Sponsored Content
Full Discussion: while loop question
Top Forums Shell Programming and Scripting while loop question Post 302119872 by stepnkev on Friday 1st of June 2007 09:37:49 AM
Old 06-01-2007
while loop question

while [ $dev_num ]
do
print What is the next device number to be added to $dgroup?
print Press \<Enter\> if there are no more devices to be added.
read dev_num
export dev_num
symld -g $dgroup -sid $sname add dev $dev_num
done

In this while loop, how do I stop it from running the final command if <Enter> is pressed? Currently, if a user presses <enter> it will still run
symld -g $dgroup -sid $sname add dev
I'm not sure how to skip this command if a user just presses <Enter>

Thanks

Edit: Forgot to mention this is the ksh
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Loop question

hi, how would i go about making a loop which gets each line from a single text file, set it to a variable and then print it to screen? thanks eg: #!/bin/sh FILE="somefile.txt" text_line="" what kind of loop would use here? (18 Replies)
Discussion started by: strike
18 Replies

2. Shell Programming and Scripting

loop question

HI ALL How to read first 10 line from a file using any method (5 Replies)
Discussion started by: aliahsan81
5 Replies

3. Shell Programming and Scripting

BASH loop inside a loop question

Hi all Sorry for the basic question, but i am writing a shell script to get around a slightly flaky binary that ships with one of our servers. This particular utility randomly generates the correct information and could work first time or may work on the 12th or 100th attempt etc !.... (4 Replies)
Discussion started by: rethink
4 Replies

4. Shell Programming and Scripting

For Loop Question

I'm improving the way an existing script handles arrays, but the results aren't what I had in mind: e="Too many consecutive errors... System is probably unstable!" e="Cancelable Timer Wait Failed!" for errcd in ${e} do echo ${errcd} done The for loop interprets the spaces... (2 Replies)
Discussion started by: ironhalo
2 Replies

5. Shell Programming and Scripting

For Loop Question

I am struggling with the for loop. I have a file name heros.txt and I would like to go through a list in file where.txt and see if I can find the name from where inside heros. One of the problems that I am having is I dont understand how to setup the for loop to find the list to search.:wall: ... (6 Replies)
Discussion started by: captaindoogles
6 Replies

6. Shell Programming and Scripting

For loop question

Hi, I'm trying to put together a small script that will read a txt file that contains a list of two columns. Each column is the name of a folder.. e.g. AIX Server1 AIX Server2 AIX Server3 $ for i in `cat /opt/apacheprod/scripts/input/copy_list.txt` do PLATFORMVAR=`awk ' { print $1 } '... (7 Replies)
Discussion started by: Jazmania
7 Replies

7. Shell Programming and Scripting

For loop question

I have two files. In file one, there are many columns, but only two of interest to me. Column 1 contains a list of individuals, defined by an ID number. Column 10 contains the diagnosis that each individual has (I am a physician). All together, there are 3000 lines in this file, one line per... (2 Replies)
Discussion started by: awc228
2 Replies

8. Shell Programming and Scripting

While loop Question

Hi, I have a requirement where I have to check for 10 files in Unix location. If all of the files present in that directory then i have execute another process. can you help me resolving this issue. sample location /home/usr abc.txt cde.txt aaaa.txt lll.txt ooo.txt if all the... (3 Replies)
Discussion started by: manasvi24
3 Replies

9. UNIX for Dummies Questions & Answers

Loop question

Hi, I would really appreciate some help with manipulating a file. Here is my input file: SNP_1 : 1 SNP_11 : 1 SNP_2 -0.12 1 SNP_12 -0.3472 1 SNP_3 -0.708 1 SNP_13 0.5037 1 SNP_4 1.492 0.5 SNP_14 -0.0685 1 SNP_5 1.27 0.5 SNP_15 0.547 ... (3 Replies)
Discussion started by: zajtat
3 Replies

10. UNIX for Dummies Questions & Answers

Question about for loop

Hi, I have code like below disk_list=$(ls /root/file1) for disk in $disk_list do pvcreate $i done I know what pvcreate command does, but I do not understand what this $i do here. can someone please explain. (2 Replies)
Discussion started by: stew
2 Replies
VM(1)								      mgetty								     VM(1)

NAME
vm - VoiceModem is the program for handling the voice modem functionality from shell scripts ACTIONS
beep options [<frequency [<length in 0.001sec>]]> diagnostics options device name (e.g. ttyS2 dial options phone number help play options [<file names]+> record options file name shell options [<shell script [shell options]]> wait options [<time in seconds]> devicetest OPTIONS
-c n use compression type n -d n set i/o device -t, -m, -i, -e, -s, -H equals to -d <2,3,4,5,6,7> -l s set device string (e.g. -l ttyS2:ttyC0) -v verbose output -w use off / on hook signal from local handset to start and stop recording -x n set debug level -L n set maximum recording length in sec -P print first DTMF tone on stdout and exit -R read and print DTMF string on stdout and exit -S s set default shell for shell scripts (e.g. -S /bin/sh) -T n set silence timeout in 0.1sec -V n set silence threshold to <n> (0-100%%) SEE ALSO
vgetty(1) POD ERRORS
Hey! The above document had some coding errors, which are explained below: Around line 30: You forgot a '=back' before '=head1' Around line 32: '=item' outside of any '=over' Around line 71: You forgot a '=back' before '=head1' perl v5.10.1 2010-04-04 VM(1)
All times are GMT -4. The time now is 09:46 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy