I want to set a enviroment variable
VDC_DIR to a particular directory.
I am doing it as
it gets set but when i logout and do relogin than its not there.
one way could be setting it in .profile file.
but i have seen it on another box where it is not present in .profile but its der in list of env variables.
please tell command to set it as permanent env variable.
it is possible to put it in /etc/profile, but I would not recommend that as everyone gets it and eventually /etc/profile get too unweildy. Also if you mess it up, you can't log on and that might make undoing it a little difficult.
Each shell also has it's own startup procedure. For a login to ksh, sh and a few others, they read the .profile in the home directory of the user, then it runs .kshrc. It also runs .kshrc if you spawn a new subshell (i.e. you type ksh on the command line for some reason) For csh, it's .login then .cshrc and there are others too. Can you confirm what shell you are using.
There are also OS specific files you could use, such as /etc/environment, but again everyone will get these, so an error will break it for everyone too.
Another way is to have you PATH set in your .profile to include something that is not generally used but you created, such as /usr/mysite/scripts. If you are in sh, ksh and a few others, you can run a script in there setting the variables you want in such a way that they remain after the script completes:-
From a csh, you would use
I hope that this helps you get started.
Can you explain a little more about what you are trying to achieve, why and for how many people (and the total user population) and someone will probably recommend one way or another.
I am wondering about the following:
stty columns 140
I have found that a number of times I need to set my display columns to a high number (such as 140) but I have to do this every time I login to use putty/ssh. Can we set this with an environmental variable so that it is permanent?
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I am trying to install timbl- memory based learner tools in ubuntu. it after unpacking the tar file it brings the following msg
No package 'ticcutils' found
Consider adjusting the PKG_CONFIG_PATH environment variable if you
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shell script: #!/bin/csh set VAR=12345 echo $VAR
will peacefully give the output 12345 at shell. I need to use C++ to do the same in some part of the code:
string str = "12345";
retValue="set var1= "+str;
system(retValue1.c_str());
system("echo $var1");
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Hi all,
I am fairly new to unix scripting and will like to know how to dynamically set the name of an environment variable to be used.
We have a .env file where we defined the names and locations of data files, trigger files, directories .... etc
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Hi All,
I'm trying to write an menu driven program to automate some functions which involve loging to multiple hosts. The hosts can differ for every use, so I thought I would use an config file to get the hostnames. Now I need to set those values in the config file to environment variable to... (6 Replies)
I've searched Google and now this forum. Best guess is my search fu is not good (and it probably isn't). The Google search did bring me here.
Background
I have a number of Korn Shell scripts who all use one of 3 values for an environment variable used in the backup system.
On occasion one or... (8 Replies)
Hi,
I already have one CPP program which invokes the C program.And the C program contains whole function definitions..!This is a working program..I have to enable the logs in both CPP as well as in the C program ..!So I am reading the enviornmental variable log path from the CPP and doing the... (2 Replies)
I have function declaration in Java and same function definition written in C programming language.. A JNI call from Java is made to a fuction...Function would set the environment variable { putenv(cEnvString1);} using C-built -in function ..and later return the encrypted string...
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Hi to all...
I'm currently running a C++ program in Unix environment and it is dependent to a Unix environment variable with a date value.
ex: echo $DateToday
20060403
I want to change that date in my C++ program, changing the value date to 20061120 and revert back to original... (6 Replies)