Hi jejemonx...
This is what vbe was referring to assuming you are using 'bash':
AND, an example of how it works:
As you can see whether you input variables 'b' and 'c' or not they have 'NULL' values so there will always be 3 variables.
You could always use 3 separate 'read's and check each one for validity and restart the loop as required if one or more is not a number...
I need the date validation. I searched in the google but i didn't find my requirements.
requirements:
1) user has to enter the date in YYYY/MM/DD format
2) MM validations
3) DD validations.
and if the month is april it should allow 30 days only and for May month it should allow 31 days like... (1 Reply)
Hello everyone!
I am a bit inexperienced with administering queueing programs. I installed Torque (a PBS derivative) on a Linux cluster and it is running well. There is one annoying problem though: users can run massively parallel jobs and serial jobs too. Almost all users do a mix of the two. I... (0 Replies)
Hi i am a total noob at shell scripting. i was wondering if somebody could help me with my script.
i want the script to search the dev folder for the burner file
because they are different between distrubutions? as i under stand it.
this i the script.
#!/bin/bash
echo "Script för att bränna 360... (4 Replies)
ok the user can only enter a number if a letter is entered it shouldnt be accepted
This is what i have so far
read -p "How many cars to enter:" cars
until
do
read -p "Invalid number. Please re-enter:" $tags
done (5 Replies)
Hello
Does the unix korn shell provide a function to convert number entered in command line argument to text or Character so that in next step i will convert Chr to Hex (6 Replies)
Hello,
I am new to awk and I am trying to figure out how to print an output based on user input.
For example:
ubuntu:~/scripts$ steps="step1, step2, step3"
ubuntu:~/scripts$ echo $steps
step1, step2, step3
I am playing around and I got this pattern that I want:
... (3 Replies)
Hi Experts,
path=/db/files/
format=$1
User can enter any file format.compare the user file format with actual file format existed in the directory /db/files. User enter all characters as "A" apart from date format.
example1: user will be entering the file format AAA_AA_YYYYMMDD.AAA
Actual... (6 Replies)
Hello All,
I have a file of ip addresses called activeips.txt
What I'm trying to do is run a simple bash script that has a loop in it. The loop is a cat of the IP addresses in the file.
The goal is to run 2 nmap commands to give me outputs where each address in the list has an OS... (11 Replies)
Discussion started by: Dirk_Pitt
11 Replies
LEARN ABOUT OSF1
line
line(1) General Commands Manual line(1)NAME
line - Reads one line from standard input
SYNOPSIS
line
STANDARDS
Interfaces documented on this reference page conform to industry standards as follows:
line: XCU5.0
Refer to the standards(5) reference page for more information about industry standards and associated tags.
OPTIONS
None
DESCRIPTION
The line command copies one line, up to and including a newline, from standard input and writes it to standard output. Use this command
within a shell command file to read from your terminal. The line command always writes at least a newline character.
NOTES
The line utility has no internationalization features and is marked LEGACY in XCU Issue 5. Use the read utility instead.
EXIT STATUS
Success. End-of-File.
EXAMPLES
To read a line from the keyboard and append it to a file, enter: echo 'Enter comments for the log:' echo ': c' line >>log
This shell procedure displays the message: Enter comments for the log:
It then reads a line of text from the keyboard and adds it to the end of the file log. The echo ': c' command displays a : (colon)
prompt. See the echo command for information about the c escape sequence.
SEE ALSO
Commands: echo(1), ksh(1), read(1), Bourne shell sh(1b), POSIX shell sh(1p)
Functions: read(2)
Standards: standards(5)line(1)