10-27-2014
Quote:
Originally Posted by
Gmoney93079
then if name is equal to name do nothing, but if name is != name do something
We have undestood that, but: "if name is equal to name" is true regardless of the value of "name", so the condition is moot. You could have written "if 1 equals 1" for the same effect.
For any if-else-decision to make sense there must be a condition which is sometimes true, sometimes not true. If it is always true or always not true, then you do not need a condition at all. If i say to you "if the time is in the evening then go to sleep, otherwise get up" there is a condition (what the time is) and sometimes this will be "in the evening", sometimes not, resulting in "get up" sometimes and in "go to sleep" otherwise.
What you do is "if the time is any time then get up" - but you do not need to refer to the time at all in such a case, because its value would be irrelevant anyways.
I hope this helps.
bakunin
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
hello ..
I am college student and a new guy to unix.
I have a simple question:
what does "unix" stand for ,or just a meaningless name ? (4 Replies)
Discussion started by: nanuo
4 Replies
2. UNIX for Dummies Questions & Answers
14 (2 Replies)
Discussion started by: zbweh5280
2 Replies
3. UNIX for Dummies Questions & Answers
hi I am vijay
how r the unix gurus?
I want to install unix for our sites.So pls tell me abt unix installation user guide & also all the unix commands.Pls help me.I am waiting for yr reply.
bye..........vijay :D (2 Replies)
Discussion started by: vi77_surat
2 Replies
4. Programming
HI Friends,
I wanted to start this thread inorder to keep all the Unix starters to easily find useful material through this thread...I request you all to provide with the URL address of any gud material you know...
thanks and regards... (2 Replies)
Discussion started by: rahul3894singh
2 Replies
5. UNIX for Dummies Questions & Answers
Any study material for begineers for UNIX please?? (2 Replies)
Discussion started by: niranjany
2 Replies
6. UNIX for Dummies Questions & Answers
Hi, I need some help with the follow questions :(. Any help would be great!
Answer with the necessary commands
1. In your login directory, make a directory called week4/revision
2. Without changing directories, make another directory week4_revision/data
3. Change to week4_revision/data... (2 Replies)
Discussion started by: Heyo
2 Replies
7. What is on Your Mind?
Hi,
I want to prepare and then appear for Unix admin certification. Please guide me for the study material and Exams that are required to be taken for UNIX certifcation.
Thanks in advance. (11 Replies)
Discussion started by: raman1605
11 Replies
8. Programming
Hi..
I am a new joinee to this foram.I need to submit a case study in UNIX .Please help me to submit the case study by giving your valuable ideas.It will be very helpful for me.
Topic: Unix File Management
A university wants to computerize its Library operations because of... (2 Replies)
Discussion started by: viji_jeya
2 Replies
9. UNIX for Dummies Questions & Answers
Hi ,
Can anyone suggest me any UNIX Study material and UNIX Certification specific for TELECOM-DOMAIN.
Best Regards,
Om Prakash. (14 Replies)
Discussion started by: omprakash1986
14 Replies
10. SCO
Hi all,
I hope you are fine,
I'd like study Os I tried a book like Silberschatz it's a good book but like
other books it talks about the concepts abstractly and that's due to it try
to encompass many concepts from many operating systems in GENERAL.
i am not too much comfortable from these... (20 Replies)
Discussion started by: Abdo_8008
20 Replies
sleep(1) User Commands sleep(1)
NAME
sleep - suspend execution for an interval
SYNOPSIS
sleep time
DESCRIPTION
The sleep utility will suspend execution for at least the integral number of seconds specified by the time operand.
OPERANDS
The following operands are supported:
time A non-negative decimal integer specifying the number of seconds for which to suspend execution.
EXAMPLES
Example 1: Suspending command execution for a time
To execute a command after a certain amount of time:
example% (sleep 105; command)&
Example 2: Executing a command every so often
example% while true
do
command
sleep 37
done
ENVIRONMENT VARIABLES
See environ(5) for descriptions of the following environment variables that affect the execution of sleep: LANG, LC_ALL, LC_CTYPE, LC_MES-
SAGES, and NLSPATH.
EXIT STATUS
The following exit values are returned:
0 The execution was successfully suspended for at least time seconds, or a SIGALRM signal was received (see NOTES).
>0 An error has occurred.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWcsu |
+-----------------------------+-----------------------------+
|Interface Stability |Standard |
+-----------------------------+-----------------------------+
SEE ALSO
wait(1), alarm(2), sleep(3C), wait(3UCB), attributes(5), environ(5), standards(5)
NOTES
If the sleep utility receives a SIGALRM signal, one of the following actions will be taken:
o Terminate normally with a zero exit status.
o Effectively ignore the signal.
The sleep utility will take the standard action for all other signals.
SunOS 5.10 1 Feb 1995 sleep(1)