Pipe to awk to variable Post: 302552217

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Is it better to grep and pipe to awk, or to seach with awk itself

This may just be a lack of experience talking, but I always assumed that when possible it was better to use a commands built in abilities rather than to pipe to a bunch of commands. I wrote a (very simple) script a while back that was meant to pull out a certain error code, and report back what...

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Hi , I would like to assign command (with pipe) output to a variable. The code is as follows. The goal of the code is to get the last folder folder with a particular name pattern. myDate=`ls | grep 2009 | tail -1` echo "myDate=" $myDate However, in the presence of the pipe, the code...

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Hey all, I've tried this for quite some time now and haven't figured it out... I was hoping one of you shell scripters could help a newbie out :) I am trying to take the 1st parameter of my script and use it as the search pattern for my for loop #!/usr/bin/sh set -vx REGEX=$1 ...

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Hi, I am trying to run this command: ED_CMD="$Access_OPS $ED_Logs_Dir/access | $lgrep -v $Access_Err" $lgrep $ED_CMD However, i am getting an error "Failed to open |: Broken pipe at " My question is how to put a pipe within a variable. Thanks. John.

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using awk for setting variable but change the output of this variable within awk

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<tr><th align=right valign=top>Faulty_Part</th><td align=left valign=top>readhat version 6.0</td></tr> <tr><th align=right valign=top>Submit_Date</th><td align=left valign=top>2011-04-28 02:08:02</td></tr> .......(a long string) I want to get all the field between "left valign=top>" and "...

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Hey fellas, I wrote an script which its output is like this: a 1 T a 1 T a 2 A b 5 G b 5 G b 5 G I wanna print $1 $2 and the total number of $2 value as the third column and after that $3. Sth like this: a 1 2 T a 2 1 A b 5 3 G I know how to do it with a given input...

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Hello all, quick question: is it possible to pass input into AWK BOTH with a pipe AND a file at the same time, something like this: command .......|awk '.................' FILEIN > fileout All I read says either one or the other, not both, is it at all possible? And how would the...

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Help on passing an input variable to the voronota program (after third pipe)

Dear UNIX forum members, I am using macbook pro 13 (2015 edition) with MAC OS Mojave and am trying to write the shell script where when it is run through terminal it asks for an input (in the code below an input variable is domains) and then that input becomes capital letter or letters which...

LEARN ABOUT OSX

sleep

SLEEP(1)						    BSD General Commands Manual 						  SLEEP(1)

NAME

     sleep -- suspend execution for an interval of time

SYNOPSIS

     sleep seconds

DESCRIPTION

     The sleep command suspends execution for a minimum of seconds.

     If the sleep command receives a signal, it takes the standard action.

IMPLEMENTATION NOTES

     The SIGALRM signal is not handled specially by this implementation.

     The sleep command will accept and honor a non-integer number of specified seconds (with a '.' character as a decimal point).  This is a non-
     portable extension, and its use will nearly guarantee that a shell script will not execute properly on another system.

EXIT STATUS

     The sleep utility exits 0 on success, and >0 if an error occurs.

EXAMPLES

     To schedule the execution of a command for x number seconds later (with csh(1)):

	   (sleep 1800; sh command_file >& errors)&

     This incantation would wait a half hour before running the script command_file.  (See the at(1) utility.)

     To reiteratively run a command (with the csh(1)):

	   while (1)
		   if (! -r zzz.rawdata) then
			   sleep 300
		   else
			   foreach i (`ls *.rawdata`)
				   sleep 70
				   awk -f collapse_data $i >> results
			   end
			   break
		   endif
	   end

     The scenario for a script such as this might be: a program currently running is taking longer than expected to process a series of files, and
     it would be nice to have another program start processing the files created by the first program as soon as it is finished (when zzz.rawdata
     is created).  The script checks every five minutes for the file zzz.rawdata, when the file is found, then another portion processing is done
     courteously by sleeping for 70 seconds in between each awk job.

SEE ALSO

     nanosleep(2), sleep(3)

STANDARDS

     The sleep command is expected to be IEEE Std 1003.2 (``POSIX.2'') compatible.

HISTORY

     A sleep command appeared in Version 4 AT&T UNIX.

BSD
								  April 18, 1994							       BSD

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Is it better to grep and pipe to awk, or to seach with awk itself

Discussion started by: DeCoTwc

2. Shell Programming and Scripting

Assign command (with pipe) output to a variable

Discussion started by: jeff_cen

3. Shell Programming and Scripting

Trying to embed a pipe with a variable IN a variable

Discussion started by: Keepcase

4. Shell Programming and Scripting

a pipe within a variable

Discussion started by: john_prince