Hi
we have one function which is used to append data the file in exclusive lock mode in aperl script.
This script is executed by multiple threads at the same time.
accessing the same file.this script runs throught the day.
sometimes the file2.txt size is getting reduced.
for eg from 10 M to 2 M.
Code:
fi(file1.txt);
f2(file2.txt);
sub f1
{
my ($file) = @_;
my $data="haitetsing";
open(FileHandler,">>$file") ;
--flock function is called
print FileHandler $data;
--unlock funciton is called
}
query:-
here we did not close the Filehandle ,is it making the script to remove the some contents of file.
Moderator's Comments:
Please use next time code tags for your code and data
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===========================================
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Discussion started by: bhas85
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LEARN ABOUT SUNOS
script
script(1) User Commands script(1)NAME
script - make record of a terminal session
SYNOPSIS
script [-a] [filename]
DESCRIPTION
The script utility makes a record of everything printed on your screen. The record is written to filename. If no file name is given, the
record is saved in the file typescript. See WARNINGS.
The script command forks and creates a sub-shell, according to the value of $SHELL, and records the text from this session. The script ends
when the forked shell exits or when Control-d is typed.
OPTIONS
The following option is supported:
-a Appends the session record to filename, rather than overwriting it.
NOTES
script places everything that appears on the screen in filename, including prompts.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWcsu |
+-----------------------------+-----------------------------+
|CSI |Enabled |
+-----------------------------+-----------------------------+
SEE ALSO attributes(5)WARNINGS
script can pose a security risk when used in directories that are writable by other users (for example, /tmp), especially when run by a
privileged user, that is, root. Be sure that typescript is not a link before running script.
SunOS 5.10 30 Jan 2004 script(1)
01-19-2012
