Perhaps something like this would be desirable? --- cyrus-common-2.2.postinst 2006-02-11 02:57:41.000000000 -0500 +++ cyrus-common-2.2.postinst.new 2006-02-12 04:20:34.000000000 -0500 @@ -55,7 +55,8 @@ adduser --system --ingroup mail --home /var/spool/cyrus \ --shell /bin/sh --disabled-password \ --gecos "Cyrus Mailsystem User" cyrus >/dev/null 2>&1 || { - if getent passwd | grep -s -q -E '^cyrus:'; then + uid=`getent passwd | egrep -s '^cyrus:'|cut -d':' -f3` + if [ ${uid} -gt 999 ]; then echo "Non-system user cyrus found. I will not overwrite a non-system" >&2 echo "user. Remove the user and reinstall cyrus-common-2.2." >&2 exit 1
There's probably a cleaner way to check if cyrus is the system user, but this seems to work...
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