Andrew Clarke a écrit :
On Wed, 27 Aug 2008 12:18, Norman Ramsey wrote:
In my new job, there's code in /etc/profile that contains a bash-ism:
it's a test to see if the shell is a login shell. From a quick google
search and perusal of the ksh man page, I can't see any obvious way
to see from within the shell if it is a login shell, let alone anything
that is portable across ksh and bash. (If you ask me a non-login shell
has no business reading /etc/profile anyway, but people do the durndest
things...)
I use this slab right near the top of my /etc/profile; it's a steal of the
bash stuff that I found when I started using SuSE
# Check which shell is reading this file
case "$0" in
*rbash*) is=bash ;;
*bash*) is=bash ;;
*rksh*) is=ksh ;;
*ksh*) is=ksh ;;
*ash*) is=ash ;;
*zsh*) is=zsh ;;
*) is=sh ;;
esac
and copes with most known shells, even the useless ones.
Way back, when I had to distinguish ksh from sh, I used to have
if [ "$(id)" != '$(id)' ]
then is=ksh
else is=sh
fi
because the "$(id)" is magical on ksh but not on plain sh
Cordialement,
how about :
if [ "${RANDOM}" != "${RANDOM}" ]; then
is='ksh'
else
is='sh'
fi
Cyrille Lefevre
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