8 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
My question is basically as the title says. How can I check a user inputted string is only certain characters long (for example, 3 characters long) and how do I check a user inputted string only contains certain characters (for example, it should only contain the characters 'u', 'a', 'g', and 'c')... (4 Replies)
Discussion started by: Eric1
2. Shell Programming and Scripting
This was taken down recently because it appeared to be homework, but it isn't. It's for a script I am working on at work. Thanks for the help.
How do you check that user inputs (arguments 1 and 2) are both numbers and are at least 5 digits in length? (2 Replies)
Discussion started by: thibodc
3. UNIX for Dummies Questions & Answers
When I use who it shows who is online and from what time they logged in but is there a way I can see the last time someone was logged on if they aren't online? Is it with the who command?
thx (11 Replies)
Discussion started by: subway69
I'm a little rusty with HACMP, but wanted to find out if it is possible to remove a disk heartbeat network from a running HACMP cluster.
Reason is, I need to migrate all the SAN disk, so the current heartbeat disk will be disappearing. Ideally, I'd like to avoid taking the cluster down to... (2 Replies)
Discussion started by: cmcbugg
5. UNIX for Advanced & Expert Users
in a multi user system of 3 users X,Y,Z, if i know that X is presently online, is it possible to determine for how long has he been online? i mean the time duration (3 Replies)
Discussion started by: arindamlive
I'm writing a KSH shell script that's using SQL though DB2.
If I have a table defined and populated
db2 "create table tb(num int,letter char(4))"
db2 "insert into tb values(111,a)
db2 "insert into tb values(112,b)
db2 "insert into tb values(111,c)
How can I check if a letter user... (0 Replies)
Discussion started by: busdude
This is the source code:
using namespace std;
struct passwd *user;
char login="alex", password="qwertyuiop";
if ((user= getpwnam(login)) == NULL)
cout << "No such user\n";
else if... (24 Replies)
Discussion started by: hakermania
8. Shell Programming and Scripting
I decided to delete the first post since it was againt the forum rules (4 Replies)
Discussion started by: Necrologist
ocfs2_hb_ctl(8) OCFS2 Manual Pages ocfs2_hb_ctl(8)
ocfs2_hb_ctl - Starts and stops the OCFS2 heartbeat on a given device.
ocfs2_hb_ctl -S -d device service
ocfs2_hb_ctl -S -u uuid service
ocfs2_hb_ctl -K -d device service
ocfs2_hb_ctl -K -u uuid service
ocfs2_hb_ctl -I -d device
ocfs2_hb_ctl -I -u uuid
ocfs2_hb_ctl -P -d device [-n io_priority]
ocfs2_hb_ctl -P -u uuid [-n io_priority]
ocfs2_hb_ctl starts and stops the heartbeat on a OCFS2 device. Users are strongly urged not to use this tool directly. It is automatically
invoked by mount.ocfs2 and other tools that require heartbeat notifications.
The tools accepts devices to be specified by its name or its uuid. Service denotes the application that is requesting the heartbeat notifi-
-S Starts the heartbeat.
-K Stops the heartbeat.
-I Prints the heartbeat reference counts for that heartbeat region.
-d Specify region by device name.
-u Specify region by device uuid.
-n Adjust IO priority for the heartbeat thread. This option calls the ionice tool to set its IO scheduling class to realtime with
scheduling class data as provided. This option is usable only with the O2CB cluster stack.
-h Displays help and exit.
mkfs.ocfs2(8) fsck.ocfs2(8) tunefs.ocfs2(8) mounted.ocfs2(8) ocfs2console(8) debugfs.ocfs2(8)
Copyright (C) 2004, 2010 Oracle. All rights reserved.
Version 1.4.3 February 2010 ocfs2_hb_ctl(8)