Error Symptom:
when you run $mysql -u root -p command in the linux you get an error message ” mysql: symbol lookup error: /usr/local/lib/libreadline.so.6: undefined symbol: UP”
Solution:
Step 1: Login as root
Step 2: Go to folder path #cd/usr/local/lib
there was a bunch of readline libs in there (libreadline.so.BLAH-BLAH) so i:
Step3: Create a directory #mkdir temp
Step 4: Move the files # mv /usr/local/lib/libreadline* temp
Step 5: #ldconfig
Step 6: #apt-get update
mysql: symbol lookup error: /usr/local/lib/libreadline.so.6: undefined symbol: UP
原文：http://www.cnblogs.com/ShaunChen/p/5774706.html