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Top Forums Shell Programming and Scripting Reading arguments for a shell script from file Post 302589729 by goddevil on Thursday 12th of January 2012 12:19:40 PM
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
 

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tcp-env(1)                                                    General Commands Manual                                                   tcp-env(1)

NAME
tcp-env - set up TCP-related environment variables SYNOPSIS
tcp-env [ -rR ] [ -ttimeout ] program [ arg ... ] DESCRIPTION
The input for tcp-env must be a TCP connection. tcp-env finds out information about that connection, puts the information into several environment variables as described in tcp-environ(5), and runs program with the given arguments. Usually tcp-env is run from inetd. It might instead be run from another server that already sets up the right environment variables; if PROTO is set to TCP when tcp-env is invoked, tcp-env assumes that all the other variables are set up properly, and it does not check whether the input is a TCP connection. OPTIONS
-r (Default.) Attempt to obtain TCPREMOTEINFO from the remote host. -R Do not attempt to obtain TCPREMOTEINFO from the remote host. -ttimeout Give up on the TCPREMOTEINFO connection attempt after timeout seconds. Default: 30. SEE ALSO
tcp-environ(5), inetd(8) tcp-env(1)
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