Hi All,
I have a script(sample.sh) displaying the output of "dd" command. Now i am using this script in system() call as,
system("sh sample.sh") in an application file.
I want the output of system("sh sample.sh") in the application file itself.
How can i get it?
Many thnaks.... (9 Replies)
I have the following cron task set to run every 15 minutes to ascertain how many users are in the system and append the result to the log.
/home/pronto/cus/whoisinc >> /home/pronto/cus/whoisin.log
This is the whoisinc script
date +"%d-%m-%Y,%k:%M,Pronto Users,`prowho -s | grep -v... (1 Reply)
Hi All,
I have around 900 Select Sql's which I would like to run in an awk script and print the output of those sql's in an txt file.
Can you anyone pls let me know how do I do it and execute the awk script? Thanks. (4 Replies)
HI,
I have a file serverlist in that all host names are placed.
i have written a small script
#./testping
#! /bin/bash
for i in `cat serverlist`
do
ping $i >> output.txt
done
so now it creates a file output.txt till here fine..
now each time i run this script the output file... (4 Replies)
Below script perfectly works, giving below mail output. BUT, I want to make the script mail only if there are any D-Defined/T-Transition/B-Broken State WPARs and also to copy the output generated during monitoring to a temporary log file, which gets cleaned up every week. Need suggestions.
... (4 Replies)
Hi Guys,
I want to redirect the output of 3 scripts to a file and then mail the output of those three scripts.
I used below but it is not working:
OFILE=/home/home1/report1
echo "report1 details" > $OFILE
=/home/home1/1.sh > $OFILE
echo... (7 Replies)
Hi,
I am trying to capture logs of the script in the file as well as on the screen. I have used exec and tee command for this. While using exec command I am getting the correct output in the file but, script output is not getting displayed on the screen as it get executed.
Below is my sample... (14 Replies)
Hi Team -
I"m very new to Shell Scripting so I have a rather novice question. My forte is Windows Batch Scripting so I was just wondering what the Shell Script equivalent is to the DOS command %~n?
%~n is a DOS variable that dispayed the script name.
For instance (in DOS):
REM... (11 Replies)
Hi Guys,
I am very new to shell script and I need your help here to write a script. Actually, I have a script abc.sh which don't get terminated itself. So I need to design a script to run this script, save the output to a file, search for a given string in the output and if it exists send those... (11 Replies)
I'm trying to create a shell script that takes a awk script that I wrote and a filename as an argument. I was able to get that done but I'm having trouble figuring out how to keep the header of the output at the top but sort the rest of the rows alphabetically. This is what I have now but it is... (1 Reply)
Discussion started by: Eric7giants
1 Replies
LEARN ABOUT LINUX
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)