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#!/usr/bin/env perl -l

print 'Hello, world!';

ken@ibm-laptop:~/tmp> test_shebang.pl
/usr/bin/env: perl -l: No such file or directory

ken@ibm-laptop:~/tmp> echo $PATH
<list of unrelated paths>:.
...
/home/ken/tmp/test_shebang.pl
ken@ibm-laptop:~/tmp> ls -l test_shebang.pl
-rwxr-xr-x 1 ken users 48 Mar 24 10:29 test_shebang.pl

ken@ibm-laptop:~/tmp> cat -vet test_shebang.pl
#!/usr/bin/env perl -l$
$
print 'Hello, world!';$
$

#!/usr/bin/env perl
#!/usr/bin/perl -l
#!/usr/bin/perl

ken@ibm-laptop:~/tmp> perl -e 'print "Hello, world!"'
Hello, world!ken@ibm-laptop:~/tmp>

ken@ibm-laptop:~/tmp> perl -le 'print "Hello, world!"'
Hello, world!

ken@ibm-laptop:~/tmp> perl -v | head -2 | tail -1
This is perl 5, version 18, subversion 2 (v5.18.2) built for x86_64-li
+nux-thread-multi
ken@ibm-laptop:~/tmp> uname -a
Linux ibm-laptop 4.1.34-33-default #1 SMP PREEMPT Thu Oct 20 08:03:29 
+UTC 2016 (fe18aba) x86_64 x86_64 x86_64 GNU/Linux