I need a crontab script

[bschultz]

I need a cron script (either php or shell) that will:

- delete all mp3's in a given directory
- use wget to download the "new" mp3's
- if wget failed (404 or any other reason) email (using sendmail) an error report
- if wget downloaded the files successfully, chmod a remote directory (the remote server is a Mac, so the permissions change at will!), then scp them to the remote server (Mac, so wget doesn't work so well...or I'd run the script on that server)
- if the scp didn't work (permissions, internet connection or any other reason) sendmail an error report

I have everything working except the emailing of the error report....and the chmod.


Here's what I have:

#!/bin/sh
set -e

cp /backup.mp3 /var/www/showdownloads/XXX/backup.mp3
cd /var/www/showdownloads/XXX
rm *.mp3
wget -nd -r -l1 --no-parent -A.mp3 ftp://XXX:XXXX@XXX.XXX.XXX.XXX/directory/
scp *.mp3 downloads@192.168.2.169:"/Volumes/XXX"
exit

Any ideas?

Thanks!

[bschultz]

I've finally had some time to work on this again.

I've decided to add error checking (based on exit codes) and email from the code I already have working.

Here's the problem I've run into:

I tried to add the error checking after the scp command (while including a non-working IP addres - - - trying to make it fail). The exit code of the scp command is returning 0 (success) on a "lost connection" attempt.

Here's my code:

#!/bin/bash
#set -o errexit -o nounset -o xtrace

cd /var/www/weather/

if [ $? -ne 0 ] ; then
SUBJECT="Weather Currents Download Problem Encountered"
# Email To ?
EMAIL="me@me.com"
# Email text/message
EMAILMESSAGE="There was a problem downloading the currents for the weather.  Please check the server."
echo "This is an email message test"> $EMAILMESSAGE
echo "This is email text" >>$EMAILMESSAGE
# send an email using /bin/mail
/usr/sbin/sendmail -s "$SUBJECT" "$EMAIL" < $EMAILMESSAGE
exit 1
fi



wget --no-passive-ftp 'ftp://user:password@remote_ip_address/Current.mp3'

if [ $? -ne 0 ] ; then
SUBJECT="Weather Currents Download Problem Encountered"
# Email To ?
EMAIL="me@me.com"
# Email text/message
EMAILMESSAGE="There was a problem downloading the currents for the weather.  Please check the server."
echo "This is an email message test"> $EMAILMESSAGE
echo "This is email text" >>$EMAILMESSAGE
# send an email using /bin/mail
/usr/sbin/sendmail -s "$SUBJECT" "$EMAIL" < $EMAILMESSAGE
exit 1
fi



echo `scp Current.mp3 root@192.168.2.246:"/Volumes/Big\ Disk/ZWEATHER"`

if [ $? -ne 0 ] ; then
SUBJECT="Weather Currents Download Problem Encountered"
# Email To ?
EMAIL="me@me.com"
# Email text/message
EMAILMESSAGE="There was a problem downloading the currents for the weather.  Please check the server."
echo "This is an email message test"> $EMAILMESSAGE
echo "This is email text" >>$EMAILMESSAGE
# send an email using /bin/mail
/usr/sbin/sendmail -s "$SUBJECT" "$EMAIL" < $EMAILMESSAGE
exit 1
fi





echo `rm Current.mp3`

if [ $? -ne 0 ] ; then
SUBJECT="Weather Currents Download Problem Encountered"
# Email To ?
EMAIL="me@me.com"
# Email text/message
EMAILMESSAGE="There was a problem downloading the currents for the weather.  Please check the server."
echo "This is an email message test"> $EMAILMESSAGE
echo "This is email text" >>$EMAILMESSAGE
# send an email using /bin/mail
/usr/sbin/sendmail -s "$SUBJECT" "$EMAIL" < $EMAILMESSAGE
exit 1
fi

exit

Here's the command run in Putty

--2011-05-06 11:00:02-- ftp://user:*password*@remote_ip_address/Current.mp3
=> `Current.mp3'
Connecting to remote_ip_address:21... connected.
Logging in as user... Logged in!
==> SYST ... done. ==> PWD ... done.
==> TYPE I ... done. ==> CWD not needed.
==> SIZE Current.mp3 ... 19435
==> PORT ... done. ==> RETR Current.mp3 ... done.
Length: 19435 (19K)

100%[======================================>] 19,435 50.0K/s in 0.4s

2011-05-06 11:00:04 (50.0 KB/s) - `Current.mp3' saved [19435]

ssh: connect to host 192.168.2.246 port 22: No route to host
lost connection


server1:~# echo $?
0
server1:~#

192.168.2.246 doesn't exist...and should return an exit code of >0. Why would this return an exit code of 0?

[bschultz]

I found it...I had copied and pasted a portion of previous code.

The echo on the scp command caused the exit code of 0. After all, it did echo the command.

As soon as I took out the echo and just used scp... everything worked as it should.