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RESET SLAVE, bash edition
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Nearly every job advertisement for MySQL DBA positions asks for ’shell scripting’, so I decided to investigate what it is. I remembered some performance training, where I was told how forking is bad, and one should attempt to use shell features as much as possible (like, avoid paths to something, what can be used by builtin (e.g. don’t use /usr/bin/[, just pure [ instead )

I tried to automate one MySQL DBA task (reinitializing slave after relay log corruption or after copying in cloned dataset from other server) using just bash - and it kind of worked. From now on I can put 'Shell scripting' proudly on my resume :-)

Next step - learn JCL …

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