You might also look into getting a replacement man pro- gram. If something strange has gone wrong with your program and you're not sure where you should look for help, try the -w switch first. It will often point out exactly where the trouble is. It's also a good language for many system management tasks. Expression syntax corresponds closely to C expression syntax.
Recursion is of unlimited depth.
Perl can use sophisticated pattern matching techniques to scan large amounts of data quickly. Although optimized for scanning text, Perl can also deal with binary data, and can make dbm files look like hashes. Setuid Perl scripts are safer than C pro- grams through a dataflow tracing mechanism that prevents many stupid security holes. If you have a problem that would ordinarily use sed or awk or sh , but it exceeds their capabilities or must run a little faster, and you don't want to write the silly thing in C, then Perl may be for you. Described in the perlthrtut manpage and the Thread manpage.