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Top Forums UNIX for Dummies Questions & Answers No error in awk... Post 302969973 by jlliagre on Wednesday 30th of March 2016 07:58:33 PM
Old 03-30-2016
To detect random input, I'd rather add this test after getline:

Code:
if(FREQ !=0 && FREQ+0==0) { printf("Invalid frequency: [%s]\n",FREQ); exit 1 ; }

Note that all your lines are ended by a semicolon but this is not needed with awk. Unlike with C, an end of line is already ending a command so the semicolon is only required to delimit multiple commands on a single line.
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USRP_FLEX_ALL(1)						   User Commands						  USRP_FLEX_ALL(1)

NAME
usrp_flex_all - FLEX protocol demodulator SYNOPSIS
usrp_flex_all [options] DESCRIPTION
linux; GNU C++ version 4.6.2; Boost_104601; UHD_003.003.001-666a2f0 OPTIONS
-h, --help show this help message and exit -f FREQ, --freq=FREQ Set receive frequency to FREQ [default=929512500.0] -a ADDRESS, --address=ADDRESS Address of UHD device, [default=addr=192.168.10.2] -A ANTENNA, --antenna=ANTENNA select Rx Antenna where appropriate --rx-gain=RX_GAIN set receive gain in dB (default is midpoint) -c Hz, --calibration=Hz set frequency offset to Hz -v, --verbose -l, --log log flowgraph to files (LOTS of data) -F FROM_FILE, --from-file=FROM_FILE read samples from file instead of USRP --nchan=nchan set to number of channels in capture file SEE ALSO
usrp_flex_band(1) usrp_flex(1) usrp_flex_all 3.5 December 2011 USRP_FLEX_ALL(1)
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