Hi,
Please find the attached scriplet and suggest me to fix the bug in this.
-----------------------------------
noofdirs=`ls *.tar | wc -l`
if ; then
let i=1
while ( $i <= $noofdirs ) ;
do
echo $i
mkdir $i
file1=`ls *.tar | head -1`
mv $file1 $i
i =... (2 Replies)
Hi Guys,
I am new to scripting
I have written a code to compare strings,but I am getting some Exception
Code snippet:
MODE="D"
if ]; then
. $file1
fi
Error:
./BatchJobs.sh: [[: execute permission denied
I have given all Execute permissions to the script(chmod 755... (2 Replies)
Hi All,
I've to compare the number of records present in a file against its trailer count.
for ex:
rec_cnt=$(awk 'END{print NR}' file.txt)
trl_cnt=$(tail -1 file.txt| cut -c1-6)
problem is trailer is appended with zero's and while comparing it is giving problem.
i.e, rec_cnt=9 and... (1 Reply)
i want to take position 19-24(only first line) from all files and need to compare any duplication is there or not.
If duplication, then i have to print the file names.
I have written to take the characters from 19-24 from all files. but how to compare ?
... (1 Reply)
Hi, I would like to compare the 25th position of the file with the character '(' and if it is not equal then it would generate a mail. I have used the below if condition, however it is always executing the code within if, even the comparison is expected to return false.
if
Please help me... (1 Reply)
Hi,
I am having difficulty to compare a string in a file against a date from a a table and print the latest date. Below are the values.
String in File : 2009-12-02 00:37:51
Value Table : 2010-01-10-02.00.49.294758
I have to compare both the values ( Ignore the Microsecond in the table... (5 Replies)
have written a simple shell script to do some automation work. Basically the script searches for all the files in the current path and if the file is a specified one, it does some action. Below are the relevant lines ---
#!/bin/bash
1.for i in ls *
2.do
3.if
4.then .... //do something... (3 Replies)
I have a string like ab or abc of whatever length. But i want to know whether another string ( for example, abcfghijkl, OR a<space> bcfghijkl ab<space> cfghijkl OR a<space>bcfghijkl OR ab<space> c<space> fghijkl ) starts with ab or abc... space might existing on the longer string... If so, i... (1 Reply)
Hi all,
Currently i am using
if( $0~/ NOT / && $0~/ NULL /)
{
.................
}
to check if the input record contains "NOT" and "NULL". But in some cases "NOT" and "NULL" are preceded and followed by tab. How do i find compare for these fields as well? (3 Replies)
Hi,
I want to do caseless string comparision using test command
for eg: Ind_f="y"
test "$Ind_f" == "y|Y"
i tried , ** , nothing worked.
any thoughts on how to do case insensitive string comparison using test command without converting to any particular case using typeset or tr? (8 Replies)
Discussion started by: Kulasekar
8 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)