docs(cli): Fix documentation about usage of deno completions script (#8369)

Co-authored-by: Bartek Iwańczuk <biwanczuk@gmail.com>

1 files changed, 16 insertions, 2 deletions

diff --git a/cli/flags.rs b/cli/flags.rs
index 8cfa45e08..82fbf6541 100644
--- a/cli/flags.rs
+++ b/cli/flags.rs
@@ -814,8 +814,22 @@ fn completions_subcommand<'a, 'b>() -> App<'a, 'b> {
     .about("Generate shell completions")
     .long_about(
       "Output shell completion script to standard output.
-  deno completions bash > /usr/local/etc/bash_completion.d/deno.bash
-  source /usr/local/etc/bash_completion.d/deno.bash",
+
+bash:
+  deno completions bash | sudo tee /etc/bash_completion.d/deno.bash > /dev/null
+  source /etc/bash_completion.d/deno.bash
+
+zsh:
+  deno completions zsh |sudo tee /usr/local/share/zsh/site-functions/_deno
+
+  Make sure to run compinit after the above command
+
+fish:
+  deno completions fish > ~/.config/fish/completions/deno.fish  
+
+powershell:
+  deno completions powershell > $profile
+  .$profile",
     )
 }