Linux常用命令-ldd

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命令

ldd

描述

显示二进制文件依赖的共享库列表

用法

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ldd [OPTION]... FILE...

选项

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Options:
  -d, --data-relocs       执行重定位和报告任何丢失的对象
  -r, --function-relocs   执行数据对象和函数的重定位,并且报告任何丢失的对象和函数
  -u, --unused            显示未使用的直接依赖
  -v, --verbose           显示所有信息

注意

无

示例

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# ldd命令是一个shell脚本
$ file /usr/bin/ldd
/usr/bin/ldd: Bourne-Again shell script, ASCII text executable
# 显示cp命令依赖的库文件
$ ldd /usr/bin/cp
        linux-vdso.so.1 =>  (0x00007ffc78f5e000)
        libselinux.so.1 => /lib64/libselinux.so.1 (0x00007ff3efd68000)
        libacl.so.1 => /lib64/libacl.so.1 (0x00007ff3efb5f000)
        libattr.so.1 => /lib64/libattr.so.1 (0x00007ff3ef95a000)
        libc.so.6 => /lib64/libc.so.6 (0x00007ff3ef58c000)
        libpcre.so.1 => /lib64/libpcre.so.1 (0x00007ff3ef32a000)
        libdl.so.2 => /lib64/libdl.so.2 (0x00007ff3ef126000)
        /lib64/ld-linux-x86-64.so.2 (0x00007ff3eff8f000)
        libpthread.so.0 => /lib64/libpthread.so.0 (0x00007ff3eef0a000)
$ ldd -u /usr/bin/cp
Unused direct dependencies:
        /lib64/libselinux.so.1
        /lib64/libacl.so.1
        /lib64/libattr.so.1
$ ldd -v /usr/bin/cp
        linux-vdso.so.1 =>  (0x00007ffdda493000)
        libselinux.so.1 => /lib64/libselinux.so.1 (0x00007f145d826000)
        libacl.so.1 => /lib64/libacl.so.1 (0x00007f145d61d000)
        libattr.so.1 => /lib64/libattr.so.1 (0x00007f145d418000)
        libc.so.6 => /lib64/libc.so.6 (0x00007f145d04a000)
        libpcre.so.1 => /lib64/libpcre.so.1 (0x00007f145cde8000)
        libdl.so.2 => /lib64/libdl.so.2 (0x00007f145cbe4000)
        /lib64/ld-linux-x86-64.so.2 (0x00007f145da4d000)
        libpthread.so.0 => /lib64/libpthread.so.0 (0x00007f145c9c8000)

        Version information:
        /usr/bin/cp:
                libattr.so.1 (ATTR_1.1) => /lib64/libattr.so.1
                libacl.so.1 (ACL_1.0) => /lib64/libacl.so.1
                libc.so.6 (GLIBC_2.3) => /lib64/libc.so.6
                libc.so.6 (GLIBC_2.14) => /lib64/libc.so.6
                libc.so.6 (GLIBC_2.4) => /lib64/libc.so.6
                libc.so.6 (GLIBC_2.17) => /lib64/libc.so.6
                libc.so.6 (GLIBC_2.6) => /lib64/libc.so.6
                libc.so.6 (GLIBC_2.3.4) => /lib64/libc.so.6
                libc.so.6 (GLIBC_2.2.5) => /lib64/libc.so.6
        /lib64/libselinux.so.1:
                libdl.so.2 (GLIBC_2.2.5) => /lib64/libdl.so.2
                ld-linux-x86-64.so.2 (GLIBC_2.3) => /lib64/ld-linux-x86-64.so.2
                ...