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Move more tests to the top

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Test for teh bash version and root at the top as well, to avoid errors from
commands that otherwise get run before the tests.
This commit is contained in:
Peter Ajamian 2021-06-13 00:30:05 +12:00
parent 5051fc5312
commit b587a7e7a4
1 changed files with 13 additions and 14 deletions
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27
migrate2rocky/migrate2rocky.sh
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@ -32,15 +32,25 @@
## Rocky is RC status. Using this script means you accept all risks of system
## instability.
# This check needs to be right at the top because we start with bash-isms right
# These checks need to be right at the top because we start with bash-isms right
# away in this script.
# We need bash version >= 4 for associative arrays. This will also verify
# that we're actually running bash.
if [ -n "$POSIXLY_CORRECT" ] || [ -z "$BASH_VERSION" ]; then
printf '%s\n' "bash >= 4.0 is required for this script." >&2
exit 1
fi
# Make sure we're root.
if (( EUID != 0 )); then
printf '%s\n' "You must run this script as root. Either use sudo or 'su -c ${0}'" >&2
exit 1
fi
# We need bash version >= 4 for associative arrays.
if (( BASH_VERSINFO < 4 )); then
printf '%s\n' "bash >= 4.0 is required for this script." >&2
exit 1
fi
# Path to logfile
logfile=/var/log/migrate2rocky.log
@ -124,17 +134,6 @@ pre_check () {
# work unless it's severly broken. This is just a simple check that will cause
# the script to bail if any expected system utilities are missing.
bin_check() {
# Make sure we're root.
if (( EUID != 0 )); then
exit_message "You must run this script as root. Either use sudo or 'su -c ${0}'"
fi
# We need bash version >= 4 for associative arrays. This will also verify
# that we're actually running bash.
if (( BASH_VERSINFO < 4 )); then
exit_message "bash >= 4.0 is required for this script."
fi
# Check the platform.
if [[ $(os-release PLATFORM_ID) != "$SUPPORTED_PLATFORM" ]]; then
exit_message "This script must be run on an EL8 distribution. Migration from other distributions is not supported."