Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: OR operator syntax question in AWK script
Top Forums Shell Programming and Scripting OR operator syntax question in AWK script Post 302416067 by cgkmal on Saturday 24th of April 2010 06:02:02 PM
Old 04-24-2010
Hi Franklin,

Thanks for your reply. This works, but is there a way to force awk to see
in specific line and column?

I think something like and IF statement similar to
Code:
if($3 && NR=1) 
{code to replace string}
print $0


I ask in this way because the content in other columns different to column 3 is variable depending the file I´m processing.

Thanks in advance.
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

awk syntax question

Hi there could someone explain what is happening in the following function/statement for me, im just a little confused code = 'BEGIN{FS=","} { printf ("%-11s,%s%s%s,%07.2f,%14s,%-3s\n",$1,substr($2,9,2),substr($2,6,2),substr($ 2,3,2),$9,$10,$12) } this function is called later in the... (2 Replies)
Discussion started by: hcclnoodles
2 Replies

2. Shell Programming and Scripting

yet another awk field syntax question

I am trying to print the remaing fields and field numbers beginning with a field 'xyz' #cat abc test1:test2:xyz:test3:test4:test5 #cat def test1:test2:test3:xyz:test4:test5 desired output is to be able to print NF and any trailing fields separated by':' test3 3 or test4 3 or test5... (4 Replies)
Discussion started by: prkfriryce
4 Replies

3. UNIX for Dummies Questions & Answers

AWK syntax question

Hi, Have to check file names in some given directory. SO, What is the right syntax here: *$3*=="'$object_list'" - just wanted to check if $3 is in the object_list. And also, Do I need so many quotes around? (5 Replies)
Discussion started by: Leo_NN
5 Replies

4. Shell Programming and Scripting

syntax error: `-a' unexpected operator/operand in IF

When i tyr this, it gives me a syntax error...i tried removing quotes,removing spaces,replacing -eq with '='.. Can somebody suggest that is the problem? if ]; then (4 Replies)
Discussion started by: dba.admin2008
4 Replies

5. Shell Programming and Scripting

syntax error in shell test: unknown operator

Hi All, can some one figure out the syntax issue here. How to overcome this? #!/bin/sh $ HFR_MAIL=NO $ PRP_MAIL=NO $ MC_MAIL=NO $ if && && ]; then > echo "NO " > else > echo "YES" > fi test: unknown operator NO $ if && && ]; then > echo "NO" > else > echo "YES" >... (4 Replies)
Discussion started by: shellscripter
4 Replies

6. Shell Programming and Scripting

zsh ternary operator syntax help

Hi, Can someone give me an example of how to use zsh's ternary operator? I tried: # a=1 # c=( a ? "true" : "false" ) and got: zsh: no matches found: ? I'm running zsh 4.2 on RHEL AS 4. Thanks! Paul (1 Reply)
Discussion started by: paul99
1 Replies

7. Shell Programming and Scripting

awk syntax question

Hi I use awk command to delete the first blanc line of a file: awk '/^$/ && !f{f=1;next}1' infile > outfile can somebody please explain me what the last "1'" in !f{f=1;next}1' stands for... Thansk a lot -A (3 Replies)
Discussion started by: aoussenko
3 Replies

8. UNIX for Dummies Questions & Answers

syntax error: invalid arithmetic operator

hi, i have a bash script that i want to receive a a string from another bash file. But because the string has a dot in the middle it gives me an error. The error is in this line: let valor=$1 and the value passed is rules.txt the error is: let: valor=rules.txt: syntax error: invalid... (2 Replies)
Discussion started by: limadario
2 Replies

9. Shell Programming and Scripting

syntax question in regards to nested awk statements

Hello all, I am writing up an input file and I was hoping I could get some guidance as to how to best consolidate these 2 awk statements for 1 while loop. Here's my input file # cat databases.lst #NOTE: These entries are delimited by tabs "\t" #oracleSID name/pass # db11 ... (2 Replies)
Discussion started by: Keepcase
2 Replies

10. Shell Programming and Scripting

Getting syntax error with awk ternary operator

split($7,a," "); date = a; time = a split(date,d,"/"); month = sprintf("%02d",d); day = sprintf("%02d",d); year = 2000 + d % 100 split(time,t,":"); hour=t; min=t hour >= 12? { hour=hour-12; amPm=" PM" } : amPM=" AM" hour == 0? hour=12 time=sprintf("%02d",hour)":"sprintf("%02d",min)amPm ... (4 Replies)
Discussion started by: Michael Stora
4 Replies

LEARN ABOUT DEBIAN

shtool-subst

SHTOOL-SUBST.TMP(1)					      GNU Portable Shell Tool					       SHTOOL-SUBST.TMP(1)

NAME

       shtool-subst - GNU shtool sed(1) substitution operations

SYNOPSIS

       shtool subst [-v|--verbose] [-t|--trace] [-n|--nop] [-w|--warning] [-q|--quiet] [-s|--stealth] [-i|--interactive] [-b|--backup ext]
       [-e|--exec cmd] [-f|--file cmd-file] [file] [file ...]

DESCRIPTION

       This command applies one or more sed(1) substitution operations to stdin or any number of files.

OPTIONS

       The following command line options are available.

       -v, --verbose
	   Display some processing information.

       -t, --trace
	   Enable the output of the essential shell commands which are executed.

       -n, --nop
	   No operation mode. Actual execution of the essential shell commands which would be executed is suppressed.

       -w, --warning
	   Show warning on substitution operation resulting in no content change on every file. The default is to show a warning on substitution
	   operations resulted in no content change on all files.

       -q, --quiet
	   Suppress warning on substitution operation resulting in no content change.

       -s, --stealth
	   Stealth operation. Preserve timestamp on file.

       -i, --interactive
	   Enter interactive mode where the user has to approve each operation.

       -b, --backup ext
	   Preserve backup of original file using file name extension ext.  Default is to overwrite the original file.

       -e, --exec cmd
	   Specify sed(1) command directly.

       -f, --file cmd-file
	   Read sed(1) command from file.

EXAMPLE

	#   shell script
	shtool subst -i -e 's;(c) ([0-9]*)-2000;(c) 1-2001;' *.[ch]

	#    RPM spec-file
	%install
	    shtool subst -v -n 
		-e 's;^(prefix=).*;1 $RPM_BUILD_ROOT%{_prefix};g' 
		-e 's;^(sysconfdir=).*;1 $RPM_BUILD_ROOT%{_prefix}/etc;g' 
		`find . -name Makefile -print`
	    make install

HISTORY

       The GNU shtool subst command was originally written by Ralf S.  Engelschall <rse@engelschall.com> in 2001 for GNU shtool.  It was prompted
       by the need to have a uniform and convenient patching frontend to sed(1) operations in the OpenPKG package specifications.

SEE ALSO

       shtool(1), sed(1).

18-Jul-2008							   shtool 2.0.8 					       SHTOOL-SUBST.TMP(1)
All times are GMT -4. The time now is 01:51 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy