shell script or awk for automated fields checking.

[chz013]

I have a record that is like this below; records like this
are delimited by --- lines; I need to write a bash script
that automatically checks for almost all the fields
defined on each row;
1- Is it difficult to write a shell script that processes
these records and checks each field in each record ?
Do you have an example script that reads a file that
contain all these records and make checks on them ?
2 - Is it better to write an awk script over shell script
if I only need to check about 10 - 12 fields in each record ? Do you have an example script that reads a file
that contain all these records and make checks on them ?

Any comments or help is appreciated.
Advance thanks

----------------------------------------------------------
Record Checksum: 110
Record Number: 1
Reference Number: 1
Record Type: 2 => MTC

IM Field Content:
IM field: (001) => IM
EVEN/ODD bit: (1) => odd
IM Id: 316

SType: 0x00 => LS
CNumber Field Content:
L: 1
Ext: (1) => No
Tnum: (001) => No
PId: (0001) => No
D:

ONum Field Content:
L: 6
Ext: (1) => No
Tnum: (001) => No
PId: (0001) => No
D: 1234567890

TNum Field Content:
L: 6
Ext: (1) => No
Tnum: (001) => No
PId: (0001) => No
D: 0987654321

CTime: 0x0000 =>
S Du: 0
C Du: 0x1 => 1
L ID: 5
C Id: 0
Cause for T: 1 => N Re
O.t g ID: 0

Diag hex dump:
00000000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00000010: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
----------------------------------------------------------

 

[Annihilannic]

It depends a lot on what you mean by "checks each field in each record". What kind of things are you checking for?

I would definitely use awk for this in any case. Taking one of the more complex examples, to check whether the Tnum: value under the Onum: field content was set to "No", you could use:

[tt]awk '
/Field Content:/ { FIELDCONTENT=$1 }
FIELDCONTENT == "ONum" && $1 == "Tnum:" && $NF != "No" {
print "Onum:Tnum is not No, it is " $NF
}
' recordsfile[/tt]

$1 refers to the first field on the row. $NF refers to the last field on the row. By default fields are separated by white space (spaces and tabs).

Annihilannic.