Bug 1856884

+++ This bug was initially created as a clone of Bug #1856881 +++

Description of problem:

Updating the nfs-utils modifies the /etc/group file. This is not expected if the package is already installed and the 'rpcuser' group is already there.

The if statement for the nfsnobody seems to be fine but the code for rpcuser needs enhancements as,


The problem is with the prescript of the rpm as,

Current spec file:
~~~~~~~~~

# Create rpcuser gid as long as it does not already exist
cat /etc/group | cut -d':' -f 1 | grep --quiet rpcuser 2>/dev/null
if [ "$?" -eq 1 ]; then
    /usr/sbin/groupadd -g 29 rpcuser >/dev/null 2>&1 || :
else
    /usr/sbin/groupmod -g 29 rpcuser >/dev/null 2>&1 || :
fi

~~~~~~~~~

Here even the conditions falses the same command is marked to get executed.

The changes to the spec file should be as for modifying/changing the pre-scripts as,

~~~~~~~~~

# Create rpcuser gid as long as it does not already exist
cat /etc/group | cut -d':' -f 1 | grep --quiet rpcuser 2>/dev/null
if [ "$?" -eq 1 ]; then
    /usr/sbin/groupadd -g 29 rpcuser >/dev/null 2>&1 || :

fi

~~~~~~~~~


Version-Release number of selected component (if applicable):
RHEL 8/RHEL7

Any release of nfs-utils


How reproducible:

#stat /etc/group -->> check file stamp before update of package.

#yum update nfs-utils

#stat /etc/group -->> check file stamp after update of package. 

Steps to Reproduce:
1. check time stamp of the /etc/group file
2. Update the nfs-utils package
3. Check time stamp of the /etc/group file which differs
 
Actual results:

It does modifies the file unnecessorily.


Expected results:

It should not run the command again if the 


Additional info: