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rocky-tools
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Test for bash at the top. 

Put a test for bash at the top to make sure that people don't try to run in
POSIX sh mode.
This commit is contained in:
Peter Ajamian 2021-06-12 23:58:38 +12:00
parent 20c7162a9f
commit 5051fc5312
1 changed files with 15 additions and 5 deletions
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20
migrate2rocky/migrate2rocky.sh
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@ -32,6 +32,16 @@
## 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
# 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
# Path to logfile
logfile=/var/log/migrate2rocky.log
@ -119,17 +129,17 @@ bin_check() {
exit_message "You must run this script as root. Either use sudo or 'su -c ${0}'"
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."
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."
fi
local -a missing bins
bins=(
rpm dnf awk column tee tput mkdir