...grams are involved.) For most purposes, it is more useful to use the environment variable LOGNAME to find out who the user is. This is more flexible precisely because the user c…...grams are involved.) For most purposes, it is more useful to use the environment variable LOGNAME to find out who the user is. This is more flexible precisely because the user c…...grams are involved.) For most purposes, it is more useful to use the environment variable LOGNAME to find out who the user is. This is more flexible precisely because the user c…