The following resources might be interesting if you'd like to go deeper into the subjects of this chapter:

• The Linux Documentation Project on Regular Expressions: http://www.tldp.org/LDP/abs/html/x17129.html
• The Linux Documentation Project on Globbing: http://www.tldp.org/LDP/abs/html/globbingref.html
• The Linux Documentation Project on Sed: http://tldp.org/LDP/abs/html/x23170.html