Right. The "mail" command likely forked "/usr/bin/sendmail", which opens a connection to the MTA (originall good old Sendmail, but more likely now postfix or exim, or something else. That in turn might make a connection to a (in this case) a local delivery agent (eg procmail or the like). There might be two or three (maybe four) "pipes". The data will be in those pipes as data buffers.
At Sun, 9 Nov 2025 15:36:12 +0100 [email protected] wrote: > > [email protected] (HE12025-11-09): > > i execute > > > > some_long_running_command | mail billy_bob@localhost > > > > where is the output of the command stored while it is running before it's > > mailed > > Under the responsibility of the mail command. Probably in memory. > > Regards, > -- Robert Heller -- Cell: 413-658-7953 GV: 978-633-5364 Deepwoods Software -- Custom Software Services http://www.deepsoft.com/ -- Linux Administration Services [email protected] -- Webhosting Services
