[1] Robbins Daniel. LPI Certification 101 exam prep, part 1. http://www-106.ibm.com/developerworks/edu/l-dw-linux-lpir21-i.html.

[2] Robbins Daniel, Houser Chris, et Griffis Aron. LPI Certification 101 exam prep, part 2. http://www-106.ibm.com/developerworks/edu/l-dw-linux-lpir22-i.html.

[3] Dougherty Dale et Robbins Arnold. sed & awk, 2nd Edition. 1-56592-225-5. March 1997. O'Reilly. http://www.oreilly.com/catalog/sed2/.

[4] Robbins Daniel. Common threads : Awk by example, Part 1 - an intro to the great language with the strange name. http://www-106.ibm.com/developerworks/linux/library/l-awk1.html.

[5] Robbins Daniel. Common threads : Awk by example, Part 2 - Records, loops and arrays. http://www-106.ibm.com/developerworks/linux/library/l-awk2.html.

[6] Robbins Daniel. Common threads : Awk by example, Part 3 - String functions and .... http://www-106.ibm.com/developerworks/linux/library/l-awk3.html.