01-04-2010
and this is provided as a module called as flock
10 More Discussions You Might Find Interesting
1. UNIX for Advanced & Expert Users
Hi,
Does anyone seen this error before..
kernel: ENOMEM in journal_alloc_journal_head, retrying.
I encounter this problem on IBM eServers where when the above error appears usually the machine is dead or hanged. Unless a hard reboot is been done. Is this something have to do with the memory... (1 Reply)
Discussion started by: killerserv
1 Replies
2. Shell Programming and Scripting
hi #!/bin/bash
SERVER=10.89.40.35
USER=xyz
PASSWD=xyz
ftp -in $SERVER<<EOF
user $USER $PASSWD
mkdir PPL
cd /path of remote dir
lcd /path of local dir
hash
bin
put <file name>
bye
<<EOF
The above ftp script i have to schedule in crontab at a particular instance of time run daily.... (2 Replies)
Discussion started by: rookie250
2 Replies
3. Shell Programming and Scripting
I am using the following code in a C Shell script to transfer files to a remote server:
ftp -n logxx.xxxx.xxx.xxx.com <<DO_FTP1
quote user $user_name
quote pass $password
ascii
put $js_file_name
bin
put $FinalZipFile
quit
DO_FTP1
This code works great except on those rare occasions... (8 Replies)
Discussion started by: phudgens
8 Replies
4. Shell Programming and Scripting
ok, so I'm trying to add a function to my local script that runs a command on a remote host. The reason why this is needed is that, there are other scripts that run different commands on the same remote host.
so the problem is that many times there are multiple scripts being run on the remote... (1 Reply)
Discussion started by: SkySmart
1 Replies
5. Shell Programming and Scripting
hi, everyone.
My want to execute the shell script below per 10 seconds
PID=`pgrep java`
if
then
/home/java/java
fi
crontab wouldn't help me.
some one can give me suggestions?thanks
---------- Post updated at 07:29 AM ---------- Previous update was at 07:26 AM ----------
... (6 Replies)
Discussion started by: AKB48
6 Replies
6. UNIX for Advanced & Expert Users
Hi ,
When i hit the URL using WGET command ,it is retrying according to the number of retry we mentioned along with Wget command.
my expectation :
1) If 1st try is failed and iam retrying again before 2nd retry i have to check for "xxxxxxx" entry in the log file.
2) If "XXXXXXX" entry is... (4 Replies)
Discussion started by: vinothsekark
4 Replies
7. Shell Programming and Scripting
Hi,
I am new to this forum, could any one please help me to understand the LOCKFILE command with an example and what exactly it is used for and how it is used.
Thanks
Reshu289 (4 Replies)
Discussion started by: Reshu289
4 Replies
8. Shell Programming and Scripting
I need to read a file line by line, then depending on the contents of each line, type in a code that will get written to an array.
The problem I have is when I ask the user to confirm the input code, if it is wrong, how do i Return to ask again?
Any thing I try increments the file to the next... (6 Replies)
Discussion started by: kcpoole
6 Replies
9. UNIX for Advanced & Expert Users
Hi,
I have a process which can run one instance at a time. Currently we have multiple scripts trying to kickoff this process. I wanted to implement the semaphore mechanism to achieve this.
I was going through few examples. The below code seems to be reasonable solution.
... (5 Replies)
Discussion started by: tostay2003
5 Replies
10. Solaris
We encountered these error 2 times(e.g. Solaris 10 with NetWorker installed) with in the month of August, but we couldn't pin point the root cause, it might be bad sector, bad cable or software incompatibility?
Do you experience these issue or please share your understanding about this? Thanks... (0 Replies)
Discussion started by: B@S
0 Replies
LEARN ABOUT OPENSOLARIS
maillock
maillock(3MAIL) User Mailbox Library Functions maillock(3MAIL)
NAME
maillock, mailunlock, touchlock - functions to manage lockfile(s) for user's mailbox
SYNOPSIS
cc [ flag ... ] file ... -lmail [ library ... ]
#include <maillock.h>
int maillock(const char *user, int retrycnt);
void mailunlock(void);
void touchlock(void);
DESCRIPTION
The maillock() function attempts to create a lockfile for the user's mailfile. If a lockfile already exists, and it has not been modified
in the last 5 minutes, maillock() will remove the lockfile and set its own lockfile.
It is crucial that programs locking mail files refresh their locks at least every three minutes to maintain the lock. Refresh the lockfile
by calling the touchlock() function with no arguments.
The algorithm used to determine the age of the lockfile takes into account clock drift between machines using a network file system. A zero
is written into the lockfile so that the lock will be respected by systems running the standard version of System V.
If the lockfile has been modified in the last 5 minutes the process will sleep until the lock is available. The sleep algorithm is to
sleep for 5 seconds times the attempt number. That is, the first sleep will be for 5 seconds, the next sleep will be for 10 seconds, etc.
until the number of attempts reaches retrycnt.
When the lockfile is no longer needed, it should be removed by calling mailunlock().
The user argument is the login name of the user for whose mailbox the lockfile will be created. maillock() assumes that user's mailfiles
are in the ``standard'' place as defined in <maillock.h>.
RETURN VALUES
Upon successful completion, .maillock() returns 0. Otherwise it returns -1.
FILES
/var/mail/* user mailbox files
/var/mail/*.lock user mailbox lockfiles
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|MT-Level |Unsafe |
+-----------------------------+-----------------------------+
SEE ALSO
libmail(3LIB),attributes(5)
NOTES
The mailunlock() function will only remove the lockfile created from the most previous call to maillock(). Calling maillock() for different
users without intervening calls to mailunlock() will cause the initially created lockfile(s) to remain, potentially blocking subsequent
message delivery until the current process finally terminates.
SunOS 5.11 29 Mar 1999 maillock(3MAIL)