diff --git a/tcltk/ext2sim.sh.in b/tcltk/ext2sim.sh.in
index 1ef20ad2..f737caf4 100755
--- a/tcltk/ext2sim.sh.in
+++ b/tcltk/ext2sim.sh.in
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 #
 # Standalone script for ext2sim, for Tcl-based magic 8.0
 #
@@ -18,7 +18,7 @@ TCL_REL_OR_ABS=TCL_DIR_REL_OR_ABS
 if [ "${TCL_REL_OR_ABS:0:1}" = "/" ]; then
    TCL_DIR=$TCL_REL_OR_ABS
 else
-   TCL_DIR=$(dirname $(realpath ${BASH_SOURCE[0]}))/$TCL_REL_OR_ABS
+   TCL_DIR=$(dirname $(readlink -f ${BASH_SOURCE[0]}))/$TCL_REL_OR_ABS
 fi
 #
 eval ${TCL_DIR}/magicdnull -dnull -noconsole -nowrapper $mgargs <<EOF
diff --git a/tcltk/ext2spice.sh.in b/tcltk/ext2spice.sh.in
index 3e78a0da..b35a7da5 100755
--- a/tcltk/ext2spice.sh.in
+++ b/tcltk/ext2spice.sh.in
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 #
 # Standalone script for ext2spice, for Tcl-based magic 8.0
 #
@@ -18,7 +18,7 @@ TCL_REL_OR_ABS=TCL_DIR_REL_OR_ABS
 if [ "${TCL_REL_OR_ABS:0:1}" = "/" ]; then
    TCL_DIR=$TCL_REL_OR_ABS
 else
-   TCL_DIR=$(dirname $(realpath ${BASH_SOURCE[0]}))/$TCL_REL_OR_ABS
+   TCL_DIR=$(dirname $(readlink -f ${BASH_SOURCE[0]}))/$TCL_REL_OR_ABS
 fi
 #
 eval ${TCL_DIR}/magicdnull -dnull -noconsole -nowrapper $mgargs <<EOF
diff --git a/tcltk/magic.sh.in b/tcltk/magic.sh.in
index 24846346..70fee075 100755
--- a/tcltk/magic.sh.in
+++ b/tcltk/magic.sh.in
@@ -15,7 +15,7 @@ TCL_REL_OR_ABS=TCL_DIR_REL_OR_ABS
 if [ "${TCL_REL_OR_ABS:0:1}" = "/" ]; then
    TCL_DIR=$TCL_REL_OR_ABS
 else
-   TCL_DIR=$(dirname $(realpath ${BASH_SOURCE[0]}))/$TCL_REL_OR_ABS
+   TCL_DIR=$(dirname $(readlink -f ${BASH_SOURCE[0]}))/$TCL_REL_OR_ABS
 fi
 TKCON=true
 DNULL=