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Old 04-24-2004, 10:17 AM   #1
Registered: Mar 2004
Location: Denmark
Distribution: Gentoo
Posts: 68

Rep: Reputation: 16
redirect into C++ without a file ?

I am quite new to linux, but I have been thinking about doing some gui-programming for some commandline-programs that has no gui (and could use it).

This is not the case but if I wanted to make a grafical ls program I could write something like

system("ls > result.temp")
... read from result.temp
... show gui with result.tmp

But I don't want to create a (temporary) and read from it ...

I could also try something like
system("mycommand --output | ls")
but that would just create a new process and I need someway to signal the output into the old process. (?)

And all I want to do is the simple thing like
char buffer [large]; (or maybe string)
system ( ls > buffer )

Am I overlooking a very simple solution here ?
Hope somebody will/can help me.

Old 04-24-2004, 10:20 AM   #2
Registered: Mar 2004
Location: Upstate NY
Distribution: Slackware/YDL
Posts: 77

Rep: Reputation: 15
depends on what you need exactly but:
man pipe
man fifo

might be enlightening


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