12-28-2011
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.
10 More Discussions You Might Find Interesting
1. Programming
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)
Discussion started by: kelogs1347
1 Replies
2. Shell Programming and Scripting
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)
Discussion started by: ystee
3 Replies
3. Shell Programming and Scripting
How can i write a script.?
which lists all X process and gets the start minute of each of them.
thanks (1 Reply)
Discussion started by: Anteus
1 Replies
4. UNIX for Dummies Questions & Answers
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)
Discussion started by: victor.s
3 Replies
5. Shell Programming and Scripting
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)
Discussion started by: timmywong
9 Replies
6. Shell Programming and Scripting
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)
Discussion started by: jockx
8 Replies
7. Shell Programming and Scripting
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)
Discussion started by: ooilinlove
3 Replies
8. Shell Programming and Scripting
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)
Discussion started by: ernesto
4 Replies
9. Shell Programming and Scripting
Hello,
I have a list of files, an example below:
-rw-r--r-- 1 smf_oper esg 910773 Jul 6 12:52 am1slc02_ACS_201607061242571_20346.cdr
-rw-r--r-- 1 smf_oper esg 995838 Jul 6 12:52 am1slc01_ACS_201607061243125_19895.cdr
-rw-r--r-- 1 smf_oper esg 557235 Jul 6 12:52... (5 Replies)
Discussion started by: nms
5 Replies
10. Shell Programming and Scripting
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)
Discussion started by: shunya
5 Replies
MKFIFO(3) Linux Programmer's Manual MKFIFO(3)
NAME
mkfifo - make a FIFO special file (a named pipe)
SYNOPSIS
#include <sys/types.h>
#include <sys/stat.h>
int mkfifo(const char *pathname, mode_t mode);
DESCRIPTION
mkfifo() makes a FIFO special file with name pathname. mode specifies the FIFO's permissions. It is modified by the process's umask in
the usual way: the permissions of the created file are (mode & ~umask).
A FIFO special file is similar to a pipe, except that it is created in a different way. Instead of being an anonymous communications chan-
nel, a FIFO special file is entered into the file system by calling mkfifo().
Once you have created a FIFO special file in this way, any process can open it for reading or writing, in the same way as an ordinary file.
However, it has to be open at both ends simultaneously before you can proceed to do any input or output operations on it. Opening a FIFO
for reading normally blocks until some other process opens the same FIFO for writing, and vice versa. See fifo(7) for nonblocking handling
of FIFO special files.
RETURN VALUE
On success mkfifo() returns 0. In the case of an error, -1 is returned (in which case, errno is set appropriately).
ERRORS
EACCES One of the directories in pathname did not allow search (execute) permission.
EEXIST pathname already exists. This includes the case where pathname is a symbolic link, dangling or not.
ENAMETOOLONG
Either the total length of pathname is greater than PATH_MAX, or an individual filename component has a length greater than
NAME_MAX. In the GNU system, there is no imposed limit on overall filename length, but some file systems may place limits on the
length of a component.
ENOENT A directory component in pathname does not exist or is a dangling symbolic link.
ENOSPC The directory or file system has no room for the new file.
ENOTDIR
A component used as a directory in pathname is not, in fact, a directory.
EROFS pathname refers to a read-only file system.
CONFORMING TO
POSIX.1-2001.
SEE ALSO
mkfifo(1), close(2), open(2), read(2), stat(2), umask(2), write(2), mkfifoat(3), fifo(7)
COLOPHON
This page is part of release 3.25 of the Linux man-pages project. A description of the project, and information about reporting bugs, can
be found at http://www.kernel.org/doc/man-pages/.
GNU
2008-06-12 MKFIFO(3)