On Sun, 7 May 2000, Bruce A. Mallett wrote:
> While on the PATH manipulation subject, I find the following function
> handy when using ksh. It eliminates duplicates in a PATH style string.
> This is useful when one has a lot of things like:
>
> export PATH="$PATH;/some/new/stuff"
>
> These tend to accumulate a lot of duplicate entries which can be eliminated
> using this function by:
>
> RemoveDups "$PATH"
> export PATH="$_RemoveDups"
i'm nervous about the technique of returning arbitrary values from
functions by assigning those values to a global variable. an
alternative technique is to have the function return the value
by printing it, and getting that value using command substitution:
PATH=$(RemoveDups $PATH)
the RemoveDups function itself would then, as the last statement,
simply
print <new path>
comments?
rday
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