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Full Discussion: AWK Script Issue insert newline for a regular expression match
Top Forums Shell Programming and Scripting AWK Script Issue insert newline for a regular expression match Post 302475869 by jaita on Tuesday 30th of November 2010 06:30:08 AM
Old 11-30-2010
Network Awk script issue : range of regular expression
Thanks Ctgsnb ,

I tried below code and it also worked well

sed -e 's/\(^ *pin[^ ]*\)/#\1/g' ro.lib | tr '#' '\n' > temp1

Now I am having issue with range of the regular patterns to be matched

For example having a file like this

Code:
 
File1
 
##############
 
pin RXA {
input 
output 
}
 
pin RXB {
input 
output 
}
 
pin RXC {
input 
output 
}
 
pin RXD {
input 
output 
}
 
pin RXE {
input 
output 
}
 
pin RXF {
input 
output 
}

Now I need to match range of the regular expression like RXB to RXE and delete their corresponding blocks

Code:
 
Output 
 
pin RXA {
input 
output 
}
 
pin RXF {
input 
output 
}

I tried to use below script
Code:
sed -e '/RXB/,/RXE/d'

but will not delete the whole content of the RXE Block till RXE Regular expression line it will match and input , output and } will remain as it is

One way is to Remove the black lines between blocks of RXB to RXE
like this
Code:
 
input
 
pin RXA {
input 
output 
}
 
pin RXB {
input 
output 
}
 pin RXC {
input 
output 
}
 pin RXD {
input 
output 
}
 pin RXE {
input 
output 
}
 
pin RXF {
input 
output 
}

and use the script

Code:
 
sed -e '/RXB/,/^$/d' input

but how to do that in both the situations for matching with range of regular expression and deleting the blank lines for the range of regular expression matches
 

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LEARN ABOUT NETBSD

lpbb

LPBB(4) 						   BSD Kernel Interfaces Manual 						   LPBB(4)

NAME

     lpbb -- parallel port I2C bit-banging interface

SYNOPSIS

     device iicbus
     device iicbb

     device lpbb
     device iic

DESCRIPTION

     The lpbb driver supports the Philips official I2C parallel bit-banging interface.

					      LS05 pin 14 (Vcc) o      -------
								|      |     |
		 +--+--+---------------------+--+--+------------+------+-o 1 |
		 |  |  |		     |	|  |	       ===.1uF | +5V |
       -------- [R][R][R] 3x10K       3x10K [R][R][R]	LS05	|      |     |
       |      |  |  |  |		     |	|  |	pin 7 o-+------+-o 2 |
       | 12 o-+--+  |  |   3| 4	     |	|  |	(Gnd)	       | GND |
       | 17 o-+-----|--|----| >o-------------+--|--|--------------+    |     |
       |      |     |  |    |/	      8 /|9	|  |	 10 /|11  +----+-o 3 |
       | 15 o-+-----+--|--------------o< |------+--|------o< |----+    | SCL |
       |      |        |   1| 2	|	   |	    |	       |     |
       |  9 o-+--------|----| >o-------------------+--------------+----+-o 4 |
       |      |        |    |/				  6 /|5   |    | SDA |
       | 11 o-+--------+----------------------------------o< |----+    -------
       | 10 o-+-+					    |		4-pin
       | 13 o-+-+--oGND 					     Connector
       | 25 o-+-+      ------------------ Part List --------------------------
       --------        | 1 - .1 uF capacitor   | 6 - 10K 5% resistors	     |
       25-pin male D   | 1 - 4-pin connector   | 1 - 25-pin male D connector |
       connector to PC | 1 - 74LS05 open collector hex inverter 	     |
       printer port    -------------------------------------------------------

SEE ALSO

     iicbb(4), iicbus(4), ppbus(4)

HISTORY

     The lpbb manual page first appeared in FreeBSD 3.0.

AUTHORS

     This manual page was written by Nicolas Souchu.

BSD
								 October 25, 1998							       BSD
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