Sounds like a useful book :-)
I do really like to have a reference available at times though, apropos is less useful if you can't remember what the hell your looking for !
I've never had a lot of problems alternating between BSDs or Linux Distros aside from a few -switches that differ.
Which is probably why my ~/.zshrc has non-portable aliases adopted to the current operating system, defines common (fairly portable) aliases, handles multiple Bourne-Compatible shells, and sources a ~/.shrc.local for site specifics.
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My Journal
Thou shalt check the array bounds of all strings (indeed, all arrays), for surely where thou typest ``foo'' someone someday shall type ``supercalifragilisticexpialidocious''.
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