ldd工具的使用

ldd工具是一個在linux和unix作業系統裡用來顯示一個執行檔案或共享庫的動態依賴資訊的。

ldd工具在解決類似error while loading shared libraries: libclntsh.so.9.0等錯誤是很好用。

下面是這個工具的用法：

[oracle@filesvr1 oracle]$ man ldd

LDD(1) LDD(1)

NAME

ldd - print shared library dependencies

SYNOPSIS

ldd [OPTION]... FILE...

DESCRIPTION

ldd prints the shared libraries required by each program or shared

library specified on the command line.

OPTIONS

--version

Print the version number of ldd.

-v --verbose

Print all information, including e.g. symbol versioning informa-

tion.

-d --data-relocs

Perform. relocations and report any missing objects (ELF only).

-r --function-relocs

Perform relocations for both data objects and functions, and

report any missing objects or functions (ELF only).

--help Usage information.

BUGS

ldd does not work on a.out shared libraries.

ldd does not work with some extremely old a.out programs which were

built before ldd support was added to the compiler releases. If you

use ldd on one of these programs, the program will attempt to run with

argc = 0 and the results will be unpredictable.

AUTHOR

Roland McGrath and Ulrich Drepper.

SEE ALSO

ldconfig(8), ld.so(8).

30 October 2000 LDD(1)

[oracle@filesvr1 oracle]$ ldd /opt/oracle/product/9.2.0/bin/sqlplus

libclntsh.so.9.0 => /opt/oracle/product/9.2.0/lib/libclntsh.so.9.0 (0xb6c19000)

libwtc9.so => /opt/oracle/product/9.2.0/lib/libwtc9.so (0xb6c16000)

libdl.so.2 => /lib/libdl.so.2 (0xb6c13000)

libm.so.6 => /lib/tls/libm.so.6 (0xb6bf1000)

libpthread.so.0 => /lib/tls/libpthread.so.0 (0xb6be0000)

libnsl.so.1 => /lib/libnsl.so.1 (0xb6bcb000)

libc.so.6 => /lib/tls/libc.so.6 (0xb6a93000)

/lib/ld-linux.so.2 => /lib/ld-linux.so.2 (0xb75eb000)

-v選項包括版本資訊

-v --verbose

Print all information, including e.g. symbol versioning informa-

tion.

[oracle@filesvr1 oracle]$ ldd -v /opt/oracle/product/9.2.0/bin/sqlplus

libclntsh.so.9.0 => /opt/oracle/product/9.2.0/lib/libclntsh.so.9.0 (0xb6c19000)

libwtc9.so => /opt/oracle/product/9.2.0/lib/libwtc9.so (0xb6c16000)

libdl.so.2 => /lib/libdl.so.2 (0xb6c13000)

libm.so.6 => /lib/tls/libm.so.6 (0xb6bf1000)

libpthread.so.0 => /lib/tls/libpthread.so.0 (0xb6be0000)

libnsl.so.1 => /lib/libnsl.so.1 (0xb6bcb000)

libc.so.6 => /lib/tls/libc.so.6 (0xb6a93000)

/lib/ld-linux.so.2 => /lib/ld-linux.so.2 (0xb75eb000)

Version information:

/opt/oracle/product/9.2.0/bin/sqlplus:

libpthread.so.0 (GLIBC_2.0) => /lib/tls/libpthread.so.0

libc.so.6 (GLIBC_2.0) => /lib/tls/libc.so.6

/opt/oracle/product/9.2.0/lib/libclntsh.so.9.0:

libdl.so.2 (GLIBC_2.1) => /lib/libdl.so.2

libdl.so.2 (GLIBC_2.0) => /lib/libdl.so.2

libm.so.6 (GLIBC_2.1) => /lib/tls/libm.so.6

libm.so.6 (GLIBC_2.0) => /lib/tls/libm.so.6

libpthread.so.0 (GLIBC_2.2) => /lib/tls/libpthread.so.0

libpthread.so.0 (GLIBC_2.0) => /lib/tls/libpthread.so.0

libpthread.so.0 (GLIBC_2.1) => /lib/tls/libpthread.so.0

libc.so.6 (GLIBC_2.1.3) => /lib/tls/libc.so.6

libc.so.6 (GLIBC_2.2) => /lib/tls/libc.so.6

libc.so.6 (GLIBC_2.1.2) => /lib/tls/libc.so.6

libc.so.6 (GLIBC_2.1) => /lib/tls/libc.so.6

libc.so.6 (GLIBC_2.0) => /lib/tls/libc.so.6

/opt/oracle/product/9.2.0/lib/libwtc9.so:

libc.so.6 (GLIBC_2.0) => /lib/tls/libc.so.6

/lib/libdl.so.2:

libc.so.6 (GLIBC_2.3) => /lib/tls/libc.so.6

libc.so.6 (GLIBC_2.1.3) => /lib/tls/libc.so.6

libc.so.6 (GLIBC_2.1) => /lib/tls/libc.so.6

libc.so.6 (GLIBC_PRIVATE) => /lib/tls/libc.so.6

libc.so.6 (GLIBC_2.0) => /lib/tls/libc.so.6

ld-linux.so.2 (GLIBC_PRIVATE) => /lib/ld-linux.so.2

/lib/tls/libm.so.6:

ld-linux.so.2 (GLIBC_PRIVATE) => /lib/ld-linux.so.2

libc.so.6 (GLIBC_2.1.3) => /lib/tls/libc.so.6

libc.so.6 (GLIBC_2.0) => /lib/tls/libc.so.6

/lib/tls/libpthread.so.0:

ld-linux.so.2 (GLIBC_2.1) => /lib/ld-linux.so.2

ld-linux.so.2 (GLIBC_PRIVATE) => /lib/ld-linux.so.2

libc.so.6 (GLIBC_2.1.3) => /lib/tls/libc.so.6

libc.so.6 (GLIBC_2.1) => /lib/tls/libc.so.6

libc.so.6 (GLIBC_2.3.2) => /lib/tls/libc.so.6

libc.so.6 (GLIBC_2.0) => /lib/tls/libc.so.6

libc.so.6 (GLIBC_2.2) => /lib/tls/libc.so.6

libc.so.6 (GLIBC_PRIVATE) => /lib/tls/libc.so.6

/lib/libnsl.so.1:

libc.so.6 (GLIBC_2.1.3) => /lib/tls/libc.so.6

libc.so.6 (GLIBC_2.2) => /lib/tls/libc.so.6

libc.so.6 (GLIBC_2.2.3) => /lib/tls/libc.so.6

libc.so.6 (GLIBC_2.0) => /lib/tls/libc.so.6

libc.so.6 (GLIBC_2.1) => /lib/tls/libc.so.6

/lib/tls/libc.so.6:

ld-linux.so.2 (GLIBC_2.3) => /lib/ld-linux.so.2

ld-linux.so.2 (GLIBC_2.1) => /lib/ld-linux.so.2

ld-linux.so.2 (GLIBC_2.0) => /lib/ld-linux.so.2

ld-linux.so.2 (GLIBC_PRIVATE) => /lib/ld-linux.so.2

--The End--

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ldd工具的使用

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