how can i compare the latest log file with the current time..
consider i am running a script "a.sh" at 09:00
( function of the script a.sh is to update the database )
this script is going to create logfile if the script is sucess
in case of failure it is not going to create logfile..
... (0 Replies)
hi is there any way i can display a countdown time needed to run a script? like load a counter at the beginning of the script with the estimated time and display the counter decrementing till it finishes running the script? (3 Replies)
Hi
I have a script that performs a process on a file.
I want to know how to include a function to run a batch of files?
Here is my script
#!/bin/bash
#----------------------------------------------------------------------------------------------------------------------
#This... (2 Replies)
Dear Forum experts
I have the below script which I made to run under bash shell, it runs perfectly for low records number, let us say like 100000. when I put all records (3,000,000), it's takes hours
can you please suggest anything to optimize or to run in different way :-|
{OFS="|";... (6 Replies)
Unix Gurus,
I have a requirement where the shell script needs to do specific tasks after certain period of time.
Daily we receive few files in a particular folder. The script does the file renaming, pass parameters to run some web services and pushes to remote FTP location.
But my... (3 Replies)
HI Guys,
I want to find out the script running time and subtract from sleeptime.
My Script Below Give me error :-
#!/usr/bin/ksh
timeout=100
start=$SECONDS
sleep 20
end=$SECONDS
echo "Time: $((end - start)) "
ScTime = $((end - start)) (1 Reply)
Dear all,
I wonder if it is possible that we can run the script
from time to time..I meant, it should repeat the
sourcing of the script by itself? In my case, I need
to source this script manually from time to time,
like once in every 10 minutes.
emily, (2 Replies)
OS version : RHEL 6.5
Below is an excerpt from /etc/security/limits.conf file for OS User named appusr in our server
appusr soft nproc 2047
appusr hard nproc 16384
What will happen if appusr has already spawned 2047 processes and wants to spawn 2048th process ?
I just want to know... (3 Replies)
I am running a script which will read the data from fail line by line and call the Java program by providing the arguments from the each line.
The Java code is working fast for few records and for some records its getting hanged not providing response for morethan one hour.
Currently am... (4 Replies)
Discussion started by: dineshaila
4 Replies
LEARN ABOUT SUSE
unbuffer
UNBUFFER(1) General Commands Manual UNBUFFER(1)NAME
unbuffer - unbuffer output
SYNOPSIS
unbuffer program [ args ]
INTRODUCTION
unbuffer disables the output buffering that occurs when program output is redirected from non-interactive programs. For example, suppose
you are watching the output from a fifo by running it through od and then more.
od -c /tmp/fifo | more
You will not see anything until a full page of output has been produced.
You can disable this automatic buffering as follows:
unbuffer od -c /tmp/fifo | more
Normally, unbuffer does not read from stdin. This simplifies use of unbuffer in some situations. To use unbuffer in a pipeline, use the
-p flag. Example:
process1 | unbuffer -p process2 | process3
CAVEATS
unbuffer -p may appear to work incorrectly if a process feeding input to unbuffer exits. Consider:
process1 | unbuffer -p process2 | process3
If process1 exits, process2 may not yet have finished. It is impossible for unbuffer to know long to wait for process2 and process2 may
not ever finish, for example, if it is a filter. For expediency, unbuffer simply exits when it encounters an EOF from either its input or
process2.
In order to have a version of unbuffer that worked in all situations, an oracle would be necessary. If you want an application-specific
solution, workarounds or hand-coded Expect may be more suitable. For example, the following example shows how to allow grep to finish pro-
cessing when the cat before it finishes first. Using cat to feed grep would never require unbuffer in real life. It is merely a place-
holder for some imaginary process that may or may not finish. Similarly, the final cat at the end of the pipeline is also a placeholder
for another process.
$ cat /tmp/abcdef.log | grep abc | cat
abcdef
xxxabc defxxx
$ cat /tmp/abcdef.log | unbuffer grep abc | cat
$ (cat /tmp/abcdef.log ; sleep 1) | unbuffer grep abc | cat
abcdef
xxxabc defxxx
$
BUGS
The man page is longer than the program.
SEE ALSO
"Exploring Expect: A Tcl-Based Toolkit for Automating Interactive Programs" by Don Libes, O'Reilly and Associates, January 1995.
AUTHOR
Don Libes, National Institute of Standards and Technology
1 June 1994 UNBUFFER(1)