Use "#!/usr/bin/env perl" as shebang line.

tests/scripts/check-doxy-blocks.pl

@@ -1,4 +1,4 @@
-#!/usr/bin/perl
+#!/usr/bin/env perl
 
 # Detect comment blocks that are likely meant to be doxygen blocks but aren't.
 #

tests/scripts/curves.pl

@@ -1,4 +1,4 @@
-#!/usr/bin/perl
+#!/usr/bin/env perl
 
 # curves.pl
 #

tests/scripts/depends-hashes.pl

@@ -1,4 +1,4 @@
-#!/usr/bin/perl
+#!/usr/bin/env perl
 
 # depends-hashes.pl
 #

tests/scripts/depends-pkalgs.pl

@@ -1,4 +1,4 @@
-#!/usr/bin/perl
+#!/usr/bin/env perl
 
 # depends-pkalgs.pl
 #

tests/scripts/gen_ctr_drbg.pl

@@ -1,4 +1,4 @@
-#!/usr/bin/perl
+#!/usr/bin/env perl
 #
 # Based on NIST CTR_DRBG.rsp validation file
 # Only uses AES-256-CTR cases that use a Derivation function

tests/scripts/gen_gcm_decrypt.pl

@@ -1,4 +1,4 @@
-#!/usr/bin/perl
+#!/usr/bin/env perl
 #
 # Based on NIST gcmDecryptxxx.rsp validation files
 # Only first 3 of every set used for compile time saving

tests/scripts/gen_gcm_encrypt.pl

@@ -1,4 +1,4 @@
-#!/usr/bin/perl
+#!/usr/bin/env perl
 #
 # Based on NIST gcmEncryptIntIVxxx.rsp validation files
 # Only first 3 of every set used for compile time saving

tests/scripts/gen_pkcs1_v21_sign_verify.pl

@@ -1,4 +1,4 @@
-#!/usr/bin/perl
+#!/usr/bin/env perl
 #
 
 use strict;

tests/scripts/key-exchanges.pl

@@ -1,4 +1,4 @@
-#!/usr/bin/perl
+#!/usr/bin/env perl
 
 # key-exchanges.pl
 #

tests/scripts/list-enum-consts.pl

@@ -1,4 +1,4 @@
-#!/usr/bin/perl
+#!/usr/bin/env perl
 
 use warnings;
 use strict;

tests/scripts/recursion.pl

@@ -1,4 +1,4 @@
-#!/usr/bin/perl
+#!/usr/bin/env perl
 
 # Find functions making recursive calls to themselves.
 # (Multiple recursion where a() calls b() which calls a() not covered.)

tests/scripts/run-test-suites.pl

@@ -1,4 +1,4 @@
-#!/usr/bin/perl
+#!/usr/bin/env perl
 
 # run-test-suites.pl
 #

tests/scripts/test-ref-configs.pl

@@ -1,4 +1,4 @@
-#!/usr/bin/perl
+#!/usr/bin/env perl
 
 # test-ref-configs.pl
 #