Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: awk search for max and min while ignoring special character
Top Forums Shell Programming and Scripting awk search for max and min while ignoring special character Post 302950865 by Don Cragun on Wednesday 29th of July 2015 01:41:18 PM
Old 07-29-2015
For two fields and assuming that line 1 in a file could also be your special character, you could try:
Code:
awk '
NF > 1 {if(!nf++) {
		m1 = M1 = $1
		m2 = M2 = $2
	} else {if($1 + 0 < m1)	m1 = $1
		if($1 + 0 > M1)	M1 = $1
		if($2 + 0 < m2)	m2 = $2
		if($2 + 0 > M2)	M2 = $2
	}
}
END {	print "MinColumn1 MaxColumn1 MinColumn2 MaxColumn2"
	printf("%10s %10s %10s %10s\n", m1, M1, m2, M2)
}' file

which, with your sample input produces the output:
Code:
MinColumn1 MaxColumn1 MinColumn2 MaxColumn2
 -123.7820  -119.9950    39.5520    42.0009

If you want to try this on a Solaris/SunOS system, change awk to /usr/xpg4/bin/awk.

PS. Just to be clear, the above code produces the same output if the input file is:
Code:
>
-122.2840   42.0009
-119.9950   41.1777
>
-123.7540   39.5520
-123.7820   39.6872

instead of the provided sample, while the other suggestions in this thread don't seem to produce the desired output in this case. It isn't clear to me from the provided description of the input file format whether or not this matters for the submitter's real world data.
Last edited by Don Cragun; 07-29-2015 at 03:04 PM.. Reason: Add PS.
 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Awk search for max and min field values

hi, i have an awk script and I managed to figure out how to search the max value but Im having difficulty in searching for the min field value. BEGIN {FS=","; max=0} NF == 7 {if (max < $6) max = $6;} END { print man, min} where $6 is the column of a field separated by a comma (3 Replies)
Discussion started by: Kirichiko
3 Replies

2. UNIX for Dummies Questions & Answers

Iterate a min/max awk script over time-series temperature data

I'm trying to iterate a UNIX awk script that returns min/max temperature data for each day from a monthly weather data file (01_weath.dat). The temperature data is held in $5. The temps are reported each minute so each day contains 1440 temperature enteries. The below code has gotten me as far as... (5 Replies)
Discussion started by: jgourley
5 Replies

3. Shell Programming and Scripting

Ignoring special character while running a job

I am running a program as follows (using uniface) "chngpasswd.sh drg_ldos1 manager64 manager65 SMART2AP" in which manager64 , manager65 is a variables and keeps on changing, above command works fine but in case we have special characters it fails as shown below "chngpasswd.sh drg_ldos1... (3 Replies)
Discussion started by: lalitpct
3 Replies

4. Shell Programming and Scripting

Find min.max value if matching columns found using AWK

Input_ File : 2 3 4 5 1 1 0 1 2 1 -1 1 2 1 3 1 3 1 4 1 6 5 6 6 6 6 6 7 6 7 6 8 5 8 6 7 Desired output : 2 3 4 5 -1 1 4 1 6 5 6 8 5 8 6 7 (3 Replies)
Discussion started by: vasanth.vadalur
3 Replies

5. Shell Programming and Scripting

AWK script - extracting min and max values from selected lines

Hi guys! I'm new to scripting and I need to write a script in awk. Here is example of file on which I'm working ATOM 4688 HG1 PRO A 322 18.080 59.680 137.020 1.00 0.00 ATOM 4689 HG2 PRO A 322 18.850 61.220 137.010 1.00 0.00 ATOM 4690 CD ... (18 Replies)
Discussion started by: grincz
18 Replies

6. Shell Programming and Scripting

Average, min and max in file with header, using awk

Hi, I have a file which looks like this: FID IID MISS_PHENO N_MISS N_GENO F_MISS 12AB43131 12AB43131 N 17774 906341 0.01961 65HJ87451 65HJ87451 N 10149 906341 0.0112 43JJ21345 43JJ21345 N 2826 906341 0.003118I would... (11 Replies)
Discussion started by: kayakj
11 Replies

7. Shell Programming and Scripting

Get the min avg and max with awk

aaa: 3 ms aaa: 2 ms aaa: 5 ms aaa: 10 ms .......... to get the 3 2 5 10 ...'s min avg and max something like min: 2 ms avg: 5 ms max: 10 ms (2 Replies)
Discussion started by: yanglei_fage
2 Replies

8. Shell Programming and Scripting

awk script to find min and max value

I need to find the max/min of columns 1 and 2 of a 2 column file what contains the special character ">". I know that this will find the max value of column 1. awk 'BEGIN {max = 0} {if ($1>max) max=$1} END {print max}' input.file But what if I needed to ignore special characters in the... (3 Replies)
Discussion started by: ncwxpanther
3 Replies

9. Shell Programming and Scripting

How to get min and max values using awk?

Hi, I need your kind help to get min and max values from file based on value in $5 . File1 SP12.3 stc 2240806 2240808 + ID1_N003 ID2_N003T0 SP12.3 sto 2241682 2241684 + ID1_N003 ID2_N003T0 SP12.3 XE 2239943 2240011 + ID1_N003 ID2_N003T0 SP12.3 XE 2240077 2241254 + ID1_N003 ... (12 Replies)
Discussion started by: redse171
12 Replies

10. Shell Programming and Scripting

awk Sort 2d histogram output from min(X,Y) to max(X,Y)

I've got Gnuplot-format 2D histogram data output which looks as follows. 6.5 -1.25 10.2804 6.5404 -1.25 10.4907 6.58081 -1.25 10.8087 6.62121 -1.25 10.4686 6.66162 -1.25 10.506 6.70202 -1.25 10.3084 6.74242 -1.25 9.68256 6.78283 -1.25 9.41229 6.82323 -1.25 9.43078 6.86364 -1.25 9.62408... (1 Reply)
Discussion started by: chrisjorg
1 Replies

LEARN ABOUT LINUX

irsend

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)
All times are GMT -4. The time now is 04:50 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy