perl -e , . perlrun:
-e commandline
. -e, Perl . -e script. , .
:
$ perl -e 'print "Hello, world!\n"'
Hello, world!
, , ,
$ perl -e 'while (1) { print "foo!"'
Missing right curly or square bracket at -e line 1, at end of line
syntax error at -e line 1, at EOF
Execution of -e aborted due to compilation errors.