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|
#!/bin/bash
set -e
set -o pipefail
never_drop=(
information_schema
mysql
performance_schema
sys
)
never_drop()
{
grep -vF ${never_drop[@]/#/ -e }
}
choose_drops()
{
mariadb -ss -b <<< 'show databases' |
never_drop
}
execute_drops()
{
while read dbname
do
t=\`
printf 'drop database %s ;\n' \
"$t${dbname//$t/$t$t}$t"
done |
if [ "$REALLY_DROP_ALL_MARIADB_DATABASES" ]
then
mariadb -v
else
cat
fi
}
warn()
{
printf 'Warning: %s\n' "$*" >&2
}
perr()
{
printf 'Error: %s: %s\n' "$0" "$*" >&2
}
case "$#$1" in
1--drop-all-databases )
shift
REALLY_DROP_ALL_MARIADB_DATABASES=y
;;
0 )
warn 'No databases will be dropped'
warn 'To execute the SQL, supply' \
'command-line argument: --drop-all-databases'
;;
* )
perr "Unexpected argument list: ${@@Q}"
exit 1
;;
esac
choose_drops | execute_drops
|
