Unable to change environment variables in bash script
Hello!
For the moment some settings in my .bashrc contain the password of my company's firewall, which is not a good idea. I would like to use the string "PASSWORD" set in .bashrc and a script that changes all appearances of "PASSWORD" in the environment variables by the actual password (which will be typed by me on the keyboard).
So if my password is 'Linda' the script has to change for instance the environment variable http_proxy from
myuser:PASSWORD
to
myuser:Linda
Could you please help me to fix the script below? There are two lines that do not work (indicated in the script). I have already tried many combinations of eval, \$$, etc...
this is my first post so Hello,
here is my question
@top level Makefile should not set values for
environment variables FC, CC, FFLAGS (etc) but
use the ones that mpi_make sets.
So as you can see i have to run an mpi program, in fortran and i am supposed to do the above.the program was... (3 Replies)
1. The problem statement, all variables and given/known data:
Write a shell program called myenv which takes one argument. The argument should be the name of an environment variable, such as PATH HOME etc. myenv should print out the value of the variable given as the argument. If no argument is... (1 Reply)
Hi all!
I know that environment variables can be set on the .bashrc file, but I need to set them from a sh script. I saw a lot of websites that teach this but it doesn't work for me.
#!/bin/sh
DEKTOP=$DESKTOP=:/home/rrodrigues/Desktop
export DESKTOP
if I do echo $DESKTOP returns me... (10 Replies)
Hello Everyone
I need to create a script file which must append some lines to a target text file, I'm using sed for windows, the script file look like this:
{
a\
STRINGTABLE DISCARDABLE\
BEGIN\
5, 150 {a\
#define RC_SHELL, "%ID_SHELL%"\
#define RC_NAME, "%ID_NAME%"\
END
}
... (1 Reply)
Hi All,
I am using ETL tool Datastage and is installed on Linux environment. Few environment variables are set in datastage. Now my requirement is to use those environment variables in a unix script.
Is there any option I can do it?
Sugeestions from people working on datastage and linux... (1 Reply)
Hi Guys,
I have a a bash script and i am exporting a variable in it.
I am calling a csh script from this bash script.
The variable "ABC" will be visible in csh script.
ks.bash
export ABC = abc
./kp.csh
ab.csh
echo $ABC
setenv ABC =cde (i want to assign this value to ABC only if... (4 Replies)
Hi,
I meet an problem that it cannot change Terminal environment variable in a perl or bash script.
This change can only exist and become effective in script lifetime.
But I want to make this change take effect in current opened Terminal.
In our view, the thought seems to be impossible,
As... (9 Replies)
I have tried with the following:
csh -c 'source ~/.cshrc; exec bash' # works perfectly
(cat ~/.cshrc; echo exec bash) | csh # not working
And, using sed, I successfully retrieved the environment variables from ~/.cshrc
sed -rn 's/setenv\s+(\S+)\s+(.*)$/export \1=\2/p' ~/.cshrc
but now... (6 Replies)
Hi everyone,
I wrote a script that is supposed to be run by cron on a daily basis. It works just fine if I run it manually, but due to a lack of environment variables (which are available during my user session but not when cron runs the script) it keeps failing to run successfully.
Here's the... (2 Replies)
Hi All
Thanks for reviewing my question.
I have a sh script where I used an environmental variable for the directory for the file I need to check to ensure before executing a process.
I have confirmed the permissions and I can find the file if I use a hard coding of the directory. This is a... (5 Replies)
Discussion started by: rstojkovic68
5 Replies
LEARN ABOUT OSF1
escape
escape(1) Mail Avenger 0.8.3 escape(1)NAME
escape - escape shell special characters in a string
SYNOPSIS
escape string
DESCRIPTION
escape prepends a "" character to all shell special characters in string, making it safe to compose a shell command with the result.
EXAMPLES
The following is a contrived example showing how one can unintentionally end up executing the contents of a string:
$ var='; echo gotcha!'
$ eval echo hi $var
hi
gotcha!
$
Using escape, one can avoid executing the contents of $var:
$ eval echo hi `escape "$var"`
hi ; echo gotcha!
$
A less contrived example is passing arguments to Mail Avenger bodytest commands containing possibly unsafe environment variables. For
example, you might write a hypothetical reject_bcc script to reject mail not explicitly addressed to the recipient:
#!/bin/sh
formail -x to -x cc -x resent-to -x resent-cc
| fgrep "$1" > /dev/null
&& exit 0
echo "<$1>.. address does not accept blind carbon copies"
exit 100
To invoke this script, passing it the recipient address as an argument, you would need to put the following in your Mail Avenger rcpt
script:
bodytest reject_bcc `escape "$RECIPIENT"`
SEE ALSO avenger(1),
The Mail Avenger home page: <http://www.mailavenger.org/>.
BUGS
escape is designed for the Bourne shell, which is what Mail Avenger scripts use. escape might or might not work with other shells.
AUTHOR
David Mazieres
Mail Avenger 0.8.3 2012-04-05 escape(1)