lab 86 - srv
By
caerwyn
NAME lab 86 - srv NOTES This from a post on 9fans , and also on Tip O' the Day % dc >[0=1] | echo 0 > /srv/desk Plan 9's srv(3) acts as a bulletin board for open file descriptors, other namespaces see all the files in srv, and so can read and write to /srv/desk. Inferno has srv(3) which is a file2chan registry, but is also visible to all namespaces on the host. (see also srv9(3) ) The current implementation of sh-file2chan(1) does not allow the above. The closest I got was, % load file2chan % calc >[0=1] | {file2chan /chan/desk {rblock; putrdata &} {fetchwdata > /fd/0}} & % stream -b 1 /chan/desk % echo 1+1 > /chan/desk I tried implementing a command equivalent to srv(4) on Plan 9. It takes a command block or network address and post it in the srv registry. % srv {calc >[1=0]} /chan/desk It using an existing '#s' instance if there is one, else binds a new one. Now we can open a console to /chan/desk from another window % ...