Login or Register to Ask a Question and Join Our Community


Shell Programming and Scripting

passing arguments to external script

Login to Discuss or Reply to this Discussion in Our Community

 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting passing arguments to external script
# 1  
Old 04-04-2011
passing arguments to external script
Hi!

I have a python script that requires arguments and these arguments are file paths. This script works fine when executed like this:
/my_python_script "file_path1" "file_path2"
(i added quotes as some file names may have weird characters)

the issue happens when i launch my python script from within a bash script. i do get the variable file_paths as "file_path1" "file_path2"

in my bash script i have:
echo "$file_paths"
and this will return:
"file_path1" "file_path2"

but when my bash script contains:
/my_python_script "$file_paths"
it produces an incorrect result

Can anyone please shed some light into what i'm missing
# 2  
Old 04-04-2011
Quote:
Originally Posted by gigagigosu
in my bash script i have:
echo "$file_paths"
and this will return:
"file_path1" "file_path2"
I sincerely doubt that. echo doesn't put quotes around things like that.

What's the actual contents of the file_paths variable?
Quote:
but when my bash script contains:
/my_python_script "$file_paths"
it produces an incorrect result
Incorrect in what fashion?
# 3  
Old 04-04-2011
my script is:

Code:
source_folder=/my_files
cd "$source_folder"
if [ "$(ls -A)" ]; then
for PDF_file in *
 do
  quoted_filename=\"$source_folder/$PDF_file\"
  all_PDFs="$all_PDFs $quoted_filename"
 done
fi

echo "$all_PDFs"
/Scripts/Combine_PDFs_python.py -o /TEST`date +%H-%M-%S`.pdf "$all_PDFs"

this will output:
Code:
 "/my_files/1.pdf" "/my_files/2.pdf"


my python script (part of the OS) is supposed to join these PDFs but it produces an empty PDF
Last edited by Franklin52; 04-04-2011 at 02:11 PM.. Reason: Please use CODE TAGS
# 4  
Old 04-04-2011
Quote:
Originally Posted by gigagigosu
Hi!

I have a python script that requires arguments and these arguments are file paths. This script works fine when executed like this:
/my_python_script "file_path1" "file_path2"
(i added quotes as some file names may have weird characters)

the issue happens when i launch my python script from within a bash script. i do get the variable file_paths as "file_path1" "file_path2"

in my bash script i have:
echo "$file_paths"
and this will return:
"file_path1" "file_path2"

but when my bash script contains:
/my_python_script "$file_paths"
it produces an incorrect result

Can anyone please shed some light into what i'm missing
Don't use quotes:
Code:
/my_python_script $file_paths

# 5  
Old 04-04-2011
Franklin52,

i tried that with same undesired result
# 6  
Old 04-04-2011
What happens when you run the script manually with those names?

There may be other reasons than filenames that your script is failing.

Also, what are the exact contents of the file_paths variable? Not made up, not paraphrased.
Last edited by Corona688; 04-04-2011 at 12:37 PM..
# 7  
Old 04-04-2011
my bash script currently end like this:
Code:
/Scripts/Combine_PDFs_python.py -o /TEST`date +%H-%M-%S`.pdf "$all_PDFs"

and it this will output:
Code:
"/my_files/1.pdf" "/my_files/2.pdf"

if i add two lines as per below:
Code:
sleep 1 # to create a different output file
/Scripts/Combine_PDFs_python.py -o /TEST`date +%H-%M-%S`.pdf "/my_files/1.pdf" "/my_files/2.pdf"

will produce the expected result

---------- Post updated at 12:36 PM ---------- Previous update was at 11:38 AM ----------
Code:
echo $all_PDFs
"/my_files/1.pdf" "/my_files/2.pdf"

