9 More Discussions You Might Find Interesting
1. UNIX for Beginners Questions & Answers
I do not know the use of the -o -v -R operators.
This is what the info says and I am confused of what optname and varname
mean, are they just normal variable?
-o optname
True if the shell option optname is enabled. See the list of
options under the ... (6 Replies)
Discussion started by: kristinu
6 Replies
2. Programming
Hey everyone, I'm really getting into learning C, but as I look at more advanced example code, I see things like
if (!*variable1)
blah blah blah...
and
variable2 ^= *(variable1++);
my question is, when you have a combination of two operators, like !*. The ! means 'not' and the *... (2 Replies)
Discussion started by: Lost in Cyberia
2 Replies
3. Shell Programming and Scripting
Hi all,
I have a variable which is having the value like below,
$ echo ${p}
8 15 22 30
$
My requirement is that the variable should return true when it contains only one number like below,
$ echo ${p}
15
$
Otherwise, it should return false if it contains more than one number.
I... (4 Replies)
Discussion started by: raghu.iv85
4 Replies
4. Shell Programming and Scripting
Hi
Lets say I have two arrays:
VAR_1 = "File_A" "File_B" "File_C" "File_D"
VAR_2 = "File_A" "File_D"
Is there a simple command to get the difference of these list, i.e.
VAR_1_2 = "File_B" "File_C"
or do I have to write a script and loop through all elements and compare them one by one?
... (1 Reply)
Discussion started by: Wernfried
1 Replies
5. Shell Programming and Scripting
Apologies for the utter triviality of this question, but we all have to start somewhere! I've also tried searching but this question is pretty vague so I didn't (a) really know what to search for or (b) get many relevant hits to what I did search for.
Anyway, I'm in the process of self-teaching... (1 Reply)
Discussion started by: u5j84
1 Replies
6. Homework & Coursework Questions
I really don't know the meaning of these operators. Could someone explain the meanings?
<, <=, ==, !=, >=, >,
||, &&, ! ~ , !~
Thanks! (1 Reply)
Discussion started by: Erjen
1 Replies
7. Shell Programming and Scripting
I really don't know the meaning of these operators. Could someone explain the meanings so I can make my test for today?
<, <=, ==, !=, >=, >,
||, &&, ! ~ , !~
Thanks! (1 Reply)
Discussion started by: Erjen
1 Replies
8. UNIX for Dummies Questions & Answers
I am trying to understand
Does the following:
{tmp+=$10}
Mean take $10 and add them all up and call it tmp
thanks! (2 Replies)
Discussion started by: llsmr777
2 Replies
9. UNIX for Advanced & Expert Users
can anybody write a program to divide a number by another number using bitwise operators (9 Replies)
Discussion started by: areef4u
9 Replies