diff --git a/scripts/Rzab.sh b/scripts/Rzab.sh
index f8eac3c..d4a8a77 100755
--- a/scripts/Rzab.sh
+++ b/scripts/Rzab.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # set input/working/output folders
 in=/Users/daniela/Desktop/scenario_001/files5s
diff --git a/scripts/alpha-t.sh b/scripts/alpha-t.sh
index 38e1776..f0538ba 100755
--- a/scripts/alpha-t.sh
+++ b/scripts/alpha-t.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # set input/working/output folders
 in=/Users/daniela/Desktop/scenario_001/files5s
diff --git a/scripts/beta-alpha.sh b/scripts/beta-alpha.sh
index 687cb7d..e35288b 100755
--- a/scripts/beta-alpha.sh
+++ b/scripts/beta-alpha.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # set input/working/output folders
 in=/Users/daniela/Desktop/scenario_001/files5s
diff --git a/scripts/beta-alpha_beam.sh b/scripts/beta-alpha_beam.sh
index a467e0d..e56163a 100755
--- a/scripts/beta-alpha_beam.sh
+++ b/scripts/beta-alpha_beam.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # set input/working/output folders
 in=/Users/daniela/Desktop/runs2014/case008/case008_data
diff --git a/scripts/gamma-beam.sh b/scripts/gamma-beam.sh
index e2d2285..9402647 100755
--- a/scripts/gamma-beam.sh
+++ b/scripts/gamma-beam.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # set input/working/output folders
 in=/Users/lorenzo/Desktop/scenario_001
diff --git a/scripts/gamma-beam2.sh b/scripts/gamma-beam2.sh
index eb37e7e..24daabf 100755
--- a/scripts/gamma-beam2.sh
+++ b/scripts/gamma-beam2.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # set input/working/output folders
 in=/Users/lorenzo/Desktop/scenario_001
diff --git a/scripts/gamma-singleray.sh b/scripts/gamma-singleray.sh
index 4c4dfdd..6497599 100755
--- a/scripts/gamma-singleray.sh
+++ b/scripts/gamma-singleray.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # set input/working/output folders
 in=/Users/lorenzo/ITER/UL-Grant-161/optical-design
diff --git a/scripts/profJ-comparison.gnu b/scripts/profJ-comparison.gnu
index 8e91e2d..590cf8f 100755
--- a/scripts/profJ-comparison.gnu
+++ b/scripts/profJ-comparison.gnu
@@ -1,4 +1,4 @@
-#!/usr/local/bin/gnuplot
+#!/usr/bin/env gnuplot
 
 set style line 1 lt 1 lw 1 lc rgb "black"     pt 6 #mat
 set style line 2 lt 1 lw 1 lc rgb "red"       pt 1 #v1
diff --git a/scripts/profsum.sh b/scripts/profsum.sh
index 1a3a728..95bb3e4 100755
--- a/scripts/profsum.sh
+++ b/scripts/profsum.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 awkcmd='BEGIN {lastu=0; lastl=0}; \
      NR<21 {print}; \
      NR==21 {sub("beam ","mirr "); print}; \
diff --git a/scripts/t-alpha.sh b/scripts/t-alpha.sh
index 356435a..4df3ad3 100755
--- a/scripts/t-alpha.sh
+++ b/scripts/t-alpha.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # set input/working/output folders
 in=/Users/daniela/Desktop/scenario_001/files5s