /export/home/oracle/oracle10g/product/10.2.0/db_1/lib/libclntsh.so.10.1
libnnz10.so => /export/home/oracle/oracle10g/product/10.2.0/db_1/lib/libnnz10.so
libkstat.so.1 => /lib/64/libkstat.so.1
libnsl.so.1 => /lib/64/libnsl.so.1
libsocket.so.1 => /lib/64/libsocket.so.1
libgen.so.1 => /lib/64/libgen.so.1
libdl.so.1 => /lib/64/libdl.so.1
libsched.so.1 => /usr/lib/64/libsched.so.1
libc.so.1 => /lib/64/libc.so.1
librt.so.1 => /lib/64/librt.so.1
libaio.so.1 => /lib/64/libaio.so.1
libm.so.2 => /lib/64/libm.so.2
libthread.so.1 => /lib/64/libthread.so.1
libmp.so.2 => /lib/64/libmp.so.2
libmd.so.1 => /lib/64/libmd.so.1
libscf.so.1 => /lib/64/libscf.so.1
libdoor.so.1 => /lib/64/libdoor.so.1
libuutil.so.1 => /lib/64/libuutil.so.1
如果一个可执行二进制文件运行时提示找不到某某.so文件,就可以用ldd来看看这个二进制文件运行所需的链接库文件,然后再去看看LC_LIBRARY_PATH的值是否设置正确,去对应的lib目录下再去找找看.
本文转自leipei博客园博客，原文链接：http://www.cnblogs.com/leipei2352/archive/2011/06/09/2076167.html，如需转载请自行联系原作者
