fix: unset LD paths set by Acronis

Acronis includes an outdated version of libstdc. This library is
used by MySQL. This resulted in failures on more recent versions
of Ubuntu as Acronis sets LD_LIBRARY_PATH and LD_PRELOAD.

mysqlbackup.sh

@@ -5,6 +5,9 @@
 
 set -euo pipefail
 
+unset LD_LIBRARY_PATH
+unset LD_PRELOAD
+
 DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" >/dev/null 2>&1 && pwd)"
 source "${DIR}/functions.sh"
 

mysqlfreeze.sh

@@ -5,6 +5,9 @@
 
 set -euo pipefail
 
+unset LD_LIBRARY_PATH
+unset LD_PRELOAD
+
 DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" >/dev/null 2>&1 && pwd)"
 source "${DIR}/functions.sh"
 
@@ -63,4 +66,4 @@ while [ ! -f "$LOGGING_LOCATION/$FREEZE_LOCKFILE" ]; do
 done
 
 echo $FREEZE_SESSION_PID > "$LOGGING_LOCATION/$FREEZE_LOCKFILE"
-echo "$(date -Ins) - Freeze successful." >> "$LOGGING_LOCATION/$FREEZE_LOGFILE"
+echo "$(date -Ins) - Freeze successful." >> "$LOGGING_LOCATION/$FREEZE_LOGFILE"

mysqlthaw.sh

@@ -5,6 +5,9 @@
 
 set -euo pipefail
 
+unset LD_LIBRARY_PATH
+unset LD_PRELOAD
+
 DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" >/dev/null 2>&1 && pwd)"
 source "${DIR}/functions.sh"
 
@@ -24,4 +27,4 @@ pkill -9 -P $FREEZE_SESSION_PID
 echo "$(date -Ins) - Deleting freeze lock file..." >> "$LOGGING_LOCATION/$FREEZE_LOGFILE"
 rm -f "$LOGGING_LOCATION/$FREEZE_LOCKFILE"
 
-echo "$(date -Ins) - Unfreeze successful." >> "$LOGGING_LOCATION/$FREEZE_LOGFILE"
+echo "$(date -Ins) - Unfreeze successful." >> "$LOGGING_LOCATION/$FREEZE_LOGFILE"