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Full Discussion: Grep Data Base on Header
Top Forums Shell Programming and Scripting Grep Data Base on Header Post 302967720 by Don Cragun on Friday 26th of February 2016 09:26:33 PM
Old 02-26-2016
You weren't far off. Your field separator is a comma, not a comma followed by a space. So, if you change your first sed from:
Code:
sed '1!d;s/, /\n/g' $A

to:
Code:
sed '1!d;s/,/\n/g' $A

as in:
Code:
#!/bin/ksh
A=A.txt
B=B.txt
cols=($(sed '1!d;s/,/\n/g' "$A" | grep -nf "$B" | sed 's/:.*$//'))
cut -d ',' -f 1$(printf ",%s" "${cols[@]}") "$A"

it seems to do what you want. You might also want to consider:
Code:
#!/bin/ksh
A='A.txt'
B='B.txt'
awk '
BEGIN {	FS = OFS = ","
}
FNR == NR {
	h[++hc] = $0
	next
}
FNR == 1 {
	for(i = 1; i <= hc; i++) {
		for(j = 1; j <= NF; j++) {
			if($j == h[i]) {
				o[i] = j
				break
			}
		}
		if(j > NF) {
			printf("Header \"%s\" not found in file \"%s\".\n",
			    h[i], FILENAME)
			exit 1
		}
	}
}
{	for(i = 1; i <= hc; i++)
		printf("%s%s", $o[i], (i == hc) ? ORS : OFS)
}' "$B" "$A"

which invokes awk once instead of invoking sed twice, grep once, and cut once; so it should run a bit faster.

As always, if you want to try this on a Solaris/SunOS system, change awk to /usr/xpg4/bin/awk or nawk.
 

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IRSEND(1)								FSF								 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 0.8.7pre1 May 2010 IRSEND(1)
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