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Hello,

Why close my ask "How to implement a semaphore with pedestrian pushbutton" i'm autodidact, so i don't understand why you dedice close it.

I put the ask about Java (the language what...

Hello,

I need to implement a semaphore in linux c with the following conditions:

1. When there is no pedestrian crossing the street cars can move freely,but if there are any
pedestrians...

Hello,

I have this sentence that doesn't work:

if ['echo "$by_ln" | cut -d " " -f1,2 | wc -l' != 'echo "$by_ln" | cut -d " " -f1,2 | uniq | wc -l'];

But if I separate the statement on two...

Hello,

I'm trying to use export for non use "./" when I execute a program.

I mean "program" in place of "./program"

I tried this:

export doit=program

But doesn't work the answer...

Hello,

I need to do a function in ansi c for linux that work like command cp.I try with this but doesn't work:

int copy (char *src, char *dst)
{
ret = execlp("/bin/cp", "cp",...