Visit Our UNIX and Linux User Community


while loop


 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting while loop
# 1  
Old 08-19-2009
while loop

Code:
I have scnerio like this ,the below files comming from remote server 
It has to do infinete loop till all files arrives i.e.
if first file "file1.txt" arrives then copy  files1 related  to another location  
and sleep for 5 mins and then check for
if  2nd file comes "file2.txt" then then copy files2 related to another location 
and sleep for 5 mins and then check for
if 3rd file comes "file3.txt" then then copy files3 related to another location.Please any idea using while loop.


file1.txt
file2.txt
file3.txt

Thanks in advance
Akil
# 2  
Old 08-19-2009
Use a counter, set it at 0, then in your while loop, just increment when any of your if condition is true, and exit the loop when counter = 3
# 3  
Old 08-19-2009
Hi ,
Thanks for your replay.I need to check for this file first whichever file comes at that path and then check for another file so and so.....
Code:
file1.txt
file2.xt
file3.txt

ex:If file2.ext was present in path then copy file2_* files to another location 
then check for another file if exist then copy those files.Any idea
.I have come up with this sample code ,I am not sure how to do looping till 3 files available.

count=0
while [$count -eq 3 ]
do
copy files which are realted to file1_*
count=`expr $count+1`
done

# 4  
Old 08-19-2009
Well, what isnt clear to me in your logic is:
1) Do/can the files arrive separately?
2)Do they arrive in the correct sequence?

1) means testing if any of the three files are present, may have an impact on counter logic ( e.g. file2 and file3 found at the same time...)

2) means you can use the counter value as filenumber in your condition (IF)

Dont forget the sleep before the "done" line

---------- Post updated at 18:07 ---------- Previous update was at 18:04 ----------

Not sure I understood you second post...

3 files 1,2,3
OK file2 found and copied
then?
check for another file -> which one?
# 5  
Old 08-19-2009
Hi ,
Sorry for not explained properely

3 indicator files are comming from 3 different remote server ,they will come at any time once those related files from reomte server push to my local server( .If any indicator file receive first copy those related files and check for every 5 mins for other indicator files to receive)

ex:
Code:
     Indicator files

     file1.txt 
     file2.txt
     file3.txt

Related files
file1_a.txt
file1_b.txt

file2_a.txt
file2_b.txt

file3_a.txt
file3_b.txt


Last edited by vbe; 08-20-2009 at 07:05 AM.. Reason: presentation
# 6  
Old 08-20-2009
What makes it a bit tricky is the fact that you copy the file without removeing them ( they are still there at next test...) is that so?

Previous Thread | Next Thread
Test Your Knowledge in Computers #893
Difficulty: Easy
sed uses regular expressions, such as .* (zero or more of any character).
True or False?

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

For loop or while loop from a text file

Hi all, i developed a script to measure the uptime of a process in a Solaris 10/11 environments. All is well, but i came across a situation where there are multiple processes of the same name. Basically i have the following result file: beVWARS 13357 19592122 beVWARS 14329 19591910... (4 Replies)
Discussion started by: nms
4 Replies

2. Shell Programming and Scripting

awk loop using array:wish to store array values from loop for use outside loop

Here's my code: awk -F '' 'NR==FNR { if (/time/ && $5>10) A=$2" "$3":"$4":"($5-01) else if (/time/ && $5<01) A=$2" "$3":"$4-01":"(59-$5) else if (/time/ && $5<=10) A=$2" "$3":"$4":0"($5-01) else if (/close/) { B=0 n1=n2; ... (2 Replies)
Discussion started by: klane
2 Replies

3. Shell Programming and Scripting

Reset while loop to loop same file multiple times

Hi, I want to read file multiple times. Right now i am using while loop but that is not working. ex. While read line do while read line2 do echo stmt1 #processing some data based on data., done < file2.txt done < file1.txt # This will have 10... (4 Replies)
Discussion started by: tmalik79
4 Replies

4. Shell Programming and Scripting

Array Variable being Assigned Values in Loop, But Gone when Loop Completes???

Hello All, Maybe I'm Missing something here but I have NOOO idea what the heck is going on with this....? I have a Variable that contains a PATTERN of what I'm considering "Illegal Characters". So what I'm doing is looping through a string containing some of these "Illegal Characters". Now... (5 Replies)
Discussion started by: mrm5102
5 Replies

5. Shell Programming and Scripting

My for loop decides to become an infinite loop?

Hi, I was debating if I should put this in the dummies or scripts section, I apologize in advance if I chose poorly. Fairly new to Unix and BASH scripting but I thought I made it fairly well given my limited understanding. However, the output indicates that it's looping and I'm ending up with a... (5 Replies)
Discussion started by: gotreef
5 Replies

6. Shell Programming and Scripting

S# in a for loop - concatenate $(loop counter)

Hi, hope I am posting in the right section. My problem is that I have 2 or more arguments passed and I want to check if the arguments passed exists or not. The first argument should not exist and the remaining others should exist. example: ./shells.sh argument1 argument2 argument3 ... (5 Replies)
Discussion started by: fight4love
5 Replies

7. 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

8. Shell Programming and Scripting

Null Handling in Until loop. . .loop won't stop

Hi Im running this script, which is supposed to find the max value build some tables and then stop running once all the tables are built. Thing is , it keeps assigning a null value to $h and then $g is null so it keep building tables i.e. testupdateNUL. How can I stop this? Here is what I have: ... (4 Replies)
Discussion started by: brandono66
4 Replies

9. Shell Programming and Scripting

Using variables created sequentially in a loop while still inside of the loop [bash]

I'm trying to understand if it's possible to create a set of variables that are numbered based on another variable (using eval) in a loop, and then call on it before the loop ends. As an example I've written a script called question (The fist command is to show what is the contents of the... (2 Replies)
Discussion started by: DeCoTwc
2 Replies

10. Shell Programming and Scripting

Is there a better way I could have run this loop. (For loop with two variables)

Sorry for such a dreadful title, but I'm not sure how to be more descriptive. I'm hoping some of the more gurutastic out there can take a look at a solution I came up with to a problem, and advice if there are better ways to have gone about it. To make a long story short around 20K pieces of... (2 Replies)
Discussion started by: DeCoTwc
2 Replies

Featured Tech Videos