I install custom software in /usr/local/lib. How do I set the PATH and LD_LIBRARY_PATH in CentOS 6 system-wide to use /usr/local/lib. I realize there may be more than one way. What's the simplest and most standard way?


You can add it in /etc/bashrc, say, at the end.

export PATH=$PATH:/usr/local/lib
export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/usr/local/lib
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    While this works, for a proper installation, see @Olivier S's answer below. – csl Apr 21 '16 at 12:00
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    Also, OP probably wanted $PATH to refer to /usr/local/bin instead of /usr/local/lib. I agree that's not the original question, but custom software is standardly installed in /usr/local prefix with binaries in /usr/local/bin, libraries in /usr/local/lib, etc. – chutz Aug 22 '17 at 8:18

You can edit the file /etc/ld.so.conf and add your path /usr/local/lib to it or create a new file in /etc/ld.so.conf.d/ like /etc/ld.so.conf.d/usrlocal.conf and put only the following line in it


Then run ldconfig -v as root, and you're done.

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    +1: imho this is a much cleaner solution than the accepted one. – Blizz Oct 20 '12 at 12:53
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    Dare I call this method "proper"? – Tim Oct 29 '13 at 16:50
  • I had to run this as root (via sudo) – Code Abominator May 18 '18 at 5:07
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    Is this what you meant to say: "you can edit /etc/ld.so.conf and /usr/local/lib" ? – ThomasMcLeod Jun 26 '18 at 20:00
  • But after doing this I am getting error /usr/lib64/python2.6/site-packages/pycurl.so: undefined symbol: CRYPTO_set_locking_callback while using yum. What to do? – erTugRul Aug 29 '19 at 11:25

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