Script help

[allanm77]

Hi All,

Have a piece of code which makes a curl to a webpage and returns a list of host which are currently up/down (down hosts are derived from grep -A1 DOWN command below and saved to a tmp file)

From that file I need to generate a URL and call it to mark the hosts as up. The URL that needs to be generated is like this -

http://$HOST:$PORT/URI/$host-from-tmp-file:$port-from-tmp-file

where

$host-from-tmp-file would need to come from the tmp file (/tmp/mon_prd.tmp)
$port-from-tmp-file would need to come from the tmp file (/tmp/mon_prd.tmp)

 ENV1)
    HOST=`command | awk -F: '{print $1}'`
    PORT=`command | awk -F: '{print $2}'|head -1`
    for i in $HOST
    do
       curl -s "http://$i:$PORT/virtual/hostlist" | grep "DOWN"
       curl -s "http://$i:$PORT/virtual/hostlist" | grep -A1 "DOWN" > /tmp/mon_prd.tmp
       if [ `echo $?` -eq 0 ]
       then
      mail -s "Subject" mail@mail.com < /tmp/mon_prd.tmp
      fi
       echo -n "" > /tmp/mon_prd.tmp
    done
 ;;
 *)
    echo "Invalid option"
 ;;
esac

 Thanks,

Allan.

[James R. Ferguson]

---

@allanm77 wrote:

From that file I need to generate a URL and call it to mark the hosts as up. The URL that needs to be generated is like this -

http://$HOST:$PORT/URI/$host-from-tmp-file:$port-from-tmp-file

where

$host-from-tmp-file would need to come from the tmp file (/tmp/mon_prd.tmp)
$port-from-tmp-file would need to come from the tmp file (/tmp/mon_prd.tmp)

---

Allan:

Post a sample (or two) of the *contents* of your '/tmp/mon_prd.tmp' file,  As usual, showing actual data leads to better solutions than making assumptions based on vague descriptions.

Snipping out the data you need to construct your URL should be quite simple.

Regards!

...JRF...

[Dennis Handly]

>PORT=`command | awk -F: '{print $2}'|head -1`

No need for head(1):

PORT=$(command | awk -F: '{print $2; exit}')

>if [ `echo $?` -eq 0 ]

I'm not sure why you are using echo?

if [ $? -eq 0 ]; then

And better to use mailx vs mail.

[James R. Ferguson]

---

@Dennis Handly wrote:

No need for head(1):

PORT=$(command | awk -F: '{print $2}; exit')

---

Right, but you meant to write that as:

PORT=$(command | awk -F: '{print $2;exit}')

Regards!

...JRF...

[Dennis Handly]

>but you meant to write that as:

Oops, history suitably retconned.  ;-)

[allanm77]

Hi JRF

Sample of /tmp/mon_prd.tmp -

<td>DOWN</td>
<td>host:port <a title="debug" href="URI">[I]</a> <a title="debugger" href="http://host:1port/debug">[D]</a> <a title="browse" href="http://host/corp/java/browse.jsp/wa/viewService?serviceUrl=http%3A//host%3A8000/java/Service.jsp/ww&amp;serviceUrl=http%3A//host%3A1port/service/lib">[TB]</a></td>

Thanks

Allan.

[allanm77]

Where host: host1.corp.foobar.com

[allanm77]

Basically need to contruct the URL based on the above file.

Thanks,

Allan.

[allanm77]

Any help is greatly appreciated!

[James R. Ferguson]

---

@allanm77 wrote:

Basically need to contruct the URL based on the above file.

---

Maybe I'm missing something. but showing *both* the input *and* the desired output would be more helpful than what you offered thus far.

Regards!

...JRF...

[allanm77]

Ok, here's another dig, the script above makes a call to a webpage(html based), the output that we get is like this -

<td>DOWN</td>
<td>host1.corp.foobar.com:port <a title="debug" href="URI">[I]</a> <a title="debugger" href="http://host1.corp.foobar.com:1port/debug">[D]</a> <a title="browse" href="http://host1.corp.foobar.com/corp/java/browse.jsp/wa/viewService?serviceUrl=http%3A//host%3A8000/java/Service.jsp/ww&amp;serviceUrl=http%3A//host%3A1port/service/lib">[TB]</a></td>

I need to generate a URL out of the above output which is like this -

curl http://$HOST:$PORT/URI/host1.corp.foobar.com:port

HOST is the variable defined in the script initially,
PORT is the variable defined in the script initially,
host1.corp.foobar.com is from curl's output saved to a tmp file,
port is from the curl's output saved to a tmp file.


Thanks,
Allan.

[James R. Ferguson]

Hi Allan:

OK, you can add this snippet to you script to capture the information you need to compose your URI.  You need merely to divide the returned variable into it's two parts, as delimited by a colon.

# VARS=$(perl -nle 'm{<td>(.+?):(.+?)<} and print qq($1:$2)' file)

 Regards!

...JRF...

[allanm77]

Thanks JRF, can this be constructed through sed instead?

Allan.

[James R. Ferguson · Accepted solution]

---

@allanm77 wrote:
Thanks JRF, can this be constructed through sed instead?

Allan.

---

HI (again) Allan:

Well, if you force me :-) then try this (given your data):

sed -ne 's/<td>\(.*:\)/\1/;s/<a.*$//p' 

Regards!

...JRF...