Sams Teach Yourself Shell Programming in 24 Hours, Second Edition

Hour 23

1:	Write a function called getCharCount that prints the number of characters in a file. Use wc to obtain the character count. Linux, FreeBSD, and SunOS (not Solaris), use the -c option for wc, whereas other versions of UNIX use the -m option. Feel free to use the function getOSName.
A1:	A possible implementation is getCharCount() { case `getOSName` in bsd|sunos|linux) WCOPT="-c" ;; *) WCOPT="-m" ;; esac wc $WCOPT $@ }