Hi guys,
firstly I'm working on SunOS 5.10 Generic_125100-10 sun4u sparc SUNW,Sun-Fire-V240
I've made a script to compress two directory and then send them to an other server via ftp. This is working very well.
Inside theis script I decide to log usefull data for troubleshooting in case of... (7 Replies)
I have two file in a Directory.I want a script which will compare the Size of Two file.
Can Anyone Help me on this:
linasplg11:/opt/dataout/kk/linasplg11 # cat size
-rwxrwxrwx 1 root root 16658 Jan 8 13:58 lina_IP_SIP_1231325621210.xml
-rwxr-xr-x 1 root root 16672 Jan 8 14:30... (1 Reply)
Hi,
I need unix code to check the size of a file. for example if the size of the file in A folder is more than 1BM, then i have to move that particular file in to B folder whenever I run that particular script.
regards,
Srinivas. (7 Replies)
Hi,
I'm using PSFTP to transfer files from one machine to a virtual machine with UBUNTU OS installed on it.
I'm trying to find a way to make sure the files that I'm uploading / downloading are being uploaded/ downloaded properly.
I want to compare the size of the local file and the remote... (0 Replies)
I am pretty new to scripting, so I appreciate your advice in advance.
The problem:
100 directories each containing 2 files that have the same extension with random names. The only attribute that discriminates the files is size. I would like to write a script that compares the files for size... (6 Replies)
Dear users,
I've been looking for a way to overwrite files only if both have the same size, how could I do this? any help is very appreciated.
Best regards,
Gery (5 Replies)
I want to compare two files, and search for items that are in both. Then override the first file with that containing only elements which were in both files. I imagine something with diff, but not sure.
File 1
One
Two
Three
Four
Five
File 2
One
Three
Four
Six
Eight (2 Replies)
I have ssh password less auth enable & script does the job well as well
#/bin/bash
for i in `cat ip`
do
scp /etc/resolv.conf root@$ip
done
But I need to take backup of the file i will overwrite .. is there any simple way ?
Kindly respond (5 Replies)
Sometimes when I boot, my system goes into emergency mode.
I then use Clonezilla to restore an image.
Usually the image is older than the current date.
This is part of a backup script that runs as a startup program.
cd /home/andy/bin/
zip -u -q Ubuntu_Scripts.zip *.sh *.rb *.c *.py... (22 Replies)
Discussion started by: drew77
22 Replies
LEARN ABOUT SUSE
ipc::sharedmem
IPC::SharedMem(3pm) Perl Programmers Reference Guide IPC::SharedMem(3pm)NAME
IPC::SharedMem - SysV Shared Memory IPC object class
SYNOPSIS
use IPC::SysV qw(IPC_PRIVATE S_IRUSR S_IWUSR);
use IPC::SharedMem;
$shm = IPC::SharedMem->new(IPC_PRIVATE, 8, S_IRWXU);
$shm->write(pack("S", 4711), 2, 2);
$data = $shm->read(0, 2);
$ds = $shm->stat;
$shm->remove;
DESCRIPTION
A class providing an object based interface to SysV IPC shared memory.
METHODS
new ( KEY , SIZE , FLAGS )
Creates a new shared memory segment associated with "KEY". A new segment is created if
o "KEY" is equal to "IPC_PRIVATE"
o "KEY" does not already have a shared memory segment associated with it, and "FLAGS & IPC_CREAT" is true.
On creation of a new shared memory segment "FLAGS" is used to set the permissions. Be careful not to set any flags that the Sys V IPC
implementation does not allow: in some systems setting execute bits makes the operations fail.
id Returns the shared memory identifier.
read ( POS, SIZE )
Read "SIZE" bytes from the shared memory segment at "POS". Returns the string read, or "undef" if there was an error. The return value
becomes tainted. See shmread.
write ( STRING, POS, SIZE )
Write "SIZE" bytes to the shared memory segment at "POS". Returns true if successful, or false if there is an error. See shmwrite.
remove
Remove the shared memory segment from the system or mark it as removed as long as any processes are still attached to it.
is_removed
Returns true if the shared memory segment has been removed or marked for removal.
stat
Returns an object of type "IPC::SharedMem::stat" which is a sub-class of "Class::Struct". It provides the following fields. For a
description of these fields see you system documentation.
uid
gid
cuid
cgid
mode
segsz
lpid
cpid
nattach
atime
dtime
ctime
attach ( [FLAG] )
Permanently attach to the shared memory segment. When a "IPC::SharedMem" object is attached, it will use memread and memwrite instead
of shmread and shmwrite for accessing the shared memory segment. Returns true if successful, or false on error. See shmat.
detach
Detach from the shared memory segment that previously has been attached to. Returns true if successful, or false on error. See shmdt.
addr
Returns the address of the shared memory that has been attached to in a format suitable for use with "pack('P')". Returns "undef" if
the shared memory has not been attached.
SEE ALSO
IPC::SysV, Class::Struct
AUTHORS
Marcus Holland-Moritz <mhx@cpan.org>
COPYRIGHT
Version 2.x, Copyright (C) 2007, Marcus Holland-Moritz.
Version 1.x, Copyright (c) 1997, Graham Barr.
This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
perl v5.12.1 2010-04-26 IPC::SharedMem(3pm)