#!/bin/bash
## generate random string of length 18
function randpass
{
echo `</dev/urandom tr -dc A-Za-z0-9 | head -c18`
}
## get current time stamp
timestamp=$(date +%s);
sessionId="$(randpass).$(randpass).$timestamp";
privateKey='test';
## get substring of sessionId from 0 to 5 characters.
sessionIdPart=${sessionId:0:5};
systemKeyPart=${privateKey:0:4};
## reverse string and store in a variable
word="$(echo "$sessionIdPart" | rev)$(echo "$systemKeyPart" | rev)";
word="$word$sessionId$privateKey";
## make a string md5
hash=`echo -n "$word" | md5sum | awk '{print $1}'`;
hash=${hash:0:10};
breakRest="securedSessionKey=$sessionId&securedHash=$hash";
saveFile=$(date +"%Y-%m-%d %T");
## saveFile would be '2013-08-25 19:23:28'
## calling a url using 'curl' and store response to some file.
curl -s -L
-o "$
saveFile
.html"
"http://domain.com/getStudent?$breakRest" &## "&" sign at the end means run curl in background.
exit 1;
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