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Full Discussion: Changes of text in a file
Top Forums Shell Programming and Scripting Changes of text in a file Post 302886185 by wisecracker on Thursday 30th of January 2014 02:43:46 AM
Old 01-30-2014
Longhand OSX 10.7.5, default bash terminal:-
Code:
Last login: Thu Jan 30 07:38:52 on ttys000
AMIGA:barrywalker~> yourtext="18011324      ; serial number YYMMDDNN
> 
> m.abcd.com.             600     IN      A       10.10.128.154"
AMIGA:barrywalker~> echo "$yourtext"
18011324      ; serial number YYMMDDNN

m.abcd.com.             600     IN      A       10.10.128.154
AMIGA:barrywalker~> yourtext="${yourtext:0:$[ ( ${#yourtext} - 2 ) ]}00"
AMIGA:barrywalker~> echo "$yourtext"
18011324      ; serial number YYMMDDNN

m.abcd.com.             600     IN      A       10.10.128.100
AMIGA:barrywalker~> _

EDIT:
Drat, just seen the 5 and 20 in there too, but using this method is just as easy....

Last edited by wisecracker; 01-30-2014 at 03:52 AM.. Reason: See above...
 

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iscc(7) 						 Miscellaneous Information Manual						   iscc(7)

NAME
iscc - serial communications interface SYNOPSIS
controller iscc0 at isa0 DESCRIPTION
An onboard Zilog 8530 DUART provides AXPvme-based Single Board Computers with console (CON) and auxiliary (AUX) serial communications ports. Both serial communications ports can operate at baud rates from B50 to B38400, excluding B134 (see tty(7)). On AXPvme Single Board Computers configured with a graphics head as the system console, the CON serial communications port (/dev/tty01) is available for use by application programs as an additional communications port. In the absence of a graphics head, the CON serial communications port (/dev/console) becomes the system console. When used as the serial system console, the CON serial communications port always operates at 9600 BPS, 8-bits, and no parity. Regardless of system console, the AUX serial communications port (/dev/tty00) is always available for use by application programs. RESTRICTIONS
Data communications equipment attached to the CON serial communications port must be set to 9600 BPS, 8-bits, no parity when configured as the serial system console. The iscc terminal driver enforces this restriction. No modem control is supported for either the CON or AUX serial communications ports. FILES
console terminal local terminal local terminal RELATED INFORMATION
console(7), devio(7), tty(7), MAKEDEV(8) delim off iscc(7)
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