Hi All,

I need a shell script which checks if file exist or not. If file exists then send an email and if file does not exist it execute the script after sometime.

needing your help.

Regards,
Qazi

What have you done so far?

1 members found this post helpful.

And do you want a side order of fries with that?

Sorry, but please understand that LQ is not here to be an "on call" resource where you order up scripts like you would order a burger at a fast food restaurant.

Read up on the information threads about LQ and you'll learn that the intentions are to "help" but really to help you learn to accomplish these things yourself.

I'm rather surprised that you haven't taken the time to read up on LQ much in the past 3 years since you signed up for an account. At least one of your posted threads a few weeks ago shows you having used a shell script and asked some questions about it.

Therefore you can use some of the links in my signature to read up on BASH shell scripting, there are a variety of guides offered. There's also a link to the LQ guide on how to ask effective questions.

Notes also that checking whether or not a file exists is a very simple BASH script action and performing a simple web search can at least guide you in that part of your script.

If/When you have a first attempted script, why not post it in this thread and people can help you progress further with it. Remember to use [code][/code] tags to enclose any code or scripts you post.

1 members found this post helpful.

Read the bash manpage.

to be exact.

Go and sin no more.

I created a shell script named test.sh
Can I define time interval to execute same script after sometime. For example after 5 minutes
I am talking about line 6 to execute script test.sh again after some time.

#!/bin/bash
FILE=$1

if [ -f $FILE ];
then
echo "File $FILE exists"
else
test.sh new.txt
fi


Regards,
Qazi

Before we get into to that, I have to ask if you have even tried to execute this program?

Because if you have, you would have noticed that it does not do what you want it to.

Testrun without argument(s):
Testrun with argument:
Please read what rtmistler posted, and read more here.

Best regards,
HMW

I got a solution by using "at" command in my script.




#!/bin/bash
FILE=$1

if [ -f $FILE ];
then
echo "File $FILE exists"
else
at 23:40 <<< 'test.sh new.txt'
fi



***************
If script cannot find the file new.txt at first run then it execute the script again at time defined by "at" command.

Thanks all who helped me.

Regards,
Qazi

Good start. Please use [code][/code] tags to enclose your code. There's a link in my signature which describes how to do that.

People will help you to refine the script, so give some more details on the next step of results you wish to attain.

Note as HMW is pointing out that you are ignoring the case where there is not an argument. The variable $# gives you the number of arguments passed, so you can test that to make sure it's exactly 1.

What do you next want to do with this script?

Do you want to execute some action every 5 minutes? There's a "sleep" command which will wait the specified time you give to it.

Run it at a certain time of day, have a delay and then send the email? You can schedule the script to run with a cron job so that it will run at a given time of day.

1 members found this post helpful.

And for the email part:

How can i send an email through UNIX mailx command