Re: [PATCH] printenv: add feature to print names only

[Gianluca Mascolo]

---- Il mar, 13 dic 2022 14:04:31 +0100, Pádraig Brady  ha scritto ---

 >  
 >  
 > This has some merit, 
 > given that's it's awkward to postprocess printenv output 
 > in the presence of multiline env values. 
 >  
 > Could you detail some use cases for this? 
 >  
 > thanks, 
 > Pádraig 
 > 

I think that it may be useful in a couple of cases at least:
1) I work remotely and during online meetings I often need to share my screen. 
Sometimes I need to check if a variable containing an authentication token is 
exported locally before executing a command without showing it's content to 
remote attendees. At the moment, I use an alias for that purpose:
alias lsenv='printenv  | grep --color=never -oE "^[^=]+"'

2) It may be useful to print some information about the current environment of 
CI/CD pipeline scripts for debugging purposes and be sure that nothing 
sensitive will be displayed (although many CI/CD systems automatically mask 
those kinds of values with asterisks).

Using printenv directly for these scopes is just a convenience, and it can be 
done in other ways, but I think that embedding this small feature into printenv 
would be nice.

Thanks
Gianluca