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
SYSTEMD-NETWORKD-WAIT-ONLINE.SERVICE(8) systemd-networkd.service SYSTEMD-NETWORKD-WAIT-ONLINE.SERVICE(8)
systemd-networkd-wait-online.service, systemd-networkd-wait-online - Wait for network to come online
systemd-networkd-wait-online is a one-shot system service that waits for the network to be configured. By default, it will wait for all
links it is aware of and which are managed by systemd-networkd.service(8) to be fully configured or failed, and for at least one link to
gain a carrier.
The following options are understood:
Network interface to wait for before deciding if the system is online. This is useful when a system has several interfaces which will
be configured, but a particular one is necessary to access some network resources. This option may be used more than once to wait for
multiple network interfaces. When used, all other interfaces are ignored.
Network interfaces to be ignored when deciding if the system is online. By default, only the loopback interface is ignored. This option
may be used more than once to ignore multiple network interfaces.
Fail the service if the network is not online by the time the timeout elapses. A timeout of 0 disables the timeout. Defaults to 120
systemd 237 SYSTEMD-NETWORKD-WAIT-ONLINE.SERVICE(8)