/Scripts/Combine_PDFs_python.py -o /TEST`date +%H-%M-%S`.pdf $all_PDFs

this command produces an empty PDF (incorrect)
Code:
/Scripts/Combine_PDFs_python.py -o /TEST`date +%H-%M-%S`.pdf "/my_files/1.pdf" "/my_files/2.pdf"

this command produces a correct result, the only difference is replacement of $all_PDFs with content... what am i doing wrong?
Last edited by Franklin52; 04-04-2011 at 02:14 PM.. Reason: Please use code tags
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Passing arguments to php script

i want to be able to pass arguments to a php script if it is being piped: cat myphpscript.php | php - $1 $2 $3 blah blah This usually works for other script languages...i.e. ruby: cat myrubyscript.rb | ruby - $1 $2 $3 blah blah so my question is, how can i pass arguments to my php... (1 Reply)
Discussion started by: SkySmart
1 Replies

2. Shell Programming and Scripting

Passing arguments while running the script

Hi, I have a requirement for creating a MQ (queue) where the inputs has to be passed as arguments. Running the script as below ./hi.sh "Servername" "QueueManagername" "QueuecreationCommand" cat hi.sh echo "Welcome to $1" runmqsc $2 < $3 But the queue creation command is... (9 Replies)
Discussion started by: Anusha M
9 Replies

3. Shell Programming and Scripting

Passing arguments to a bash script

Hi, I wanted to pass an argument to a bash script. So that the argument is used inside the awk command inside the bash script. I know the noraml way of passing argument to a bash script as below : sh myScript.sh abc Inside the bash script i can use like this myArg1=$1 wc $myArg But... (8 Replies)
Discussion started by: shree11
8 Replies

4. Shell Programming and Scripting

Passing arguments to a perl script

Hi I need to pass comma seperated arguments to a perl script? It is like: Exect.pl -d GUI1,GUI2,GUI3 and I need to store these argsGUI1,GUI2,GUI3 in an array. can anyone suggest how to do that: (1 Reply)
Discussion started by: rkrish
1 Replies

5. Shell Programming and Scripting

Problem in passing date to external function from perl script.

my $sysdate = strftime('%Y-%m-%d', localtime ); biDeriveByDate('Table_Str',$sysdate,\@lIndx,\@lResVals) In a perl script, when I'm trying to pass $sysdate to some external function it's not working since $sysdate is passed as a string mentioned above but my function is expecting a date value... (1 Reply)
Discussion started by: Devesh5683
1 Replies

6. Shell Programming and Scripting

passing arguments to sql script

Hi Gurus, i have one requirement in unix script, i have a file called abc.txt in that few lines are there with the empid, i need to read each line and pass to .sql script. ex: abc.txt 2345 2346 1243 1234 i need to pass these arguments to .sql script rom unix ex: select * from... (1 Reply)
Discussion started by: Devendar
1 Replies

7. Shell Programming and Scripting

problem passing arguments to script

Hi, I am writing a script, which is invoked from other system using ssh. I have problems reading the arguments passing to the script. If the argument has a space in it (ex "rev 2.00"), the script considers "rev" as 1 argument and "2.00" as another. Instead i want "rev 2.00" to be considered... (5 Replies)
Discussion started by: cjjoy
5 Replies

8. UNIX for Advanced & Expert Users

Passing blank arguments to a script

All, I have a cron job script that receives several command line arguments. At some point if there are validation problems and the job cannot be run, it duplicates the entire command line into a temporary text file which is later executed as a script. Unfortunately when I pass the list of received... (7 Replies)
Discussion started by: rm-r
7 Replies

9. Shell Programming and Scripting

Passing arguments to a Perl script

I am playing around with Perl and wrote the script below that is executed from the command line, it will split data up in a file based on a value supplied. When executed you provide two arguments - the file that contains the data to be split and the character you want to split by. It works as... (4 Replies)
Discussion started by: jyoung
4 Replies

10. Shell Programming and Scripting

Passing arguments to a script

I've written a script (bgrep) for a more advanced grep command (& attached a cut down version below). I'm trying allow all grep options to be used, or in any combination. The script works fine if I type say bgrep -i -files product it will return a non-case sensitive list of matches for... (3 Replies)
Discussion started by: Kevin Pryke
3 Replies
Login or Register to Ask a Question