mjhjmtu

I have a file in which I want to print all the lines between two patterns. Pattern1 = # Begin TRACE A Data and Pattern 2 =# Done Data $capture, I want to print every line between pattern1 and pattern2.

File 1:

# Lower Limit 
LIMIT_FLAG=0
LIMIT_POINT0=2884982910000.000000 -102800 -1
LIMIT_POINT1=2892982910000.000000 -102800 -1

# Limit Done

# Begin SPA Emission Mask
MASK SEGMENTS=0
MASK REFERENCE MODE=0
MASK REFERENCE LEVEL=0
MASK CENTER FREQUENCY=0
**
# SPA Emission Mask Done

# Begin SPA Data
<AP P_DATA>

** # Begin TRACE A Data ** 
P_0=-103.976000 , 2884.982910 MHz 
P_1=-103.580000 , 2884.997456 MHz 
P_2=-103.748000 , 2885.012001 MHz 
P_3=-104.020000 , 2885.026547 MHz 
P_4=-103.472000 , 2885.041092 MHz 
P_5=-103.720000 , 2885.055638 MHz 
P_6=-103.752000 , 2885.070183 MHz 
P_7=-103.512000 , 2885.084729 MHz 
P_8=-103.664000 , 2885.099274 MHz 
P_9=-103.948000 , 2885.113820 MHz 
P_10=-103.720000 , 2885.128365 MHz 
P_11=-103.480000 , 2885.142911 

# Done Data $capture
# Begin SPA Emission Mask
MASK SEGMENTS=0
MASK REFERENCE MODE=0
MASK REFERENCE LEVEL=0
MASK CENTER FREQUENCY=0

# End SPA Data
<APP_DATA_END>

# End SPA Data
<APP_DATA_END>

Expected output:

-103.976000 2884.982910
-103.580000 2884.997456
-103.748000 2885.012001
-104.020000 2885.026547
-103.472000 2885.041092
....
....

No extra lines or blank lines should be printed but just the lines data.

sed -n '/# Begin TRACE A Data/,/# Done Data $capture/s/ MHz//;s/,/ /;s/.*=//p;' filename

• 
  /pattern1/,/pattern2/ selects only the lines from the first to the second pattern, so everything inside is executed only for the range


• 
  s/ MHz// removes the trailing unit


• 
  s/,/ / replaces the comma with a whitespace


• 
  s/.*=//p removes everything upto the = and prints the pattern, so only lines in the range with that = will get printed (option -n suppresses default output)

Actually, for your example data, you could also do

sed -n 's/ MHz//;s/.*=//;s/,/ /p'

because only the lines you want contain a comma.

Awk solution:

awk '/# Begin TRACE A Data/ f = 1; next 
 /# Done Data $capture/ f = 0 
 NF && f gsub(/^P.+=' file

The output:

-103.976000 2884.982910 
-103.580000 2884.997456 
-103.748000 2885.012001 
-104.020000 2885.026547 
-103.472000 2885.041092 
-103.720000 2885.055638 
-103.752000 2885.070183 
-103.512000 2885.084729 
-103.664000 2885.099274 
-103.948000 2885.113820 
-103.720000 2885.128365 
-103.480000 2885.142911