diff --git a/Borland Turbo C v1/m.sh b/Borland Turbo C v1/m.sh
index 7874c46..16768de 100644
--- a/Borland Turbo C v1/m.sh	
+++ b/Borland Turbo C v1/m.sh	
@@ -1,4 +1,4 @@
-str=${1^^}
+str=$(tr '[a-z]' '[A-Z]' <<< $1)
 
 rm $str.OBJ 2>/dev/null
 rm $str.COM 2>/dev/null
diff --git a/Borland Turbo C v2/m.sh b/Borland Turbo C v2/m.sh
index 678a595..fd4c5be 100644
--- a/Borland Turbo C v2/m.sh	
+++ b/Borland Turbo C v2/m.sh	
@@ -1,4 +1,4 @@
-str=${1^^}
+str=$(tr '[a-z]' '[A-Z]' <<< $1)
 
 rm $str.OBJ 2>/dev/null
 rm $str.COM 2>/dev/null
diff --git a/Borland Turbo C++ v1/BIN/m.sh b/Borland Turbo C++ v1/BIN/m.sh
index 8ac2c63..dd80c42 100644
--- a/Borland Turbo C++ v1/BIN/m.sh	
+++ b/Borland Turbo C++ v1/BIN/m.sh	
@@ -1,4 +1,4 @@
-str=${1^^}
+str=$(tr '[a-z]' '[A-Z]' <<< $1)
 
 rm $str.OBJ 2>/dev/null
 rm $str.COM 2>/dev/null
diff --git a/Borland Turbo Pascal v4/m.sh b/Borland Turbo Pascal v4/m.sh
index a49aef2..eabf117 100644
--- a/Borland Turbo Pascal v4/m.sh	
+++ b/Borland Turbo Pascal v4/m.sh	
@@ -1,4 +1,4 @@
-str=${1^^}
+str=$(tr '[a-z]' '[A-Z]' <<< $1)
 
 rm $str.EXE 2>/dev/null
 
diff --git a/Borland Turbo Pascal v5/m.sh b/Borland Turbo Pascal v5/m.sh
index 5c7cb98..04f723c 100644
--- a/Borland Turbo Pascal v5/m.sh	
+++ b/Borland Turbo Pascal v5/m.sh	
@@ -1,4 +1,4 @@
-str=${1^^}
+str=$(tr '[a-z]' '[A-Z]' <<< $1)
 
 rm $str.MAP 2>/dev/null
 rm $str.EXE 2>/dev/null
diff --git a/Borland Turbo Pascal v55/m.sh b/Borland Turbo Pascal v55/m.sh
index 5c7cb98..04f723c 100644
--- a/Borland Turbo Pascal v55/m.sh	
+++ b/Borland Turbo Pascal v55/m.sh	
@@ -1,4 +1,4 @@
-str=${1^^}
+str=$(tr '[a-z]' '[A-Z]' <<< $1)
 
 rm $str.MAP 2>/dev/null
 rm $str.EXE 2>/dev/null
diff --git a/Borland Turbo Pascal v6/m.sh b/Borland Turbo Pascal v6/m.sh
index 5c7cb98..04f723c 100644
--- a/Borland Turbo Pascal v6/m.sh	
+++ b/Borland Turbo Pascal v6/m.sh	
@@ -1,4 +1,4 @@
-str=${1^^}
+str=$(tr '[a-z]' '[A-Z]' <<< $1)
 
 rm $str.MAP 2>/dev/null
 rm $str.EXE 2>/dev/null
diff --git a/Borland Turbo Pascal v7/BIN/m.sh b/Borland Turbo Pascal v7/BIN/m.sh
index c135491..a3bccfd 100644
--- a/Borland Turbo Pascal v7/BIN/m.sh	
+++ b/Borland Turbo Pascal v7/BIN/m.sh	
@@ -1,4 +1,4 @@
-str=${1^^}
+str=$(tr '[a-z]' '[A-Z]' <<< $1)
 
 ntvdm -r:.. -u TPC.EXE $str.PAS -\$S- -GD
 
diff --git a/DeSmet C88 v24/m.sh b/DeSmet C88 v24/m.sh
index ae49af1..5dec36a 100644
--- a/DeSmet C88 v24/m.sh	
+++ b/DeSmet C88 v24/m.sh	
@@ -1,4 +1,4 @@
-str=${1^^}
+str=$(tr '[a-z]' '[A-Z]' <<< $1)
 
 rm $str.O 2>/dev/null
 rm $str.EXE 2>/dev/null
diff --git a/DeSmet C88 v31b/m.sh b/DeSmet C88 v31b/m.sh
index eb45ec0..4ead9db 100644
--- a/DeSmet C88 v31b/m.sh	
+++ b/DeSmet C88 v31b/m.sh	
@@ -1,4 +1,4 @@
-str=${1^^}
+str=$(tr '[a-z]' '[A-Z]' <<< $1)
 
 rm $str.O 2>/dev/null
 rm $str.EXE 2>/dev/null
diff --git a/Digital Research CB-86 v2/m.sh b/Digital Research CB-86 v2/m.sh
index 9b9d0ea..50be545 100644
--- a/Digital Research CB-86 v2/m.sh	
+++ b/Digital Research CB-86 v2/m.sh	
@@ -1,4 +1,4 @@
-str=${1^^}
+str=$(tr '[a-z]' '[A-Z]' <<< $1)
 
 rm $str.SYM 2>/dev/null
 rm $str.OBJ 2>/dev/null
diff --git a/Digital Research MT+86 Pascal v311/m.sh b/Digital Research MT+86 Pascal v311/m.sh
index d230c42..ebe1db9 100644
--- a/Digital Research MT+86 Pascal v311/m.sh	
+++ b/Digital Research MT+86 Pascal v311/m.sh	
@@ -1,4 +1,4 @@
-str=${1^^}
+str=$(tr '[a-z]' '[A-Z]' <<< $1)
 
 rm $str.ERR 2>/dev/null
 rm $str.R86 2>/dev/null