On 05/31/2012 05:18 AM, AZ 9901 wrote: > 2012/5/29 AZ 9901 : >> Hello, >> >> I am looking at the /bin/cron-config script. >> >> Line 627, we can find : >> elif net localgroup "${_admingroup}" | grep -Eiq "^${username}.?$"; then >> >> Why .? at the end of the regexp ? "^${username}.?$"
Because 'net' outputs in DOS mode, with carriage returns at the end. >> >> We could have problems if for example we already have "user1" in >> administrators group, and cron user is "user2". >> "user2" would then not be added to the administrators group. Wouldn't that rather be "we could have problems if we already have 'user1', the output does not have carriage returns, and we are trying to add 'user12'"? > Any clue about this regexp ? Since the trailing '.?' exists to strip carriage returns, would it be any more robust to write this as: net localgroup "${_admingroup}" | d2u | grep -Eiq "^${username}$" -- Eric Blake ebl...@redhat.com +1-919-301-3266 Libvirt virtualization library http://libvirt.org
signature.asc
Description: OpenPGP digital signature