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Add dnf version check

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EL 8.0 had a dnf that was not compatible with this script (output changed
causing parsing errors).  Make sure that e ahve a recent enough dnf for this
script to run properly and recommend updating otherwise.
This commit is contained in:
Peter Ajamian 2021-05-29 14:17:06 +12:00
parent 3941878e51
commit 7aa8c84ce2
1 changed files with 19 additions and 1 deletions
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20
migrate2rocky.sh
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@ -57,6 +57,19 @@ os-release () (
printf '%s\n' "${!1}" printf '%s\n' "${!1}"
) )
# Check the version of a package against a supplied version number. Note that
# this uses sort -V to compare the versions which isn't perfect for rpm package
# versions, but to do a proper comparison we would need to use rpmdev-vercmp in
# the rpmdevtools package which we don't want to force-install. sort -V should
# be adequate for our needs here.
pkg_ver() (
ver=$(rpm -q --qf '%{VERSION}\n' "$1") || return 2
if [[ $(sort -V <<<"$ver"$'\n'"$2" | head -1) != $2 ]]; then
return 1
fi
return 0
)
# All of the binaries used by this script are available in a EL8 minimal install # All of the binaries used by this script are available in a EL8 minimal install
# and are in /bin, so we should not encounter a system where the script doesn't # and are in /bin, so we should not encounter a system where the script doesn't
# work unless it's severly broken. This is just a simple check that will cause # work unless it's severly broken. This is just a simple check that will cause
@ -79,12 +92,17 @@ bin_check() {
fi fi
local -a missing local -a missing
for bin in rpm dnf awk column tee tput mkdir cat arch sort uniq rmdir rm; do for bin in rpm dnf awk column tee tput mkdir cat arch sort uniq rmdir rm \
head; do
if ! type "$bin" >/dev/null 2>&1; then if ! type "$bin" >/dev/null 2>&1; then
missing+=("$bin") missing+=("$bin")
fi fi
done done
if ! pkg_ver dnf 4.2; then
exit_message 'dnf >= 4.2 is required for this script. Please run "dnf update" first.'
fi
if (( ${#missing[@]} )); then if (( ${#missing[@]} )); then
exit_message "Commands not found: ${missing[@]}. Possible bad PATH setting or corrupt installation." exit_message "Commands not found: ${missing[@]}. Possible bad PATH setting or corrupt installation."
fi fi