awk evaluating a string as a math expression Post: 302841175

Sponsored Content

Top Forums Shell Programming and Scripting awk evaluating a string as a math expression Post 302841175 by avi.levi on Wednesday 7th of August 2013 05:12:29 AM

08-07-2013

Registered User

Quote:

Originally Posted by rajamadhavan

perl solution

Code:

$ cat file
5+1
5*9
6/4
7-1

$ cat file | perl -nle 'print eval($_)'
6
45
1.5
6

OK guys.
I am sorry, I did not make my question clear enough.
My file does not look so simple, it is more complex.
Here's the real input:

Code:

wire        [32-1:0]       jerry_AWADDR;
wire                       jerry_AWVALID;
wire         [4-1:0]       jerry_AWCACHE;
wire         [4-1:0]       jerry_AWID;
wire         [4-1:0]       jerry_AWLEN;
wire         [2-1:0]       jerry_AWLOCK;
wire         [3-1:0]       jerry_AWPROT;
wire         [3-1:0]       jerry_AWSIZE;
wire         [2-1:0]       jerry_AWBURST;
wire        [64-1:0]       jerry_WDATA;
wire         [4-1:0]       jerry_WID;
wire                       jerry_WLAST;
wire         [8-1:0]       jerry_WSTRB;
wire                       jerry_WVALID;
wire                       jerry_BREADY;

Now, I would like to make it look like this:

Code:

wire        [31:0]       jerry_AWADDR;
wire                       jerry_AWVALID;
wire         [3:0]       jerry_AWCACHE;
wire         [3:0]       jerry_AWID;
wire         [3:0]       jerry_AWLEN;
wire         [1:0]       jerry_AWLOCK;
wire         [2:0]       jerry_AWPROT;
wire         [2:0]       jerry_AWSIZE;
wire         [1:0]       jerry_AWBURST;
wire        [63:0]       jerry_WDATA;
wire         [3:0]       jerry_WID;
wire                       jerry_WLAST;
wire         [7:0]       jerry_WSTRB;
wire                       jerry_WVALID;
wire                       jerry_BREADY;

I hope this makes it clearer.

Thank you.

avi.levi

View Public Profile for avi.levi

Find all posts by avi.levi

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

String math help needed

#!/usr/bin/ksh #LOGFILE=/var/opt/ixos/log/notification_warning.log #DAT1=/var/opt/ixos/monitor/percentages.dat #DAT2=/var/opt/ixos/monitor/mountpoints.dat THRESHOLD=75 #`rm $DAT1` #`rm $DAT2` `bdf | grep /var/opt/ixos | awk '{ print $4 }' | cut -f1 -d"%" > test.dat` `bdf | grep...

2. Shell Programming and Scripting

How can awk search a string without using regular expression?

Hello, Awk seem treat the pattern as regular expression, how can awk search not using regular expression? e.g. just represent for "", not "A" or "a" . I don't want to add backslash .

3. UNIX for Dummies Questions & Answers

awk logic and math help

Hi, My file has 2 fields and millions of lines. variableStep chrom=Uextra span=25 201 0.5952 226 0.330693 251 0.121004 276 0.0736858 301 0.0646982 326 0.0736858 401 0.2952 426 0.230693 451 0.221004 476 0.2736858 Each field either has a...

4. Shell Programming and Scripting

awk math operation on two files

Hi, I need your help. I've got two files and i need to add 2nd line after occurrence of "Group No X" from data2.txt to 3rd line (after occurrence of "Group No X") from data1.txt. There is the same number of "Groups" in both files and the numbers of groups have the same pattern. data1.txt Group...

5. Shell Programming and Scripting

Need help with AWK math

I am trying to do some math, so that I can compare the average of six numbers to a variable. Here is what it looks like (note that when I divide really big numbers, it isn't a real number): $ tail -n 6 named.stats | awk -F\, '{print$1}' 1141804 1140566 1139429 1134210 1084682 895045...

