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Full Discussion: Masking algorithm
Top Forums Shell Programming and Scripting Masking algorithm Post 302951051 by n78298 on Friday 31st of July 2015 07:23:42 PM
Old 07-31-2015
Masking algorithm

I have a requirement of masking few specific fields in the UNIX file. The details are as following-

File is fixed length file with each record of 250 charater length.

2 fields needs to be masked – the positions are 21:30 and 110:120

The character by character making needs to be done which means one character in this field (21:30 and 110:120) should be replaced with some another character.

The replacement patterns should be kept in a separate file. For example
Code:
A:B
B:C

Which means A should be replaced with B , B with C and so on.

Last edited by Don Cragun; 07-31-2015 at 10:09 PM.. Reason: Add CODE and ICODE tags.
 

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jdbreg(8)						      System Manager's Manual							 jdbreg(8)

NAME
jdbreg - Registers hosts in the DHCP dynamic databases. SYNOPSIS
/usr/sbin/jdbreg [-d] [-e] [-f character] [-s] [-l | -n] [-o] [-w] filename... OPTIONS
Deletes the records whose keys are implied by the input file(s). Uses character as the field separator. The default is the pipe | charac- ter. Display all currently registered hosts. DESCRIPTION
The jdbreg program registers (or removes) hosts for configuration by DHCP. When the registered_hosts_only policy is in effect, the server configure only clients whose MAC addresses are so registered. When this policy is not in effect, registering hosts has no effect. Each record to be loaded is terminated by a newline, and the fields within each record delimited by default with the pipe (|) character, although this may be changed with the -f command line option. The fields within the data file(s) to be loaded are as follows: MAC address MAC address type MAC address length (octets) RESTRICTIONS
Because the database used by join does not support multiuser concurrently, applications that write to it, lock the entire database. This means that you cannot use jdbreg while joind is running. The converse is also true. FILES
SEE ALSO
Commands: joind(8) jdbreg(8)
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