On 08Aug2016 17:13, bruce <badouglas@xxxxxxxxx> wrote:
Got a prob, and maybe I'm just tired. As far as I can tell, sys env vars
should be double quoted >"< inside a curl.
No.
What you have is a shell syntax issue: the quoting of a string affects what the
shell will do to it _before_ the command is issued. So:
x=1
echo 'x=$x'
echo "x=$x"
will issue the output:
x=$x
x=1
Note that this is NOT DONE BY ECHO, and likewise, not by curl. The shell is
constructing the echo command, and for the former it supplies the string
x=$x
and for the latter the string:
x=1
So, to your commands:
echo '' > 1aa.lwp
This make a file with a single blank line. You you want a geniunely empty file,
use:
>1aa.lwp
on its own. The shell will open and trucate it, then close it, running no
command. Thus, an empty file.
curl -vvv -A "Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.0.11)
Gecko/2009061118 Fedora/3.0.11-1.fc9 Firefox/3.0.11" --cookie-jar 1aa.lwp
--cookie 1aa.lwp -L "
https://public.lionpath.psu.edu/psp/CSPRD/EMPLOYEE/HRMS/c/COMMUNITY_ACCESS.CLASS_SEARCH.GBL
"
Rule 1: if you are _not_ substituting shell environment values, use single
quote instead of doubles. Always. It avoids accidents.
I'm also hoping those isolates quote marks above after the -L are artifacts of
the mail cut/paste, and not isolated in your script. If they are, you are
supplying curl a string with a leading and trailing newline character. It may
be quietly stripping those for you, but the string as supplied should really be
nice and clean i.e. _exactly_ the URL you intend, no extra characters.
So: turn these double quotes into single quotes.
icsidval=$(curl -vvv -A "Mozilla/5.0 (X11; U; Linux x86_64; en-US;
rv:1.9.0.11) Gecko/2009061118 Fedora/3.0.11-1.fc9 Firefox/3.0.11"
--cookie-jar 1aa.lwp --cookie 1aa.lwp -e "
https://public.lionpath.psu.edu/psp/CSPRD/EMPLOYEE/HRMS/c/COMMUNITY_ACCESS.CLASS_SEARCH.GBL";
-L "
https://public.lionpath.psu.edu/psc/CSPRD/EMPLOYEE/HRMS/c/COMMUNITY_ACCESS.CLASS_SEARCH.GBL";
| grep ICSID | grep -oP "value='\K[^']+")
Same here: single quotes. Especially in your "grep -oP" command: it is merely
fortuitous that \K is not special to shell strings. I see you have embedded
single quotes in your regexp, perhaps that explains the double quoting. If so,
try this:
grep -oP "value='\\K[^']+"
The shell will reliably turn the \\ into a \ inside the double quotes. As it is
the slosh only survives because \K is not special inside shell double quotes.
Had you used something special, eg \$ the quote would have been eaten in order
to protect the $.
echo $icsidval ### <<<<< this displays the sys env data..
Excellent.
curl -v -A "Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.0.11)
Gecko/2009061118 Fedora/3.0.11-1.fc9 Firefox/3.0.11" --cookie-jar 1aa.lwp
--cookie 1aa.lwp -d
'ICAJAX=1&ICNAVTYPEDROPDOWN=0&ICType=Panel&ICElementNum=0&ICStateNum=2&ICAction=SSR_CLSRCH_WRK_CAMPUS%240&ICXPos=0&ICYPos=65&ResponsetoDiffFrame=-1&TargetFrameName=None&FacetPath=None&ICFocus=&ICSaveWarningFilter=0&ICChanged=-1&ICAutoSave=0&ICResubmit=0&ICSID="$icsidval"&ICActionPrompt=false&ICBcDomData=undefined&ICFind=&ICAddCount=&ICAPPCLSDATA=&SSR_CLSRCH_WRK_CAMPUS$0=BK'
-e "
https://public.lionpath.psu.edu/psc/CSPRD/EMPLOYEE/HRMS/c/COMMUNITY_ACCESS.CLASS_SEARCH.GBL";
-L "
https://public.lionpath.psu.edu/psc/CSPRD/EMPLOYEE/HRMS/c/COMMUNITY_ACCESS.CLASS_SEARCH.GBL
"
Here you're wrongly presuming that the double quotes _inside_ your long single
quoted data after the -d "activate" parameter substitution; they do not. Inside
single quotes nothing is special except a closing single quote.
What you want to do here, _unlike_ all the other long strings, is to use double
quotes around the whole thing:
"ICAJAX=1&ICNAVTYPEDROPDOWN=0&ICType=Panel&ICElementNum=0&ICStateNum=2&ICAction=SSR_CLSRCH_WRK_CAMPUS%240&ICXPos=0&ICYPos=65&ResponsetoDiffFrame=-1&TargetFrameName=None&FacetPath=None&ICFocus=&ICSaveWarningFilter=0&ICChanged=-1&ICAutoSave=0&ICResubmit=0&ICSID=$icsidval&ICActionPrompt=false&ICBcDomData=undefined&ICFind=&ICAddCount=&ICAPPCLSDATA=&SSR_CLSRCH_WRK_CAMPUS$0=BK"
and get rid of the inner ones - they're doing nothing for you.
BTW, you may find it helpful to turn on shell execution tracing when debugging
issues like this. It shows you the commands the shell actually issues, _after_
doing parameter subtitution. So put a:
set -x
at the start of your script, or at the start of the stuff you're debugging. For
this it would have been more helpful to you than curl's -v options.
Cheers,
Cameron Simpson <cs@xxxxxxxxxx>
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