6. Shell Programming and Scripting

awk math and csv output

Hi I have this list 592;1;Z:\WB\DOCS;/FS3_100G/FILER112/BU/MPS/DOCS;;;;\\FILER112\BUMPS-DOCS\;580,116,544,878 Bytes;656,561 ;77,560 592;2;Z:\WB\FOCUS;/FS3_100G/FILER112/BU/MPS/FOCUS;;;;\\FILER112\BUMPS-FOCUS\;172,430 Bytes;6 ;0 ...

7. Solaris

Korn shell - evaluating string gives wrong results due to limitations

Anyone ever seen this? Someone mentioned this the other day.... If you do, for instance, in korn shell, echo $(5.2+2.5), it gives the result of 6 regardless. Can't remember why but it was the limitation of the korn shell.

8. Shell Programming and Scripting

Count math using awk

Hi expert, I have log : TOTAL-TIME : 2125264636 DATA-BYTES-DOWN : 3766111307032 DATA-BYTES-UP : 455032157567 DL = (3766111307032/2125264636)/1024 = 1.73 UL = (455032157567/2125264636)/1024 = 0.21 I want the result : TOTAL = 1.94 ...

9. Shell Programming and Scripting

Math count %memory using awk

Hi expert, i have log this: Memory: 74410384 Memory: 75831176 Memory: 77961232 Memory: 77074656 Memory: 76086160 Memory: 77128592 Memory: 78045384 Memory: 76696040 Memory: 72401176 Memory: 72520016 Memory: 72137016 Memory: 73175832 Memory: 73034528 Memory: 71770736 Memory:...

10. UNIX for Dummies Questions & Answers

awk If expression - Return string if not true

Hi, I have the following txt file List_With_Duplicates.txt; a,1,1 b,3,4 c,5,2 d,6,1 e,3,3 f,3,7 When I run the command awk -F ',' '{if($2==$3){print $1","$2","$3}}' List_With_Duplicates.txt I get the following output; a,1,1 e,3,3 This works! as I've compared the 2nd & 3rd...

LEARN ABOUT SUSE

igawk

IGAWK(1)							 Utility Commands							  IGAWK(1)

NAME

       igawk - gawk with include files

SYNOPSIS

       igawk [ all gawk options ] -f program-file [ -- ] file ...
       igawk [ all gawk options ] [ -- ] program-text file ...

DESCRIPTION

       Igawk is a simple shell script that adds the ability to have ``include files'' to gawk(1).

       AWK programs for igawk are the same as for gawk, except that, in addition, you may have lines like

	      @include getopt.awk

       in your program to include the file getopt.awk from either the current directory or one of the other directories in the search path.

OPTIONS

       See gawk(1) for a full description of the AWK language and the options that gawk supports.

EXAMPLES

       cat << EOF > test.awk
       @include getopt.awk

       BEGIN {
	    while (getopt(ARGC, ARGV, "am:q") != -1)
		 ...
       }
       EOF

       igawk -f test.awk

SEE ALSO

       gawk(1)

       Effective AWK Programming, Edition 1.0, published by the Free Software Foundation, 1995.

AUTHOR

       Arnold Robbins (arnold@skeeve.com).

Free Software Foundation					    Nov 3 1999								  IGAWK(1)

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

String math help needed

Discussion started by: petachi

2. Shell Programming and Scripting

How can awk search a string without using regular expression?

Discussion started by: 915086731

3. UNIX for Dummies Questions & Answers

awk logic and math help

Discussion started by: wyarosh

4. Shell Programming and Scripting

awk math operation on two files

Discussion started by: killerbee

5. Shell Programming and Scripting

Need help with AWK math

Discussion started by: brianjb

6. Shell Programming and Scripting

awk math and csv output

Discussion started by: nakaedu

7. Solaris

Korn shell - evaluating string gives wrong results due to limitations

Discussion started by: psychocandy

8. Shell Programming and Scripting

Count math using awk

Discussion started by: justbow

9. Shell Programming and Scripting

Math count %memory using awk

Discussion started by: justbow

10. UNIX for Dummies Questions & Answers

awk If expression - Return string if not true

Discussion started by: mmab

LEARN ABOUT SUSE

igawk