4 ms·

If I unknowingly named my command the same as some system command and the custom command ends up earlier in my path it doesn't really cause any problems does it

by Timpy 4y ago

If I unknowingly named my command the same as some system command and the custom command ends up earlier in my path it doesn't really cause any problems does it? I wasn't using that system command anyways, and my custom command is only going to take priority if my .bashrc file was run first.

xigoi 4y ago
Until you use a different machine and accidentally type your command without realizing it's not there.
Taywee 4y ago
It can if you are executing programs that then try to execute those commands and get your commands instead.
- nerdponx 4y ago
  I wish it was easier to create "snapshots" of a particular set of environment variables in order to use them later as run environments. I also wish that Unix desktop environments generally made it easier to manage env vars, but that's another complaint. And don't get me started on PAM env vars...
  - OJFord 4y ago
    Just env vars? env > "$(date +s).env-snapshot" (And use it again slightly more awkwardly as <$file | xargs -I@ echo '"@"' | tr '\n' ' ' | xargs -I@ env @ cmd or something more convenient to `cmd`.)
    - sigjuice 4y ago
      Should be <$file xargs ...
      - OJFord 4y ago
        Oops, you've exposed that it started off as a useless cat I knew I'd be chastised for ;)
        sigjuice 4y ago
        :) If it is any consolation, I can't make any sense of this. $ <xyz.txt wc -l 8 $ <xyz.txt | wc -l 0
  - fragmede 4y ago
    https://direnv.net/ https://direnv.net/
    - nerdponx 4y ago
      I use Direnv in all of my projects, but it doesn't make it any easier to manage consistent groups of env vars or assign different executables to run in different groups.
  - verrp 4y ago
    > I wish it was easier to create "snapshots" of a particular set of environment variables in order to use them later as run environments. docker gives you this (but only as part of a whole ecosystem, which for various reasons you might not want to hitch your horse to).
  - LanternLight83 4y ago
    Direnv has been mentioned, and it meshes well with functional package managers like Nix and Guix, each of which include the concept of "Profiles". Each profile can access a specific set of programs via it's environment, but PATH is far from the last variable that you can use Direnv or Profiles to control.
tasuki 4y ago
Yes, all of that. And if you later decide to start using the system command, you just rename your custom command.
- eriner_ 4y ago
  I use zsh and have the following alias (rather, function): ``` cp () { rsync -avhW --progress --inplace ${@} } ``` If I ever need to use the `cp` binary, I execute `=cp`, which evaluates to `/bin/cp`.
  - arjvik 4y ago
    Why use rsync? Only for the progress bar?

by Timpy 4y ago

xigoi 4y ago

Until you use a different machine and accidentally type your command without realizing it's not there.

Taywee 4y ago

It can if you are executing programs that then try to execute those commands and get your commands instead.

nerdponx 4y ago
I wish it was easier to create "snapshots" of a particular set of environment variables in order to use them later as run environments. I also wish that Unix desktop environments generally made it easier to manage env vars, but that's another complaint. And don't get me started on PAM env vars...
- OJFord 4y ago
  Just env vars? env > "$(date +s).env-snapshot" (And use it again slightly more awkwardly as <$file | xargs -I@ echo '"@"' | tr '\n' ' ' | xargs -I@ env @ cmd or something more convenient to `cmd`.)
  - sigjuice 4y ago
    Should be <$file xargs ...
    - OJFord 4y ago
      Oops, you've exposed that it started off as a useless cat I knew I'd be chastised for ;)
      - sigjuice 4y ago
        :) If it is any consolation, I can't make any sense of this. $ <xyz.txt wc -l 8 $ <xyz.txt | wc -l 0
- fragmede 4y ago
  https://direnv.net/ https://direnv.net/
  - nerdponx 4y ago
    I use Direnv in all of my projects, but it doesn't make it any easier to manage consistent groups of env vars or assign different executables to run in different groups.
- verrp 4y ago
  > I wish it was easier to create "snapshots" of a particular set of environment variables in order to use them later as run environments. docker gives you this (but only as part of a whole ecosystem, which for various reasons you might not want to hitch your horse to).
- LanternLight83 4y ago
  Direnv has been mentioned, and it meshes well with functional package managers like Nix and Guix, each of which include the concept of "Profiles". Each profile can access a specific set of programs via it's environment, but PATH is far from the last variable that you can use Direnv or Profiles to control.

tasuki 4y ago

Yes, all of that. And if you later decide to start using the system command, you just rename your custom command.

eriner_ 4y ago
I use zsh and have the following alias (rather, function): ``` cp () { rsync -avhW --progress --inplace ${@} } ``` If I ever need to use the `cp` binary, I execute `=cp`, which evaluates to `/bin/cp`.
- arjvik 4y ago
  Why use rsync? Only for the progress bar?