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Reading arguments for a shell script from file

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# 15  
Old 01-11-2012
Quote:
Originally Posted by methyl
Should be
Code:
Site="sitename"

Thanks a mil Methyl. I found the error and fixed it. The envfile.sh was pointing to a different host than it was supposed to. Thanks for your time
---------- Post updated at 06:07 PM ---------- Previous update was at 05:57 PM ----------

Quote:
Originally Posted by Corona688
There is no difference between having them in a file and having them in your file, ergo there is a typo.

Methyl identified it above for you.
Cheers.. I looked it up and it seems really cool. I'm loving the idea of it.

Quote:
While executing the shell script using “dot space dot slash”, as shown below, it will execute the script in the current shell without forking a sub shell.
$ . ./scriptfile
In other words, this executes the commands specified in the scriptfile in the current shell, and prepares the environment for you..
Last edited by goddevil; 01-12-2012 at 11:04 AM..
# 16  
Old 01-11-2012
try this
Code:
xargs -i sh -c './shscript {}' < parameters.txt

Last edited by Franklin52; 01-12-2012 at 04:56 AM.. Reason: Please use code tags for code and data samples, thank you
This User Gave Thanks to tarun_agrawal For This Post:
goddevil
# 17  
Old 01-12-2012
I have run into problem.
I am using the following code to read from parameters.txt
Code:
while read x y
do
    ./shscript $x $y
done < parameters.txt

Code:
$ cat parameters.txt
env value1
env value2
env value3
env value4
env value5
env value6
env value7
env value8

This works perfectly.But if i make a small tweak to the code and include a if condition inside the while loop, only the alternate arguments are being read. For e.g, if i use the following code:
Code:
while read x y
do
    ./shscript $x $y
if [$y -gt 0 ] ; then
 echo The execution was successful
else
 echo Execution failed
fi
done < parameters.txt

The arguments that are passed to the shell are as follows
Code:
./shscript env value1
./shscript env value3
./shscript env value5
./shscript env value7

Can someone tell me why the alternate arguments are being missed? Thanks
# 18  
Old 01-12-2012
Quote:
if [$y -gt 0 ] ; then
Typo in this line. Should be a space character after the [ character.
Also, this is an integer comparison. Is $y and integer?
# 19  
Old 01-12-2012
Quote:
Originally Posted by methyl
Typo in this line. Should be a space character after the [ character.
Also, this is an integer comparison. Is $y and integer?
Code:
if [ "$z" == "MX" ] ; then

I use the code above and the condition works.

I tried inserting a newline character in the file paramers.txt as below and the program works perfectly. I dont use any breaks in my if.. else command.. I dont want to have to insert a new line in the parameters.txt file. I cant see where the logic is going wrong. Smilie
Code:
env value1
 
env value2
 
env value3
 
env value4
 
env value5
 
env value6
 
env value7
 
env value8


The following is my code:
Code:
while read x y z
do
if [ "$z" == "GOD" ] ; then
./shell.sh $x $y
a= parse $y
echo bla bla
if [ $a -gt 0 ] ; then
echo "`read -p "user i/p"`"
else
echo Executing the value............
fi
fi
if [ "$z" == "DEVIL" ] ; then
./ggmu.sh
fi
done<parameters.txt

If i remove the bolded out code above, the script reads the arguments properly!! Why is that if condition screwing up the reading of the parameters.txt file?
Last edited by goddevil; 01-12-2012 at 02:54 PM..
# 20  
Old 01-12-2012
It's not the "if" condition, its the "read -p" (which was not mentioned in your previous post). It's in backticks so it still functions within the "echo" line.
There is only one STDIN channel and that "read -p" is eating data from you main read loop. Every alternate record. QED.


Ps. Please take care to post the script and data which matches the symptoms.
This User Gave Thanks to methyl For This Post:
goddevil
# 21  
Old 01-12-2012
Quote:
Originally Posted by methyl
It's not the "if" condition, its the "read -p" (which was not mentioned in your previous post). It's in backticks so it still functions within the "echo" line.
There is only one STDIN channel and that "read -p" is eating data from you main read loop. Every alternate record. QED.


Ps. Please take care to post the script and data which matches the symptoms.
Ah yes.. I see it now. Thanks.

Is there i any way i can tweak the above code to allow user input without screwing up the file read?
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