Use "yes" for true, "" for false. Use $PO_DIR instead of $TMP_DIR/po. Add and test Baron's code for 'Options and values after processing arguments'. Make --help exit 0 unless there were errors.

lib/bash/collect.sh

@@ -61,7 +61,7 @@ collect() {
 
    # Getting a GDB stacktrace can be an intensive operation,
    # so do this only if necessary (and possible).
-   if [ "$CMD_GDB" -a "$OPT_COLLECT_GDB" = "yes" -a "$mysqld_pid" ]; then
+   if [ "$CMD_GDB" -a "$OPT_COLLECT_GDB" -a "$mysqld_pid" ]; then
       $CMD_GDB                     \
          -ex "set pagination 0"    \
          -ex "thread apply all bt" \
@@ -112,7 +112,7 @@ collect() {
 
    # If TCP dumping is specified, start that on the server's port.
    local tcpdump_pid=""
-   if [ "$CMD_TCPDUMP" -a  "$OPT_COLLECT_TCPDUMP" = "yes" ]; then
+   if [ "$CMD_TCPDUMP" -a  "$OPT_COLLECT_TCPDUMP" ]; then
       local port=$(awk '/^port/{print $2}' "$d/$p-variables")
       if [ "$port" ]; then
          $CMD_TCPDUMP -i any -s 4096 -w "$d/$p-tcpdump" port ${port} &
@@ -123,12 +123,12 @@ collect() {
    # Next, start oprofile gathering data during the whole rest of this process.
    # The --init should be a no-op if it has already been init-ed.
    local have_oprofile="no"
-   if [ "$CMD_OPCONTROL" -a "$OPT_COLLECT_OPROFILE" = "yes" ]; then
+   if [ "$CMD_OPCONTROL" -a "$OPT_COLLECT_OPROFILE" ]; then
       if $CMD_OPCONTROL --init; then
          $CMD_OPCONTROL --start --no-vmlinux
          have_oprofile="yes"
       fi
-   elif [ "$CMD_STRACE" -a "$OPT_COLLECT_STRACE" = "yes" ]; then
+   elif [ "$CMD_STRACE" -a "$OPT_COLLECT_STRACE" ]; then
       # Don't run oprofile and strace at the same time.
       $CMD_STRACE -T -s 0 -f -p $mysqld_pid > "${DEST}/$d-strace" 2>&1 &
       local strace_pid=$!
@@ -244,7 +244,7 @@ collect() {
               "/path/to/mysqld'"                                              \
             > "$d/$p-opreport"
       fi
-   elif [ "$CMD_STRACE" -a "$OPT_COLLECT_STRACE" = "yes" ]; then
+   elif [ "$CMD_STRACE" -a "$OPT_COLLECT_STRACE" ]; then
       kill -s 2 $strace_pid
       sleep 1
       kill -s 15 $strace_pid

lib/bash/parse_options.sh

@@ -91,12 +91,20 @@ usage_or_errors() {
       echo
       echo "Command line options:"
       echo
-      for opt in $(ls $TMPDIR/po/); do
+      for opt in $(ls "$PO_DIR"); do
          local desc=$(cat $TMPDIR/po/$opt | grep '^desc:' | sed -e 's/^desc://')
          echo "--$opt"
          echo "  $desc"
          echo
       done
+      echo "Options and values after processing arguments:"
+      echo
+      for opt in $(ls "$PO_DIR"); do
+         local varname="OPT_$(echo "$opt" | tr a-z- A-Z_)"
+         local varvalue="${!varname}"
+         printf -- "  --%-30s %s" "$opt" "${varvalue:-(No value)}"
+         echo
+      done
       return 1
    fi