I am readinga file lin by line and based craeting a arry of unique elemenst from the second column of the line. However when i coem out of the while loop my array becomes empty , can eny one tell me what I would be doing wrong
#!/bin/bash
logfile="./mylog.dat"
begin=100
end="$(( $begin +... (5 Replies)
I have a process run weekly where I must convert data formats for about thirty files. I read a text file that provides all of the filenames and switch settings.
My perl code is:
for ($j = 1; $j <= $k; $j++)
{
open(FIN2,$fin2) || die "open: $!";
do other stuff
}
Every once in... (2 Replies)
Hello, I'm a computer science major and I'm having problems dealing with file names with spaces in them. Particularly I'm saving a file name in a variable and then using the variable in a compare function i.e.
a='te xt.txt'
b='file2.txt'
cmp $a $b
If anyone could help me with this particular... (10 Replies)
I'm currently making a card dealing program, it is suppose to display a list of cards like this:
"Ace of Heart, is red"
"Two of Heart, is red"
.
.
"Ace of Spade, is black"
and so on for all suits and numbers.
here is my current code:
#include <stdio.h>
#include <stdlib.h>
#include... (3 Replies)
Hello, I am working on a coding project for a class and to test the program I have created, I have come up with 100 different test cases. The program takes four text files as input, so each of the test cases is contained in a folder with four files.
I have a folder called 'tests', within which... (1 Reply)
I write this bit of code to calculate the mean and variance for all the files in one directory and print the mean and variance in a separate folder but with the same file name.
FILES="data/*"
for X in $FILES
do
name=$(basename $X)
awk '{x=$0; s+=$0; n++}
END{mean=s/n; for (i in x){ss... (20 Replies)
Korn Shell
I have hundreds of small files like below created every day. A midnight cron job moves them to the location /u04/temp/logs
But sometimes I have to manually move these files based a certain dates or time.
I have two basic requirements
1.Using mv command I want to move all .dat... (2 Replies)
I have an edge-list with nodes, edge.txt
A B
B J
J H
C A
G H
G A
A C
K G
I have another file which tells me which of these nodes are important, input.txt
G
C
A (3 Replies)
I'm writing my own simple XML parser as an experiment. It's a lot more complicated than it's supposed to be.
Things supposedly forbidden in XML comments happen all the time in the wild. You're never, ever supposed to find -- inside <!-- xml comments --> but in practice, you don't just find... (2 Replies)
Discussion started by: Corona688
2 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)