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Top Forums Shell Programming and Scripting awk to change specific string to new value if found in text file Post 302993056 by cmccabe on Monday 6th of March 2017 08:40:06 AM
Old 03-06-2017
awk to change specific string to new value if found in text file

I am trying to use awk to change a specific string in a field, if it is found, to another value. In the tab-delimited file the text in bold in $3 contains the string 23, which is always right before a ., if it is present.

I am trying to change that string to X, keeping the formatting and the name of the file the same. The awk below seems to change the formatting and may not be the best way. Thank you Smilie.

file
Code:
Input Variant	Errors	Chromosomal Variant	Coding Variant(s)
NM_004992.3:c.274G>T		NC_000023.10:g.153297761C>A	XM_005274683.1:c.-6G>T	XM_005274682.1:c.-6G>T	XM_005274681.1:c.274G>T	LRG_764t2:c.274G>T	NM_004992.3:c.274G>T	LRG_764t1:c.310G>T	NM_001110792.1:c.310G>T

awk
Code:
awk -F'\t' '{ $3 = ($3 == "23" ? X : $3) } 1' OFS="\t" file

desired output
Code:
Input Variant	Errors	Chromosomal Variant	Coding Variant(s)
NM_004992.3:c.274G>T		NC_0000X.10:g.153297761C>A	XM_005274683.1:c.-6G>T	XM_005274682.1:c.-6G>T	XM_005274681.1:c.274G>T	LRG_764t2:c.274G>T	NM_004992.3:c.274G>T	LRG_764t1:c.310G>T	NM_001110792.1:c.310G>T


Last edited by cmccabe; 03-06-2017 at 09:40 AM.. Reason: fixed format
 

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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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