My notes — Programming with regular expressions

Stuff from old Perl scripts

Try the following commands:

• find /usr/sbin -type f -exec grep -l perl {} \;
• find /usr/sbin -type f -exec grep -l perl {} \; | wc -l
• find /home/brock/bin -type f -exec grep -l perl {} \; | wc -l
• find /home/brock/bin -type f -exec grep -l "=~" {} \;
• find /home/brock/bin -type f -exec grep "=~" {} \;

What is going on here?

Languages with regular expressions

• gawk
• Perl regexp and matching
• Python re
• Java regex
• JavaScript RegExp
• C/C++ regcomp

Try out the Java or Python tutorial.