Visit Our UNIX and Linux User Community


Repeat a command in a shell


 
Thread Tools Search this Thread
Top Forums UNIX for Dummies Questions & Answers Repeat a command in a shell
# 1  
Old 10-29-2002
Repeat a command in a shell

Hi there,

i would like to repeat a command in a shell sript (bash)

the script starts with a menu to choose a menu point to do something ....

on the end of the script i would like to restart the programm to choose the menu points on the beginning.

I would also make a sript that send every 3-4 minutes a simple command (e.g. df -k ore date ....) to avert a disconnet.

pls help.

thanks!
# 2  
Old 10-29-2002
If you have used a SSH to run your script then you don't have to worry about being disconneted unlike and ftp shell.

As far as Menu's go you should look at the 'Select' shell command work. This is in the Ksh on all unix platforms but does appear in other shells depending on which platform you use.
# 3  
Old 10-30-2002
for the menu to keep popping up after you choose a menu item and it executes you can do the following :-
Just after your comments in the beginning of your scripts ( I'm presuming that you are using a case statement to write your menu)
eg.
Code:
while true
do
clear

# The following is displayed as a menu on the user's screen

echo "                    Administrator's Menu
                          ====================
                1)  View backup status
     Enter your Choice ==> \c"

read CHOICE DUMMY

# This section executes the user's choice of commands from the above menu

case "$CHOICE" in

# This command shows the last ten lines of the backup log to allow
# the Administrator to view the status of the backups over the last
# few days

        1 )  tail -10 /usr/scripts/backup.log |pg
            ;;
esac
done

In other words the while true do....done will do it for you

added code tags --oombera

Last edited by oombera; 02-17-2004 at 02:54 PM..
 

Previous Thread | Next Thread
Test Your Knowledge in Computers #396
Difficulty: Medium
HP-UX was the first Unix to offer access control lists for file access permissions as an alternative to the standard Unix permissions system.
True or False?

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

How to Repeat history command?

Assume i have typed 4 commands in the past like vi `ls -t |head -n 1` tail -2 test.txt ls -lrt | grep "/etc/profile.d" pwd Now if i type r p it should execute the command "pwd" likewise r t should execute tail -2 test.txt. Note: esc k and using up arrow and down arrow will get this work... (3 Replies)
Discussion started by: Ramanareddygv
3 Replies

2. Programming

Java: Repeat a command

I came across a site to learn java and they give you practice problems to do. I was wondering if anyone can help me with this since I am totally new to Java. Here is the first problem: Write a program that will read in a name from the command line and write it out 100 times. Thank you for any... (10 Replies)
Discussion started by: totoro125
10 Replies

3. Shell Programming and Scripting

Repeat a command for one sec

How to repeat the execution of a simple command like the following for 1 sec ? echo Hi The completion time for the command is not known, but we need to calculate the number of times this commans executes successfully within 1 sec. Thanks Kumarjit (5 Replies)
Discussion started by: kumarjt
5 Replies

4. Shell Programming and Scripting

Repeat command with new variable for each line in txt file

Well here is my question. Let's say I have this Script: find /var/mobile/ maxdepth -2 name "$x" >> /"$x".txt The thing is I want to repeat this script and pull out a variable from a text file like this (each line = new variable $x and another run of the whole command) Thanks for... (27 Replies)
Discussion started by: pasc
27 Replies

5. Shell Programming and Scripting

Repeat a command on linux without typing

Hi, I would like to run the clear command, for every 10 times I hit the enter button. Is there a way to track the number of times the enter button is hit and run the clear command? Thanks (2 Replies)
Discussion started by: jacobs.smith
2 Replies

6. UNIX for Advanced & Expert Users

Repeat output of last command w/o repeating last command

Is there a way to repeat the output of the last command for filtering without running the command again? All I could think of was to copy all the data to a text file and process it that way, is there another way? Like say I want to grep server.server.lan from a dtrace that was pages long after I... (5 Replies)
Discussion started by: glev2005
5 Replies

7. Shell Programming and Scripting

Repeat function in shell script

Hi all, I want to use the wget command to download a file from a webpage and if just in case the file is empty the script should repeat the wget command. something like this wget -q -O - http://www.someurl.something > /tmp/file if ] ; then echo "$FILE has data." (Continue rest of the... (3 Replies)
Discussion started by: stinkefisch
3 Replies

8. Shell Programming and Scripting

Repeat same command on multiple lines

HI I have a text file named docs with 100 filenames with full directory path one by one. I want to perform an action on all of them, the action i want to do this chown bin:bin <filename>. The <filename> should be each line in the docs text file. Please give the code. Somebody told to use for... (2 Replies)
Discussion started by: PrasannaKS
2 Replies

9. UNIX for Dummies Questions & Answers

Repeat previous unix command

Hi all, Is there a way to bring back the previous unix command without retyping? I tried the "arror up" key, and it seems not working (sun solaris). What is the correct way? Thanks! (4 Replies)
Discussion started by: syang68
4 Replies

10. Shell Programming and Scripting

Repeat last entered command ?

Hi, how to do that ? I mean only print it but not execute. I'm using putty to interact with ksh. (in windows cmd up arrow does the job) thanks vilius (5 Replies)
Discussion started by: vilius
5 Replies

Featured Tech Videos