awk command help Post: 302923216

8 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

assign a command line argument and a unix command to awk variables

Hi , I have a piece of code ...wherein I need to assign the following ... 1) A command line argument to a variable e.g origCount=ARGV 2) A unix command to a variable e.g result=`wc -l testFile.txt` in my awk shell script When I do this : print "origCount" origCount --> I get the...

2. Shell Programming and Scripting

awk/sed Command : Parse parameter file / send the lines to the ksh export command

Sorry for the duplicate thread this one is similar to the one in https://www.unix.com/shell-programming-scripting/88132-awk-sed-script-read-values-parameter-files.html#post302255121 Since there were no responses on the parent thread since it got resolved partially i thought to open the new...

3. UNIX for Dummies Questions & Answers

Basic awk question...getting awk to act on $1 of the command itself

I have a script problem that I am not able to solve due my very limited understanding of unix/awk. This is the contents of test.sh awk '{print $1}' From the prompt if I enter: ./test.sh Hello World I would expect to see "Hello" but all I get is a blank line. Only then if I enter "Hello...

4. Shell Programming and Scripting

awk command for simple join command but based on 2 columns

input1 a_a a/a 10 100 a1 a_a 20 200 b1 b_b 30 300 input2 a_a a/a xxx yyy a1 a1 lll ppp b1 b_b kkk ooo output a_a a/a 10 100 xxx yyy

5. Shell Programming and Scripting

awk command in script gives error while same awk command at prompt runs fine: Why?

Hello all, Here is what my bash script does: sums number columns, saves the tot in new column, outputs if tot >= threshold val: > cat getnon0file.sh #!/bin/bash this="getnon0file.sh" USAGE=$this" InFile="xyz.38" Min="0.05" # awk '{sum=0; for(n=2; n<=NF; n++){sum+=$n};...

6. Shell Programming and Scripting

awk command to compare a file with set of files in a directory using 'awk'

Hi, I have a situation to compare one file, say file1.txt with a set of files in directory.The directory contains more than 100 files. To be more precise, the requirement is to compare the first field of file1.txt with the first field in all the files in the directory.The files in the...

7. Shell Programming and Scripting

Multiple command execution inside awk command during xml parsing

below is the output xml string from some other command and i will be parsing it using awk cat /tmp/alerts.xml <Alert id="10102" name="APP-DS-ds_ha-140018-componentFailure-S" alertDefinitionId="13982" resourceId="11427" ctime="1359453507621" fixed="false" reason="If Event/Log Level(ANY) and...

8. Shell Programming and Scripting

Pass awk field to a command line executed within awk

Hi, I am trying to pass awk field to a command line executed within awk (need to convert a timestamp into formatted date). All my attempts failed this far. Here's an example. It works fine with timestamp hard-codded into the command echo "1381653229 something" |awk 'BEGIN{cmd="date -d...

LEARN ABOUT LINUX

export

EXPORT(P)						     POSIX Programmer's Manual							 EXPORT(P)

NAME

       export - set the export attribute for variables

SYNOPSIS

       export name[=word]...

       export -p

DESCRIPTION

       The  shell shall give the export attribute to the variables corresponding to the specified names, which shall cause them to be in the envi-
       ronment of subsequently executed commands. If the name of a variable is followed by = word, then the value of that variable shall be set to
       word.

       The export special built-in shall support the Base Definitions volume of IEEE Std 1003.1-2001, Section 12.2, Utility Syntax Guidelines.

       When -p is specified, export shall write to the standard output the names and values of all exported variables, in the following format:

	      "export %s=%s
", <name>, <value>

       if name is set, and:

	      "export %s
", <name>

       if name is unset.

       The  shell  shall  format the output, including the proper use of quoting, so that it is suitable for reinput to the shell as commands that
       achieve the same exporting results, except:

	1. Read-only variables with values cannot be reset.

	2. Variables that were unset at the time they were output need not be reset to the unset state if a value  is  assigned  to  the  variable
	   between the time the state was saved and the time at which the saved output is reinput to the shell.

       When no arguments are given, the results are unspecified.

OPTIONS

       See the DESCRIPTION.

OPERANDS

       See the DESCRIPTION.

STDIN

       Not used.

INPUT FILES

       None.

ENVIRONMENT VARIABLES

       None.

ASYNCHRONOUS EVENTS

       Default.

STDOUT

       See the DESCRIPTION.

STDERR

       The standard error shall be used only for diagnostic messages.

OUTPUT FILES

       None.

EXTENDED DESCRIPTION

       None.

EXIT STATUS

       Zero.

CONSEQUENCES OF ERRORS

       Default.

       The following sections are informative.

APPLICATION USAGE

       None.

EXAMPLES

       Export PWD and HOME variables:

	      export PWD HOME

       Set and export the PATH variable:

	      export PATH=/local/bin:$PATH

       Save and restore all exported variables:

	      export -p > temp-fileunset a lot of variables... processing. temp-file

RATIONALE

       Some  historical  shells  use  the  no-argument	case  as the functional equivalent of what is required here with -p. This feature was left
       unspecified because it is not historical practice in all shells, and some scripts may rely on the now-unspecified results on  their  imple-
       mentations.  Attempts  to  specify  the	-p output as the default case were unsuccessful in achieving consensus. The -p option was added to
       allow portable access to the values that can be saved and then later restored using; for example, a dot script.

FUTURE DIRECTIONS

       None.

SEE ALSO

       Special Built-In Utilities

COPYRIGHT

       Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2003 Edition, Standard for Information Technol-
       ogy -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of
       Electrical and Electronics Engineers, Inc and The Open Group. In the event of any discrepancy between this version and  the  original  IEEE
       and  The  Open Group Standard, the original IEEE and The Open Group Standard is the referee document. The original Standard can be obtained
       online at http://www.opengroup.org/unix/online.html .

IEEE
/The Open Group						       2003								 EXPORT(P)