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Hi, A large client of mine is migrating a bunch of ksh scripts
to Linux that have previously run on HP-UX and Solaris and has discovered that
many of them break because the standard Linux version of ksh (pdksh) creates
the child on right side of a pipe rather than the left – a well
documented incompatibility of the Linux ksh that shows no prospect of ever
being considered a “bug” and hence no prospect of ever being
“fixed”. Accordingly, they have hit upon the idea of using zsh to
emulate ksh. That certainly solves the original problem, but introduces a
new one. In ksh the ‘whence’ command always gives you the
absolute path of its argument. So ‘whence $0’ always gives a
full path even if the command was executed by typing
‘./myscript’. I can find no straightforward way to do this in
zsh. Bear in mind that the scripts will run with ksh on HP-UX and Solaris
– as they have for years – but will be modified to run with zsh on
Linux with a command such as: If [[ -z $ZSH_VERSION ]] then if [[ -x /usr/local/bin/zsh ]] then /usr/local/bin/zsh
$@ exit $? fi else emulate ksh fi Any ideas? --Tony |