how to parse a large file for information

I need to get information from a master file that contains user names and machines.
The 4th field contains the usernames and the 9th field contains systems that the user has access to.
My task is to create a list in 2 columns ( user host) that will list a user and every machines he/she has access to. The username will be repeated for each machine in the file.
i  am looking for a simple script that can accomplish this.Can any scripting guru please help?
Thanks in advance.
nesiuna_1Asked:
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simon3270Connect With a Mentor Commented:
Please try:

  awk -F: 'BEGIN{printf "%s\t%s\n","User","Hostname"}{split($9,hosts,",");for (h in hosts) printf "%s\t%s\n",$4,hosts[h]}' infile
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omarfaridCommented:
initially, you could do:

awk '{print $1, $9}' filename

if you can provide sample file data then script can be improved
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TintinCommented:
Please give some sample input/output.
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nesiuna_1Author Commented:
this is the input file:
+gshepher:Yi/mOb6QeRcaU:5032:Greg Shepherd:/home/gshepher:/usr/bin/tcsh::staff,develop:ap1-bb15,ap1-bb15ua
t,ap1-chase,ap1-chasebb,ap1-cvmssm,ap1-gpcorr,ap1-gpmor,ap1-gprc
i need to parse the 4th field and the 9th field.
The 4th field is the username and the 9th field is the hostnames
what i need is a printout in this format:
User                                       Hostname
user1                                      host1
user1                                      host2
user2                                      host1
user2                                      host2
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TintinCommented:
awk -F, '{printf "%-10s\t%s\n",$4,$9}' inputfile
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simon3270Commented:
awk -F: 'BEGIN{printf "%s\t%s\n","User","Hostname"}{printf "%s\t%s\n",$4,$9}' inputfile

(-F: because colon is the field separator)
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nesiuna_1Author Commented:
The output of this script is this:
Felix Roytfeld  ap8-qa,perfap1-dv,perfdb1-dv,perfwb1-dv,sjcapp05

But what i am looking for something like this:
User                       Host
Felix Roytfeld        ap8-qa
Felix Roytfeld        perfap1-dv
Felix Roytfeld        perfb1-dv
Felix Roytfeld        sjcapp05

How can i the program to print out in this format?
Thanks
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nesiuna_1Author Commented:
Thank you very much for your professional help.
i really appreciate the timely response.
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