Do I require to rewrite the again to add the fifo to it?
I'm not sure what you're asking...
The idea is to remove the output file, and replace it with a fifo
Then, whenever something tries to open and replace that file, you'll be able to read from it.
This is assuming it's truncating and replacing the file in the manner I expect.
If it isn't then, like methyl said, "reliable processing of transient data is impossible in Shell". I'd extend that to mean that processing transient data isn't something you should be doing, and if there isn't any other way to get the data, that's a severe flaw in whatever program you're using.
@James Owen
In this context when working with basic tools, trying to capture the contents of a transient temporary file is not a sensible system design option. Neither is trying to read any file which may be open for write by another application.
Btw. "fifo" is a unix technical term for a Named Pipe.
What other design options do you have available which involve using more sophisticated tools?
Your suggestion of fifo is allowing to create a back up file which will store data and allows me to keep the data and process it which is not what I am after. All I want is to read from one and write to output file.
I am not sure if this will help but may be try and use another output file (this will be temporary file) which will allow you to store the data then may be using the AWK code you have process the data from this file. This is similar to FIFO approach but this is how I usually process files.
I am writing a script to kick off a process to gather logs on multiple nodes in parallel using "&". These processes create individual log files. Which I would like to filter and convert in CSV format after they are complete. I am facing following issues:
1. Monitor all Processes parallelly.... (5 Replies)
Hi All,
Need your help on how i can sum up the values. I have a file that contains the count and the time. I wanted to add up all the first column having the same datestamp. Please see below.
INPUT
1721 2015-12-26 00:01
1440 2015-12-26 00:02
1477 2015-12-26 00:02
411 ... (4 Replies)
How to check log size every 10min. by script (can use crontab)
if log size not change with alert "Log not update"
Base run on SunOS 5.8 Generic_Virtual sun4u sparc SUNW,SPARC-Enterprise
logFiles="log1.log log2.log"
logLocation="/usr/home/test/log/"
Out put.
Tue Jan 31... (3 Replies)
Hi, I've been trying to develop a script that performs the parsing of a log every 1 minute and then generating some statistics. I'm fairly new to programming and this is why I come to ask if I can lend a hand.
this is my log:
xxxx 16/04/2012 17:00:52 - xxxx714 - E234 - Time= 119 ms.... (8 Replies)
Anyone knows how to use AWK to achieve the following
Sun Feb 12 00:41:01-00:41:59 Success:2 Fail:2
Sun Feb 12 00:42:01-00:42:59 Success:1 Fail:2
Sun Feb 12 01:20:01-01:20:59 Success:1 Fail:2
Mon Feb 13 22:41:01-22:41:59 Success:1 Fail:1
log file:
Success
Success
Fail
Fail
... (9 Replies)
Hello All,
i am a newbie and need some help when reading a csv file in a bourne shell script. I want to read 10 lines, then wait for a minute and then do a reading of another 10 lines and so on in the same way. I want to do this till the end of file.
Any inputs are appreciated
... (3 Replies)
Is there a simple command to find or check if a file has been modified within the last minute? The mtime parameter from find cmd only allow days.
I am trying to avoid timestamp parsing and do some sort of comparison as I'm real beginner at scripts. If this is the only way, any help is greatly... (3 Replies)
here's the problem, i have two processes that i need to run and both process should be run at a total of 1 minute each. how do i do that? and one more here's what the processes do: the 1st process show the '+" sign infinitely while the 2nd process displays the "-" infinitely. how could i count the... (1 Reply)