Environment Variables in C

Posted by tpar44 on Stack Overflow See other posts from Stack Overflow or by tpar44
Published on 2012-09-24T01:13:27Z Indexed on 2012/10/06 21:38 UTC
Read the original article Hit count: 156

Filed under:

I know this type of question has been asked a lot but none of the answers seem to help. I set an environment variable through setenv() function call in Ubuntu Linux. However, the program doesn't seem use this environment variables. If I use getenv() it gets the correct value but the output to the program is wrong. However, when I use export BLOCKSIZE=512 in the shell, the output to the program is correct. I am not spawning different processes from the program. Below is only a code snippet of what I am doing, it is not my whole program.

Is there any reason for this?

Related posts about environment-variables

System Expandable-String Environment Variables Can’t Reference User Environment Variables

as seen on Super User - Search for 'Super User'
Hi, I’ve run into a bit of a situation with Windows environment variables. I’ve narrowed it down to what may or may not makes sense and/or possibly be by design. It seems that expandable-string environment variables of the local machine cannot reference environment variables of the current user. For… >>> More
PowerShell: can't modify environment variables

as seen on Super User - Search for 'Super User'
I have an environment variable set via "system properties - advanced - Environment Variables". I modified the variable's value. In cmd, I see the new value. In PowerShell, the value is still the old value. Trying to set it with [Environment]::SetEnvironmentVariable doesn't have any effect. >>> More
Set environment variables from within a bash shell

as seen on Super User - Search for 'Super User'
Hi, Is there a way to set environment variables from within a (bash) shell script? I want to set some environment variables on some servers using a small script rather than typing. Some forum posts believe it is impossible. Any Ideas? >>> More
Is there a way to set Windows environment variables from the command line PERMANENTLY

as seen on Super User - Search for 'Super User'
Is there any way to set permanently set an environment variable system wide from the command line in Windows? something like >systemset newVar=foo or a file to edit would work well too. >>> More
Change environment variables as standard user (Windows 7)

as seen on Super User - Search for 'Super User'
When clicking on "Advanced system settings", I need to login as the administrator and hence only edit the administrators environment variables (in addition to the machine wide ones). How do I edit the environment variables of a standard user? Details With the migration to Windows 7, I decided to… >>> More

Developer IT

Environment Variables in C - Developer IT

Environment Variables in C

c

environment-variables

setenv

getenv

Related posts about c

Related posts about environment-variables

System Expandable-String Environment Variables Can’t Reference User Environment Variables

PowerShell: can't modify environment variables

Set environment variables from within a bash shell

Is there a way to set Windows environment variables from the command line PERMANENTLY

Change environment variables as standard user (Windows 7)

Categories cloud