On Mar 15 12:33, Andrew Schulman wrote: > > I just came up with this recipe to change the default PS1 value to use red > > for the user@host part of the prompt and to change the $ character to a #: > > > > if id | grep -qi 'member of administrators group' > > then > > export PS1=$(echo "$PS1" | sed -e 's_32_31_' -e 's_\\\$_#_') > > fi > > > > Im not certain the string match on the output of id(1) works everywhere. > > Is there a better way to check for admin privileges under Cygwin? You > > cant check for UID or EUID == 0, for example, as youd do on a true POSIX > > system. > > Ha! Yes, there is: see > https://cygwin.com/ml/cygwin/2015-02/msg00057.html. The magic test is > > id -G | grep -qE '\<(544|0)\>' > > where 544 is the Administrators group, and 0 is the root group in case the > old root group entry is present in /etc/group. > > For example: > > id -G | grep -qE '\<(544|0)\>' && echo admin || echo user
Thou shalt not use the test for gid 0 anymore. If it works, remove the entry from /etc/group, or better, remove /etc/group entirely. This entry will render wrong and unwanted results when you least expect them. Such cruft always does. Corinna -- Corinna Vinschen Please, send mails regarding Cygwin to Cygwin Maintainer cygwin AT cygwin DOT com Red Hat
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