parameter in sh
I have 2 sh.
1. env.sh with the following content to define global variables for other script.
if [ $1 = "PROD" ]
then
ENV=PROD; export ENV # JCHOW 07/21/2005
fi
2. then it was called by calling.sh like this ...
# Load the environment and functions
[ -f ./env.sh ] && . ./env.sh . "DEV"
echo $ENV
3. when i run calling.sh, i got errors like
./calling.sh: test: argument expected.
how to fix it?
ASKER
calling.sh looks like this
#!/bin/sh
# Load the environment and functions
[ -f ./envrpl.sh ] && . ./envrpl.sh . "DEV"
echo $ENV
exit
ASKER
I modified calling.sh like this, i got no error but i got nothing with $ENV. I expect $ENV gives me PROD.
#!/bin/sh
# Load the environment and functions
[ -f ./env.sh ] && ./env.sh DEV
echo $ENV
exit
Modify your script to make it looks like:
#!/bin/sh
if [ -f /path-to/envrpl.sh ] ; then
. /path-to/envrpl.sh "DEV"
# a DOT space then script + arg
echo $ENV
fi
exit
#Use full path to the script to make it more portable.
#!/bin/sh
if [ -f /path-to/envrpl.sh ] ; then
. /path-to/envrpl.sh "DEV"
# a DOT space then script + arg
echo $ENV
fi
exit
#Use full path to the script to make it more portable.
[ -f ./env.sh ] && . ./env.sh "PROD"
echo $ENV
echo $ENV
ASKER
no luck.
If i dont have $1 defined inside $envrpl.sh. $ENV echoed as expected with . /path-to/envrpl.sh
However if i have $1,
. /path-to/envrpl.sh "DEV" gives me error as below
test: argument expected
What else is in envrpl.sh besides
if [ $1 = "PROD" ]
then
ENV=PROD; export ENV # JCHOW 07/21/2005
fi
if [ $1 = "PROD" ]
then
ENV=PROD; export ENV # JCHOW 07/21/2005
fi
ASKER
really just that.
have you ever tried calling . /path-to/envrpl.sh "DEV"
It doesnt take parameter like this with a dot in front.
BTW, what does a dot in front mean?
have you ever tried calling . /path-to/envrpl.sh "DEV"
It doesnt take parameter like this with a dot in front.
BTW, what does a dot in front mean?
if envrpl.sh contains
if [ $1 = "PROD" ]
then
ENV=PROD; export ENV # JCHOW 07/21/2005
fi
then
. /path-to/envrpl.sh "PROD"
will set ENV
. /path-to/envrpl.sh "DEV"
will not
and
. /path-to/envrpl.sh
will give an error unless $1 is set
if [ $1 = "PROD" ]
then
ENV=PROD; export ENV # JCHOW 07/21/2005
fi
then
. /path-to/envrpl.sh "PROD"
will set ENV
. /path-to/envrpl.sh "DEV"
will not
and
. /path-to/envrpl.sh
will give an error unless $1 is set
>>BTW, what does a dot in front mean?
It mean "source", since your script is setting up ENV vars.
man source
to learn more details
PS: csh/tcsh use "source", for sh/ksh/bash use . a DOT+ space then scriptname
It mean "source", since your script is setting up ENV vars.
man source
to learn more details
PS: csh/tcsh use "source", for sh/ksh/bash use . a DOT+ space then scriptname
ASKER
ozo,
. /path-to/envrpl.sh "PROD"
will NOT set ENV and output with error parameter expected.
ASKER
please try run it in unix and you will know what i am talking about.
ASKER
ozo and yuzh??????please help!!!
ASKER CERTIFIED SOLUTION
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passing parameters to sourced scripts is unreliable, it depends on OS and/or shell
you better don't use it
The only reliable way to pass values to a sourced script is using shell and/or environment variables itself.
you better don't use it
The only reliable way to pass values to a sourced script is using shell and/or environment variables itself.
I slighly disagree 'cause passing arguments to sourced scripts is no standard and depends on the used shell, see http:/Q_21520411.html also.
No need to change the grading, but future readers should take care ...
No need to change the grading, but future readers should take care ...
# Load the environment and functions
[ -f ./env.sh ] && . ./env.sh . "DEV"
echo $ENV
exactly what calling.sh looks like?