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how to extract last word and a number from a string

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Top Forums Shell Programming and Scripting how to extract last word and a number from a string
# 1  
Old 02-23-2012
how to extract last word and a number from a string
I have the following script (which I made by my self)

Code:
#!/bin/bash

# add a few empty lines to make it more legible

# add a date description on each update interval
echo "" >> /home/user/DYN_DNS_IP_change.log
echo "" >> /home/user/DYN_DNS_IP_change.log
echo "" >> /home/user/DYN_DNS_IP_change.log
#date_ =  date &
#string = "--------------------------------" + date_ + "--------------------------------"
echo "--------------------------------" >> /home/user/DYN_DNS_IP_change.log
date >> /home/user/DYN_DNS_IP_change.log
echo "--------------------------------" >> /home/user/DYN_DNS_IP_change.log
echo string >> /home/user/DYN_DNS_IP_change.log


echo "Running update IP address for @ domain" >> /home/user/DYN_DNS_IP_change.log
wget https://dynamicdns.park-your-domain.com/update?host=@&domain=xxxxx&password=AAAAAAAAAAAAAAA >> /home/user/DYN_DNS_IP_change.log


echo "--------- END OF ENTRY ---------" >> /home/user/DYN_DNS_IP_change.log

Now when running "wget https://dynamicdns.park-your-domain.com/update?host=@&domain=xxxxx&password=AAAAAAAAAAAAAAA", I get somethink like this SETDNSHOSTeng666.666.666.6600true (this really is IP address, I've just masked it, like the passwords and domains, etc.)
Now I'd like to extract this last word (true or false, depending on result) as well as the ip address. I dont know why, but there are 2 zeros right after the ip address. Also how could I make something like this: "----- DATE ----", I can only do "----" new line "DATE" new line "-----".
# 2  
Old 02-23-2012
You can use here-documents to simplify this eg:

Code:
cat <<EOF
 
 
 
-------------------  $(date) ---------------------
Running update IP address for @ domain
EOF >> /home/user/DYN_DNS_IP_change.log

Important to note that the "EOF" string at the end must be at the start of the line (if your indenting your code dont indent the EOF or it won't match with the <<EOF marker).

$(date) runs the date command and puts its output in-line.


Are you sure there aren't any non-printables in that return string? Try piping the output thru od -c eg:
Code:
wget https://dynamicdns.park-your-domain.com/update?host=@&domain=xxxxx&password=AAAAAAAAAAAAAAA | od -c

# 3  
Old 02-24-2012
Code:
user@comp:~$ wget https://dynamicdns.park-your-domain.com/update?host=@&domain=xxxxx.AAA&password=666666666666666666666666666666666 | od -c
[1] 7154
[2] 7155
0000000
--2012-02-24 05:07:52--  https://dynamicdns.park-your-domain.com/update?host=@
user@comp:~$ Resolving dynamicdns.park-your-domain.com... 74.81.78.59
Connecting to dynamicdns.park-your-domain.com|74.81.78.59|:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: 423 [text/html]
Saving to: `update?host=@.1'

100%[==============================================================================================================>] 423         --.-K/s   in 0s      

2012-02-24 05:07:52 (72.2 MB/s) - `update?host=@.1' saved [423/423]

^C
[1]-  Done                    wget https://dynamicdns.park-your-domain.com/update?host=@
[2]+  Done                    domain=xxxxx.AAA
juzer@ruter:~$

And here I had to ^C to exit and get this [2]+ Done message and return to bash, as it doesnt finish it self.

This is what I get after I manually enter this link to my web browser
SETDNSHOSTeng[my ip address here]00true
# 4  
Old 02-24-2012
For starters, you need to quote your URL. The ampersands in the URL are being interpreted by the shell and your command isn't running as you expect it too.

You might also want to set the -nv command line option on the wget command. That should disable the progress meter. That can be an issue if you are tying to capture other information that wget writes to stderr.
# 5  
Old 02-24-2012
Code:
wget http://dynamicdns.park-your-domain.com/update?host=mail&domain=DOMAIN&password=PASSWORD -O >> /home/user/DYN_DNS_IP_change.log

This is exactly how I execute it, or some other variations of parameters given to wget.
# 6  
Old 02-24-2012
I would suggest:

Code:
wget -nv "http://dynamicdns.park-your-domain.com/update?host=mail&domain=DOMAIN&password=PASSWORD" -O >> /home/user/DYN_DNS_IP_change.log



The quotes prevent shell from treating the '&' as an asynch operator and breaking the command at that point.

The -nv should turn off the progress meter. The progress meter might cause issues if you're trying to capture output from wget. I don't know if this will solve your problem, but they are the two things I'd try straight off.
# 7  
Old 02-25-2012
Nah, by running with that parameter, it just outputs what it had in the input, along with some other stuff, like the time, and some other numbers, but not the output which should've been seen.
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