utils: remove bashisms

fbsetbg: The random number generation used 'time' shell internal, which
does not exist in all shells.  Allowing 'ps' output to be part of cksum
input will increase entropy and enhance quality of the randomness.

fbsetbg: The second fix is more important.  In posix shell there is no
'==' comparision operator.

fluxbox-generate_menu: There are no quarantees about echo accepting
options, so use 'printf' for more advanced outputing.

1 files changed, 6 insertions, 2 deletions

diff --git a/util/fbsetbg b/util/fbsetbg
index 0bdb804..e277317 100644
--- a/util/fbsetbg
+++ b/util/fbsetbg
@@ -505,7 +505,11 @@ if [ "$option" = random ]; then
             randomnumber=`random_number`
         # some shells don't support $RANDOM
         elif [ -z "$RANDOM" ]; then
-            randomnumber=`(echo $$ ;time ps; w ; date )2>&1 | cksum | cut -f1 -d' '`
+            if [ -r /dev/urandom ]; then
+                randomnumber=`hexdump -n 2 -e '/2 "%u"' /dev/urandom`
+            else
+                randomnumber=`(echo $$; ps; w; date) 2>&1 | cksum | cut -f1 -d' '`
+            fi
         else
             randomnumber="$RANDOM"
         fi
@@ -526,7 +530,7 @@ fi
 
 
 if [ ! -r "$wallpaper" ]; then
-        if [ "$ignore_missing_wallpaper" == "true" ]; then
+        if [ "$ignore_missing_wallpaper" = "true" ]; then
                 exit 0
         fi
     message "Can't find wallpaper $wallpaper"