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HowTo: Bash Shell Split String Into Array

How do I split string based on delimiter into array under Bash shell?
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I work for a small ISP (Internet Service Provider) and we are using Linux and Unix-like operating system with bash shell. I want to write a shell script to parse the csv file line by line. Then line must be parse again field by field. The sample input file is as follows:

example.com,username,groupname,homedir,md5password,permission,secondarygroup

I need to extract each of these example.com,username,groupname,homedir,md5password,permission,secondarygroup fields and passed to the different system utilities. How do I write a shell script to automate this task and use the bash shell to parse a text file?
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Linux / Unix AWK: Read a Text File

How do I read a text file using awk pattern scanning and text processing language under Linux / Unix like operating systems?
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Bash Shell Read a Line Field By Field

How do I read a file field-by-field under UNIX / Linux / BSD Bash shell? My sample input data file is as follows:

device1,deviceType,major,minor,permissions
device2,deviceType,major,minor,permissions
...
....
.
deviceN,deviceTypeN,major,minor,permissions

For each line I need to construct and execute a shell command as follows:
/path/to/deviceMaker --context=$1 -m $permissions $device2 $deviceType $major $minor
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How To Use awk In Bash Scripting

How do I use awk pattern scanning and processing language under bash scripts? Can you provide a few examples?
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HowTo: Read a File Line By Line Using awk

How do I read a file line by line using awk utility under Unix / Linux operating systems?
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