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Top Forums Shell Programming and Scripting awk to parse section of csv into array Post 303032144 by cmccabe on Tuesday 12th of March 2019 08:27:49 PM
Old 03-12-2019
awk to parse section of csv into array

In the awk below I am trying to parse the Sample Name below the [Data] section. The values that are extracted are read into array s(each value in a row seperated by a space) which will be used later in a bash script. The awk does execute but no values are printed. I am also not sure how to print in a row each value seperated by a space.
Maybe pipe the output to paste -s -d, - to put a space in-place of a comma in k? Thank you Smilie.

awk
Code:
s=$(awk -F'.' -v section="[Data]" -v k="Sample Name"  '  
$0==section{ f=1; next }  ## flag when section is found in file
/\[/{ f=0; next }        ## # For any lines with [ disable the flag     
f && $2==k{ print $0 })' file.csv  ## # If flag is set and first field is the key print k=value

file.csv
Code:
[Settings]		
Adapter	AGATCGGAAGAGCACACGTCTGAACTCCAGTCA	
AdapterRead2	AGATCGGAAGAGCGTCGTGTAGGGAAAGAGTGT	
		
[Data]		
Sample_ID	Sample_Name	Sample_Plate
Sample_1	19-0000-Last-First	
Sample_2	19-0001-La-Fi	
Sample_3	19-0003-L-F	
Sample_4	19-0004-Las-Fir

desired output ---- contents of s ----
Code:
19-0000-Last-First 19-0001-La-Fi 19-0003-L-F 19-0004-Las-Fir

 

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IRSEND(1)							   User Commands							 IRSEND(1)

NAME
irsend - basic LIRC program to send infra-red commands SYNOPSIS
irsend [options] DIRECTIVE REMOTE CODE [CODE...] DESCRIPTION
Asks the lircd daemon to send one or more CIR (Consumer Infra-Red) commands. This is intended for remote control of electronic devices such as TV boxes, HiFi sets, etc. DIRECTIVE can be: SEND_ONCE - send CODE [CODE ...] once SEND_START - start repeating CODE SEND_STOP - stop repeating CODE LIST - list configured remote items SET_TRANSMITTERS - set transmitters NUM [NUM ...] SIMULATE - simulate IR event REMOTE is the name of a remote, as described in the lircd configuration file. CODE is the name of a remote control key of REMOTE, as it appears in the lircd configuration file. NUM is the transmitter number of the hardware device. For the LIST DIRECTIVE, REMOTE and/or CODE can be empty: LIST "" "" - list all configured remote names LIST REMOTE "" - list all codes of REMOTE LIST REMOTE CODE - list only CODE of REMOTE The SIMULATE command only works if it has been explicitly enabled in lircd. -h --help display usage summary -v --version display version -d --device use given lircd socket [/var/run/lirc/lircd] -a --address=host[:port] connect to lircd at this address -# --count=n send command n times EXAMPLES
irsend LIST DenonTuner "" irsend SEND_ONCE DenonTuner PROG-SCAN irsend SEND_ONCE OnkyoAmpli VOL-UP VOL-UP VOL-UP VOL-UP irsend SEND_START OnkyoAmpli VOL-DOWN ; sleep 3 irsend SEND_STOP OnkyoAmpli VOL-DOWN irsend SET_TRANSMITTERS 1 irsend SET_TRANSMITTERS 1 3 4 irsend SIMULATE "0000000000000476 00 OK TECHNISAT_ST3004S" FILES
/etc/lirc/lircd.conf Default lircd configuration file. It should contain all the remotes, their infra-red codes and the corresponding timing and wave- form details. DIAGNOSTICS
If lircd is not running (or /var/run/lirc/lircd lacks write permissions) irsend aborts with the following diagnostics: "irsend: could not connect to socket" "irsend: Connection refused" (or "Permission denied"). SEE ALSO
The documentation for lirc is maintained as html pages. They are located under html/ in the documentation directory. lircd(8), mode2(1), smode2(1), xmode2(1), irrecord(1), irw(1), http://www.lirc.org. irsend 0.9.0-pre1 October 2010 IRSEND(1)
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