wittig@gmdzi.gmd.de (Georg Wittig) (09/13/90)
Is it possible (in sh or in csh) to execute a program that is read from stdin? For example, if the program ``myprog'' is in compressed format, it isn't nice to type uncompress myprog.Z ; myprog params_of_myprog ; compress myprog Rather, it would be nice to be able to write something like zcat myprog.Z | execute_stdin params_of_myprog or `zcat myprog.Z` params_of_myprog or ??? Any ideas? Thanks in advance -- Georg Wittig GMD-Z1.IT | wittig@gmdzi.gmd.de | "Freedom's just another word P.O. Box 1240 | wittig@zi.gmd.dbp.de | for nothing left to lose" D-5205 St. Augustin 1 | | (Kris Kristofferson) West Germany | (+49) 2241 14-2294 |
guy@auspex.auspex.com (Guy Harris) (09/16/90)
>Is it possible (in sh or in csh) to execute a program that is read from >stdin? It's possible, although the ways you can do it depend on whether the "program" is an executable image or a script. If it's a script, you can try piping it to the interpreter (shell or whatever). If it's an executable image, in most UNIXes you must either put it into a file, or construct some program that reads its standard input and sets up its address space to contain the executable image it's reading and then jumps to it.
jms@romana.Tymnet.COM (Joe Smith) (09/27/90)
In article <3335@gmdzi.gmd.de> wittig@gmdzi.gmd.de (Georg Wittig) writes: >Is it possible (in sh or in csh) to execute a program that is read from stdin? Yes, use the "-s" option to sh. For example: (echo 'ls -l $1'; echo 'wc $1') | sh -s /etc/motd As simple as that. -- Joe Smith (408)922-6220 | SMTP: jms@tardis.tymnet.com or jms@gemini.tymnet.com BT Tymnet Tech Services | UUCP: ...!{ames,pyramid}!oliveb!tymix!tardis!jms PO Box 49019, MS-C41 | BIX: smithjoe | 12 PDP-10s still running! "POPJ P," San Jose, CA 95161-9019 | humorous dislaimer: "My Amiga 3000 speaks for me."