Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: Noob question: How to check the total number of inputs entered by user?
Top Forums UNIX for Beginners Questions & Answers Noob question: How to check the total number of inputs entered by user? Post 303042045 by jejemonx on Thursday 12th of December 2019 04:34:33 AM
Old 12-12-2019
I'm using the
Code:
read

command to read 3 inputs, namely num1, num2, and num3. I want to write a while loop that repeatedly asks for the correct number of inputs, which is 3.

Here's the pseudocode:
read user input here (must be 3)
while the number of inputs entered is less than or greater than 3, ask again for input.
Once it exits the while loop, do the rest of the script's purpose.
Last edited by rbatte1; 12-12-2019 at 10:10 AM..
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Bash : how do i check the user input and make sure is only chracter or only number ?

Bash : how do i check the user input and make sure is only character or only number ? (7 Replies)
Discussion started by: CheeSen
7 Replies

2. Shell Programming and Scripting

validating user entered date

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)
Discussion started by: KiranKumarKarre
1 Replies

3. High Performance Computing

PBS - restrict total number of processors per user

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)
Discussion started by: gnuplot
0 Replies

4. Shell Programming and Scripting

Total noob script

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)
Discussion started by: MatsO
4 Replies

5. Shell Programming and Scripting

only a number can be entered no letters?

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)
Discussion started by: gangsta
5 Replies

6. Shell Programming and Scripting

Help with sum total number of record and total number of record problem asking

Input file SFSQW 5192.56 HNRNPK 611.486 QEQW 1202.15 ASDR 568.627 QWET 6382.11 SFSQW 4386.3 HNRNPK 100 SFSQW 500 Desired output file SFSQW 10078.86 3 QWET 6382.11 1 QEQW 1202.15 1 HNRNPK 711.49 2 ASDR 568.63 1 The way I tried: (2 Replies)
Discussion started by: patrick87
2 Replies

7. Shell Programming and Scripting

How to accept command line argument as character or text if number is entered?

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)
Discussion started by: aadityapatel198
6 Replies

8. Shell Programming and Scripting

Print Unknown Number of User Inputs in awk

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)
Discussion started by: tattoostreet
3 Replies

9. Shell Programming and Scripting

How to check user entered correct file format or not?

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)
Discussion started by: nalu
6 Replies

10. Shell Programming and Scripting

Total Noob BASH scripting question

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 MOJAVE

vm_stat

VM_STAT(1)						    BSD General Commands Manual 						VM_STAT(1)

NAME

     vm_stat -- show Mach virtual memory statistics

SYNOPSIS

     vm_stat [[-c count] interval]

DESCRIPTION

     vm_stat displays Mach virtual memory statistics.  If the optional interval is specified, then vm_stat will display the statistics every
     interval seconds.	In this case, each line of output displays the change in each statistic (an interval count of 1 displays the values per
     second).  However, the first line of output following each banner displays the system-wide totals for each statistic.  If a count is pro-
     vided, the command will terminate after count intervals.  The following values are displayed:

     Pages free
	     the total number of free pages in the system.

     Pages active
	     the total number of pages currently in use and pageable.

     Pages inactive
	     the total number of pages on the inactive list.

     Pages speculative
	     the total number of pages on the speculative list.

     Pages throttled
	     the total number of pages on the throttled list (not wired but not pageable).

     Pages wired down
	     the total number of pages wired down.  That is, pages that cannot be paged out.

     Pages purgeable
	     the total number of purgeable pages.

     Translation faults
	     the number of times the "vm_fault" routine has been called.

     Pages copy-on-write
	     the number of faults that caused a page to be copied (generally caused by copy-on-write faults).

     Pages zero filled
	     the total number of pages that have been zero-filled on demand.

     Pages reactivated
	     the total number of pages that have been moved from the inactive list to the active list (reactivated).

     Pages purged
	     the total number of pages that have been purged.

     File-backed pages
	     the total number of pages that are file-backed (non-swap)

     Anonymous pages
	     the total number of pages that are anonymous

     Uncompressed pages
	     the total number of pages (uncompressed) held within the compressor

     Pages used by VM compressor:
	     the number of pages used to store compressed VM pages.

     Pages decompressed
	     the total number of pages that have been decompressed by the VM compressor.

     Pages compressed
	     the total number of pages that have been compressed by the VM compressor.

     Pageins
	     the total number of requests for pages from a pager (such as the inode pager).

     Pageouts
	     the total number of pages that have been paged out.

     Swapins
	     the total number of compressed pages that have been swapped out to disk.

     Swapouts
	     the total number of compressed pages that have been swapped back in from disk.

     If interval is not specified, then vm_stat displays all accumulated statistics along with the page size.

Mac OS X							  August 13, 1997							  Mac OS X
All times are GMT -4. The time now is 06:26 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy