Handle custom kernel names

[LukeShortCloud]

Both upstream and custom kernel names can now be used.

[LukeShortCloud]

Example output for an upstream kernel:

$ export uname_r="6.10.5-200.fc40.x86_64"
$ kernel=$(echo ${uname_r} | awk -F '-' '{print $1}')
$ echo ${kernel}
6.10.5
$ release=$(echo ${uname_r} | awk -F '-' '{print $2}' | sed -r 's|\.[a-z]{2}[0-9]+| |' | awk '{print $1}' | cut -d. -f1)
$ echo ${release}
200
$ dist=$(echo ${uname_r} | rev | cut -d. -f2 | rev)
$ echo ${dist}
fc40

Example output for a custom kernel:

$ export uname_r="6.10.11-201.custom.fc41.x86_64"
$ kernel=$(echo ${uname_r} | awk -F '-' '{print $1}')
$ echo ${kernel}
6.10.11
$ release=$(echo ${uname_r} | awk -F '-' '{print $2}' | sed -r 's|\.[a-z]{2}[0-9]+| |' | awk '{print $1}' | cut -d. -f1)
$ echo ${release}
201
$ dist=$(echo ${uname_r} | rev | cut -d. -f2 | rev)
$ echo ${dist}
fc41