ldd

ldd命令用于判断某个可执行的 binary 档案含有什么动态函式库

用法：

[root@localhost ~]# ldd $(which /usr/local/nginx/sbin/nginx) 
linux-vdso.so.1 => (0x00007fff4e1ff000)
libpthread.so.0 => /lib64/libpthread.so.0 (0x00007ff526a72000)
libcrypt.so.1 => /lib64/libcrypt.so.1 (0x00007ff52683b000)
libpcre.so.1 => not found
libcrypto.so.10 => /usr/lib64/libcrypto.so.10 (0x00007ff526457000)
libz.so.1 => /lib64/libz.so.1 (0x00007ff526241000)
libc.so.6 => /lib64/libc.so.6 (0x00007ff525eac000)
/lib64/ld-linux-x86-64.so.2 (0x00007ff526c95000)
libfreebl3.so => /lib64/libfreebl3.so (0x00007ff525c35000)
libdl.so.2 => /lib64/libdl.so.2 (0x00007ff525a31000)