diff --git a/lsf.sh b/lsf.sh
index b628105..adbfc6c 100755
--- a/lsf.sh
+++ b/lsf.sh
@@ -8,7 +8,7 @@
 # echo -E is used to avoid \033 expanding
 # bare asterisks are escaped to prevent globbing
 # arrays are used instead of relying on word expansion
-# for loops over ${array[@]} as it's the only commonality I know
+# for loops over "${array[@]}" as it works the same in both
 
 # TODO: set better defaults for quick glances at filesize
 # TODO: utilize filetype; opt to strip path from output
@@ -24,7 +24,7 @@ awk -F: '{print "gnames["$3"]=\""$1"\""}' < /etc/group
 for x in $(groups); do echo "us[\"$x\"]=1"; done
 i=0;for x in bla red gre yel blu pur cya whi; do
 	echo -E $x'="\033[3'${i}'m"'
-	echo -n "$x" | tr '[a-z]' '[A-Z]'
+	echo -n "$x" | tr a-z A-Z
 	echo -E '="\033[1;3'${i}'m"'
 	let i++
 done
@@ -53,15 +53,15 @@ fs=( 0    K    K\*8  M    M\*8  G    G\*8  T    T\*8)
 fus=(B    B    B     K    K     M    M     G    G    T)
 fcs=(BLA  cya  CYA   CYA  yel   yel  pur   pur  red  red)
 pc=(BLA WHI yel YEL blu BLU gre GRE)
-i=0;for x in ${ft[@]}; do echo "f[\"time,$i\"]=$x";     let i++;done
+i=0;for x in "${ft[@]}"; do echo "f[\"time,$i\"]=$x";     let i++;done
 echo "f[\"times\"]=$i"
-i=0;for x in ${fs[@]}; do echo "f[\"size,$i\"]=$x";     let i++;done
+i=0;for x in "${fs[@]}"; do echo "f[\"size,$i\"]=$x";     let i++;done
 echo "f[\"sizes\"]=$i"
-i=0;for x in ${fut[@]};do echo "fu[\"time,$i\"]=\"$x\"";let i++;done
-i=0;for x in ${fus[@]};do echo "fu[\"size,$i\"]=\"$x\"";let i++;done
-i=0;for x in ${fct[@]};do echo "fc[\"time,$i\"]=$x";    let i++;done
-i=0;for x in ${fcs[@]};do echo "fc[\"size,$i\"]=$x";    let i++;done
-i=0;for x in ${pc[@]}; do echo "pc[$i]=$x";             let i++;done
+i=0;for x in "${fut[@]}";do echo "fu[\"time,$i\"]=\"$x\"";let i++;done
+i=0;for x in "${fus[@]}";do echo "fu[\"size,$i\"]=\"$x\"";let i++;done
+i=0;for x in "${fct[@]}";do echo "fc[\"time,$i\"]=$x";    let i++;done
+i=0;for x in "${fcs[@]}";do echo "fc[\"size,$i\"]=$x";    let i++;done
+i=0;for x in "${pc[@]}"; do echo "pc[$i]=$x";             let i++;done
 )"
 	echo -E "$begin"
 }
@@ -158,8 +158,8 @@ function fixlen(str, len) {
 	print
 }'
 
-	shift $(($OPTIND-1))
-	find "${1:-.}" -maxdepth 1 -print0 | xargs -0 stat -t | awk --non-decimal-data "$program"
+	shift $((OPTIND-1))
+	find "${1:-.}" -maxdepth 1 -exec stat -t {} + | awk --non-decimal-data "$program"
 }
 
 case $- in