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In TCL, how can I print all environment variables using a single line command?
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Use " printenv " (or " env ") to list all the environment variables. Use " setenv varname value " and " unsetenv varname " to set and unset an environment variable. Use " set varname=value " and " unset varname " to set and unset a local variable for the current process.
Environment variables are accessible via the built-in global variable env (fully qualified it is ::env ). You use this like any other Tcl array. yea, your procedure is executed, it gives all the environment variables.
If you want to put environment variables in a central file (i.e. . bash_profile ) so that other programs can source them, then it should be pretty easy to get Tcl to parse that file and set the variables in the env array. Show activity on this post.
Qualifiers are namespace names separated by double colons (::). For the string ::foo::bar::x, this command returns x, and for :: it returns an empty string. This command is the complement of the namespace qualifiers command.
There is an array called env that stores all the environment variables. So you can simply do this:
puts [array get env]
or simply
parray env
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