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Full Discussion: awk text editing
Top Forums UNIX for Dummies Questions & Answers awk text editing Post 302906974 by Higgo on Wednesday 25th of June 2014 03:13:42 AM
Old 06-25-2014
Question awk text editing

Dear all,

I'm starting to learn programming, and I'm having some problem with awk text editing.

I'm having a huge text file, and my goal is to print "something" before every 4th row starting from the second row.

File example:
Code:
AAAAA
BBBBBB
CCCCC
DDDDD
AAAAAAA
BBBBBBBB
CCCCCCC
DDDDDDD
AAAAAAAAA
BBBBBBBBBB
CCCCCCCCC
DDDDDDDDD
etc.

The desired output would be the following:
Code:
AAAAA
XXXXXBBBBBB
CCCCC
DDDDD
AAAAAAA
XXXXXBBBBBBBB
CCCCCCC
DDDDDDD
AAAAAAAAA
XXXXXBBBBBBBB
CCCCCCCCC
DDDDDDDDD
etc.

I have written an awk one liner, but its not working, it only print the wanted letters before to the last BBB.

This is what i ran in command line:
Code:
b=`wc -l input.txt | awk '{print $1}'`; for ((i=2; i<=$b ; i+=4)); do awk -v i=$i '{if (NR==i) print "NANE"$0; else print $0}' input.txt > output.txt; done

I would really appreciate your help!

Thanks,
Higgo

Last edited by Scrutinizer; 06-25-2014 at 04:18 AM.. Reason: CODE tags
 

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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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