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Top Forums Shell Programming and Scripting Grep for the most negative number Post 302615413 by sdl27789 on Thursday 29th of March 2012 12:37:42 PM
Old 03-29-2012
Grep for the most negative number

Hello, I am trying to write a bash script which will give me the most negative number. Here is an example input:
Code:
 Ce         3.7729752124       -4.9505731588       -4.1061257680
 Ce        -6.9156611391       -0.5991784762        7.3051893138
 Ce         7.6489739875        0.3513020731       -4.1428887409
  O        -2.0367674927        6.4059113030        4.2342869120
  O         1.8496529300        6.8212696160        0.4577675608

I used
Code:
grep -- "-*"

which returns all lines with negative numbers, what I really need is for it to look and find (in this instance) -6.9156611391. Then add +6.9156611391 to all the numbers in the file ex.
Code:
Ce         3.7729752124       -4.9505731588       -4.1061257680

to
Code:
Ce        10.6886363515       1.9650879...          2.80953537...

All lines do not necessarily contain number nor do they start with Ce or O,
however all numbers that need changed have the 3 set format (x,y,z coordinates)

Thanks in advance

Last edited by Scrutinizer; 03-29-2012 at 01:44 PM.. Reason: please Use [code] tags [/code], thank you..
 

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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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