10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hello,
I am trying to develop a script to check for valid hostnames. Below are the prerequisites for a valid hostname which I got from wiki :
Hostnames are composed of series of labels concatenated with dots, as are all domain names. For example, "en.wikipedia.org" is a hostname. Each label... (8 Replies)
Discussion started by: rahul2662
8 Replies
2. Shell Programming and Scripting
How can I validate if time (HH:MM:SS) argument is valid? I got this from web but I can't modify it to exit the script if the time argument is invalid.
echo $1 | awk -F ':' '{ print ($1 <= 23 && $2 <= 59 && $3 <= 59) ? "good" : "bad" }'
ex:
./script.ksh 12:34:21 = okay
./script.ksh... (10 Replies)
Discussion started by: erin00
10 Replies
3. Shell Programming and Scripting
Hello there, find below for my code first:
$pdp_asaba=`cat /tmp/temp_total | grep asaba | sed 's/*//g'`
if ]]
then pdp_asaba=0
fi
$pdp_abuja=`cat /tmp/temp_total | grep abuja | sed 's/*//g'`
if ]]
then pdp_abuja=0
fi
$pdp_ojota=`cat /tmp/temp_total | grep ojota | sed 's/*//g'`
if ... (3 Replies)
Discussion started by: infinitydon
3 Replies
4. Shell Programming and Scripting
How to check the user input to be valid using shell script?
The valid input is in the format like as follows.
1. It can only have r,w,x or a hyphen and nothing else.
2. ensure the r, w, x are in the correct order.
for example: rwxr-xr-x is a valid format.
Thanks (5 Replies)
Discussion started by: hyeewang
5 Replies
5. UNIX for Dummies Questions & Answers
Hi All,
I am a newbie...I would like to have a function which ll check if a file contains valid strings before "=" operator. Just to give you my requirement:
assume my file has content:
hello= gsdgsd sfdsg sgdsg sgdgdg
world= gggg hhhh iiiii
xxxx= pppp ppppp pppp
my... (5 Replies)
Discussion started by: rtagarra
5 Replies
6. Shell Programming and Scripting
I need to check if an account has a valid password.
Would something like this work?
read ACCNAME
if grep -q "^$ACCNAME:\$6:" /etc/shadow; thenI noticed every entry in my shadow file that has a password starts with $6 ... it works for my current setup, but would it always work? I can't test... (4 Replies)
Discussion started by: ADay2Long
4 Replies
7. Shell Programming and Scripting
Hi everyone,
I cant seem to figure this out for the life of me. Basically, I have two arrays..
sub init {
use Getopt::Long;
use Data::Dumper;
my @selections = ();
my @valid_options = ( "vaild1", "valid2" );
GetOptions( "input=s" =>... (2 Replies)
Discussion started by: ckozler
2 Replies
8. Shell Programming and Scripting
Hello all
I am having problems with a part of my script. Basically it asks for the user to enter a new id number for them. The catches are:-
* It cannot already be existing (it will check a file)
* It has to be four characters
* It can only be numbers
* It cannot call back into the... (2 Replies)
Discussion started by: ChrisHoogie
2 Replies
9. Shell Programming and Scripting
Hi
how to check input is "empty" and "numeric" in ksh?
e.g:
./myscript.ksh k
output show: invalid number input
./myscript.ksh
output show: no input
./myscript.ksh 10
output show: input is numeric (6 Replies)
Discussion started by: geoffry
6 Replies
10. Shell Programming and Scripting
Hi All,
Is there any code in Perl which can differentiate between numeric and non-numeric input? (11 Replies)
Discussion started by: Raynon
11 Replies
How to check for a valid numeric input
