diff --git a/.githooks/pre-commit b/.githooks/pre-commit
index 4282deb..492528d 100755
--- a/.githooks/pre-commit
+++ b/.githooks/pre-commit
@@ -16,6 +16,11 @@
 # Check the number and total size of files about to be commited
 #===================================================================================================================================
 
+# Executables, command -v is safe with sh
+DU_EXE=$(command -v du)
+GIT_EXE=$(command -v git)
+LS_EXE=$(command -v ls)
+
 # Check if override is requested
 if [ "$GIT_OVERRIDE_LIMITS" = "1" ]; then
   echo 'Detected "GIT_OVERRIDE_LIMITS=1", overriding pre-commit check ...'
@@ -30,7 +35,7 @@ SIZETOTALLIMIT=1000000
 SIZETOTALWARN=100000
 
 # Number of existing files plus 100
-NUMBERLIMIT=$(git ls-tree --full-tree -r --name-only HEAD | wc -l)
+NUMBERLIMIT=$($GIT_EXE ls-tree --full-tree -r --name-only HEAD | wc -l)
 NUMBERLIMIT=$(($NUMBERLIMIT + 100))
 NUMBERWARN=100
 
@@ -44,7 +49,7 @@ EXEWARN=0
 # Check if file is opened in a terminal
 if test -t 1; then
   # Check if terminal supports color
-  NbrOfColors=$(which tput > /dev/null && tput colors)
+  NbrOfColors=$(type tput > /dev/null && tput colors)
   if test -n "$NbrOfColors" && test "$NbrOfColors" -ge 8; then
     NC="$(tput sgr0)"
     RED="$(tput setaf 1)"
@@ -54,13 +59,13 @@ if test -t 1; then
 fi
 
 # Get a list of all staged files
-CHANGED=$(git diff --staged --name-only)
+CHANGED=$($GIT_EXE diff --staged --name-only)
 
 # Check if any changes are present
 if [ -n "$CHANGED" ]; then
   # Sort found files by size (-S) in reverse ordering (-r)
-  SORTED=$(ls -Shsr "$CHANGED" 2> /dev/null)
-  NUMBER=$(git diff --staged --numstat | wc -l)
+  SORTED=$($LS_EXE -Shsr "$CHANGED" 2> /dev/null)
+  NUMBER=$($GIT_EXE diff --staged --numstat | wc -l)
 
   # Check the number of files
   if [ "$NUMBER" -ge "$NUMBERLIMIT" ]; then
@@ -77,8 +82,8 @@ if [ -n "$CHANGED" ]; then
     #  -f  True if FILE exists and is a regular file.
     if [ -f "$file" ]; then
       # -b, --bytes           equivalent to '--apparent-size --block-size=1'
-      LINE=$(du -h "$file")
-      FILESIZE=$(du -b "$file" | cut -d '	' -f1) # this is a tab, not a white space
+      LINE=$($DU_EXE -h "$file")
+      FILESIZE=$($DU_EXE -b "$file" | cut -d '	' -f1) # this is a tab, not a white space
 
       # Sum up the total file sizes
       FILESUM=$(($FILESUM + $FILESIZE))
@@ -121,7 +126,7 @@ if [ -n "$CHANGED" ]; then
         printf "${RED}The following file(s) are executable, which is not allowed. Remove the execute permission via 'chmod -x filename' and try again.${NC}\n"
         EXEWARN=1
       fi
-      LINE=$(ls -alFhs "$file")
+      LINE=$($LS_EXE -alFhs "$file")
       printf "$LINE\n"
       ERROR=1
     fi