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Full Discussion: Simple script
Top Forums Shell Programming and Scripting Simple script Post 302937239 by ramky79 on Wednesday 4th of March 2015 10:22:14 AM
Old 03-04-2015
Simple script
I have to pull files from a customers cloud directory to our cloud directory periodically, the customer has the files in the new-version(nver) folder; which I am pulling via a python script. (python nver.py)

customers cloud location:
Code:
s3://custbucket/$nver/files

Our cloud location:
Code:
s3://mybucket/$fname/$cver/files

Now every time the customer comes up with a newer version my cron script should be able to check the version on our cloud folder, compare it to the latest version at customers end and pull the files if the customer version is different.

The below is the script that i have come up with, but confused how to handle the logic at cver
Code:
#!/bin/bash

nver=`python nver.py`
cver=
fname=cust-`date +%Y%m%d`

if [[ $nver -ne $cver ]]; then
  aws s3 cp s3://custbucket/$nver/* s3://mybucket/$fname/$cver/
  if [[ $? -eq 0 ]]; then
    mail -s "successfully copied latest cust files version $nver" myname@me.com
  else
    mail -s "Issues copying latest cust files version $nver" myname@me.com
  fi
fi

cver=$nver

I could have defined cver as
Code:
cver=`aws s3 ls s3://mybucket/$fname/ | tail -1 | awk '{print $2}'`

...but, I do not have a ls -l option in aws, and this logic is not working sometimes, as tail -1 is not always giving the $cver string

My question?
If I'm declaring cver=$nver, the next time I run the script wouldn't it give the same $nver??, in which case it is never entering the loop and copying files
Last edited by rbatte1; 03-05-2015 at 12:10 PM.. Reason: Spelling, capital letters and converting HTML tags to CODE tags (oh and adding ICODE tags too)
 

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LEARN ABOUT DEBIAN

python-coverage

PYTHON-COVERAGE(1)					      General Commands Manual						PYTHON-COVERAGE(1)

NAME

       python-coverage - measure code coverage of Python program execution

SYNOPSIS

       python-coverage -x module.py [ARG...]
       python-coverage -e
       python-coverage -r [-m]
       python-coverage -a [file...]

DESCRIPTION

       python-coverage	executes  a Python program and measures which of its statements are executed and which are not.  It stores the information
       in the file .coverage in the current working directory.

OPTIONS

       -e     Erase the .coverage file.

       -x     Execute a Python module, giving it the remaining command line arguments.

       -r     Produce a coverage report.

       -m     With -r, show the line numbers that were missed by the execution.

       -a     Annotate source files.  For each source file foo, produce foo,cover, with executed lines prefixed by ">" and non-executed by "!".

       --help Produce a help summary.  It might be more helpful than this manual page.

AUTHOR

       The python-coverage command is a one-line Python script which calls the coverage.py Python module to do all the work.  The module was rigi-
       nally developed by Gareth Rees, and is now developed by Ned Batchelder.	The module's home page is
       http://www.nedbatchelder.com/code/modules/coverage.html.

       This manual page was cobbled together by Lars Wirzenius for Debian, by copy-pasting from the help texts from the module.

																PYTHON-COVERAGE(1)
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