Solved

Bash - check for spaces

Posted on 2007-04-05
4
348 Views
Last Modified: 2013-12-26
Hello, how can i repeat an dialog until  there are no spaces in the word that is read from the dialog ?
example:

   dialog --title "EvoPanel - getmuh v1.5" \
          --inputbox "\nWrite the nickname\n" 13 50 "$jnickname"
   jnickname=`cat $tempfile`

while -nickname has spaces in it-; do something

so if i write "    blah" the while will turn on and ask me again, until i remove the spaces
0
Comment
Question by:rares_dumitrescu
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
  • 2
4 Comments
 
LVL 84

Expert Comment

by:ozo
ID: 18857027
while echo $jnickname | grep ' '
0
 

Author Comment

by:rares_dumitrescu
ID: 18857182
while [ -z $jnickname ] || [ echo $jnickname | grep ' ' ]; do
cat /dev/null > $tempfile
   dialog --title "EvoPanel - getmuh v1.5" \
          --inputbox "\nError: You cannot have a null nickname.\n\
Please try again.\n" 12 50 "$jnickname"
   jnickname=`cat $tempfile`

done

but it does not say anything .. it forks if i type: aa aa
0
 

Author Comment

by:rares_dumitrescu
ID: 18858534
i was wrong, if i type aa aa it does not work, but if i tipe <space><space>aa it works, or aa<space><space>
0
 
LVL 84

Accepted Solution

by:
ozo earned 500 total points
ID: 18861019
echo "$jnickname" | grep ' '
0

Featured Post

Industry Leaders: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Here is how to use MFC's automatic Radio Button handling in your dialog boxes and forms.  Beginner programmers usually start with a OnClick handler for each radio button and that's just not the right way to go.  MFC has a very cool system for handli…
In this post we will learn different types of Android Layout and some basics of an Android App.
This video will show you how to get GIT to work in Eclipse.   It will walk you through how to install the EGit plugin in eclipse and how to checkout an existing repository.
This is my first video review of Microsoft Bookings, I will be doing a part two with a bit more information, but wanted to get this out to you folks.

717 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question