hi i want to write a shell script to set environment variables . But i am not been able to set that for the current shell instead i have to spawn a new shell. Is there a way to set the env variable for the current shell using shell script in bash shell ?
Thnx (2 Replies)
Hey all,
I have been using Ksh and in that I am setting Environment variables.
To set Env. Variables I have created my own file "BuildScript.sh" in which i have written :
export CLASSPATH=/somedir/some other dir/file:.
export PATH=/some dir/file:.
But when i am calling this... (4 Replies)
Hi,
I am using the HP-UX machine of version B.11.23. My bashprofile looks like this :
# @(#)B11.23_LR
# Default user .profile file (/usr/bin/sh initialization).
#! /usr/bin/bash
# Set up the terminal:
if
then
eval ` tset -s -Q -m ':?hp' `
else
eval ` tset -s -Q `
fi
stty erase "^H"... (0 Replies)
Hi,
I want to get the value of the env varables using the ksh script. All the env variables are stored in a file.
Eg.
file1
$INPATH
$OUTPATH
myscirpt:
for name in `awk { print $1 } file1`
do
cd $name
done
i'm getting the error like $INPATH not found.
in the same script... (1 Reply)
Hi,
I have a script that sets some env variables.
I want to source the script in a new xterm and
after the script execution is over, the xterm has to be alive with the env variables set according to the script.
I tried
xterm -e "source ./myscript;tcsh" &
The variables are getting set... (3 Replies)
Hi,
I wrote two small scripts to set env variables in a shell.
java_env.csh
#!/bin/csh -fn
setenv JAVA_HOME '/scratch/software/jdk1.5.0_11'
setenv PATH $PATH':'$JAVA_HOME'/bin'
and run it using csh ./java_env.csh
But the env variables are not set. I tried running each line on the... (5 Replies)
I am newbie on Unix system and seek help for updating env variables. The condition is like this:
On Unix server, I log in as oracle user (this is the super for database on Unix), I type > env
all envirnment variables show up. I saw one variable DBA_LIST contains a few email addreses. I need... (2 Replies)
i have a file that i need to edit and replace a single value with another. so i have two variables, $oldvalue and $newvalue but below doesn't work:
ed file.txt << EOF
,s/$oldversion/$newversion/g
wq
EOFi presume it's the $ that is the issue since it's actually special to ed. any suggestions?... (1 Reply)
Hi All,
I have script and it's hardcoded the script ca invoke in user home dir and logs will be redirected to home dir of user.
how to make the same script will be invoke from /usr/bin with out chg the logs and other functions path from /user/homedir .
code is below: pls check how to... (1 Reply)
I have perl script and in the first line we are invoking .sh script to set ENV variables.
e..g
eval '. $envfile; exec $PERL -S $0 "$@"'
I want to change some of the env variables while the program is running and I am settging it like this ..
$ENV{ORACLE_HOME}=trim($oraclehome);... (1 Reply)
Discussion started by: talashil
1 Replies
LEARN ABOUT PHP
eval
EVAL(3) 1 EVAL(3)eval - Evaluate a string as PHP codeSYNOPSIS
mixed eval (string $code)
DESCRIPTION
Evaluates the given $code as PHP.
Caution
The eval(3) language construct is very dangerous because it allows execution of arbitrary PHP code. Its use thus is discouraged.
If you have carefully verified that there is no other option than to use this construct, pay special attention not to pass any user
provided data into it without properly validating it beforehand.
PARAMETERS
o $code
- Valid PHP code to be evaluated. The code mustn't be wrapped in opening and closing PHP tags, i.e. 'echo "Hi!";' must be passed
instead of '<? echo "Hi!"; >'. It is still possible to leave and reenter PHP mode though using the appropriate PHP tags, e.g.
'echo "In PHP mode!"; ?>In HTML mode!<? echo "Back in PHP mode!";'. Apart from that the passed code must be valid PHP. This
includes that all statements must be properly terminated using a semicolon. 'echo "Hi!"' for example will cause a parse error,
whereas 'echo "Hi!";' will work. A return statement will immediately terminate the evaluation of the code. The code will be exe-
cuted in the scope of the code calling eval(3). Thus any variables defined or changed in the eval(3) call will remain visible
after it terminates.
RETURN VALUES eval(3) returns NULL unless return is called in the evaluated code, in which case the value passed to return is returned. If there is a
parse error in the evaluated code, eval(3) returns FALSE and execution of the following code continues normally. It is not possible to
catch a parse error in eval(3) using set_error_handler(3).
EXAMPLES
Example #1
eval(3) example - simple text merge
<?php
$string = 'cup';
$name = 'coffee';
$str = 'This is a $string with my $name in it.';
echo $str. "
";
eval("$str = "$str";");
echo $str. "
";
?>
The above example will output:
This is a $string with my $name in it.
This is a cup with my coffee in it.
NOTES
Note
Because this is a language construct and not a function, it cannot be called using variable functions.
Tip
As with anything that outputs its result directly to the browser, the output-control functions can be used to capture the output of
this function, and save it in a string (for example).
Note
In case of a fatal error in the evaluated code, the whole script exits.
SEE ALSO call_user_func(3).
PHP Documentation Group EVAL(3)