how does ldd command knows about depending shared objects
hi,
I would like to know how ldd command detects the depending shared object . I have gone through /bin/ldd script but did not got anything. I am new to linux .Please give me some idea. |
It probably reads the import table of the binary .. you may want to look at doco on the ELF file format
cheers |
Quote:
ldd is actually a script, so you can have a look yourself |
Hi,
I am sure you meant as your posting read, but just incase you meant show me an example of how it works: I use it to find out what library's are no longer installed after an update on my AMD64 which are needed for skype bit binary. SO I do the following: ldd /usr/bin/skype | grep 'not found' or without the filter: ldd /usr/bin/skype linux-gate.so.1 => (0xf77d7000) libasound.so.2 => /usr/lib32/libasound.so.2 (0xf76ea000) libXv.so.1 => /usr/lib32/libXv.so.1 (0xf76e5000) libXss.so.1 => /usr/lib32/libXss.so.1 (0xf76e1000) libSM.so.6 => /usr/lib32/libSM.so.6 (0xf76d9000) libICE.so.6 => /usr/lib32/libICE.so.6 (0xf76c1000) libXi.so.6 => /usr/lib32/libXi.so.6 (0xf76b4000) libXrender.so.1 => /usr/lib32/libXrender.so.1 (0xf76ab000) libXrandr.so.2 => /usr/lib32/libXrandr.so.2 (0xf76a4000) libfreetype.so.6 => /usr/lib32/libfreetype.so.6 (0xf762c000) libfontconfig.so.1 => /usr/lib32/libfontconfig.so.1 (0xf75fd000) libXext.so.6 => /usr/lib32/libXext.so.6 (0xf75ee000) libX11.so.6 => /usr/lib32/libX11.so.6 (0xf74d1000) libz.so.1 => /usr/lib32/libz.so.1 (0xf74bc000) libgthread-2.0.so.0 => /usr/lib32/libgthread-2.0.so.0 (0xf74b6000) libglib-2.0.so.0 => /lib32/libglib-2.0.so.0 (0xf73ed000) librt.so.1 => /lib32/librt.so.1 (0xf73e4000) libdl.so.2 => /lib32/libdl.so.2 (0xf73e0000) libpthread.so.0 => /lib32/libpthread.so.0 (0xf73c7000) libstdc++.so.6 => /usr/lib32/libstdc++.so.6 (0xf72d2000) libm.so.6 => /lib32/libm.so.6 (0xf72ab000) libgcc_s.so.1 => /usr/lib32/libgcc_s.so.1 (0xf728d000) libc.so.6 => /lib32/libc.so.6 (0xf7146000) libuuid.so.1 => /lib32/libuuid.so.1 (0xf7142000) libexpat.so.1 => /usr/lib32/libexpat.so.1 (0xf711c000) libxcb.so.1 => /usr/lib32/libxcb.so.1 (0xf7102000) libpcre.so.3 => /lib32/libpcre.so.3 (0xf70cf000) /lib/ld-linux.so.2 (0xf77d8000) libXau.so.6 => /usr/lib32/libXau.so.6 (0xf70cc000) libXdmcp.so.6 => /usr/lib32/libXdmcp.so.6 (0xf70c7000) |
thanks............but my doubt is still there .........not able to visualize
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