1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
|
The dync utility is a small, but quite useful utility, which allows
the use of C as a scripting language. This can be quite useful
****SOMETIMES****, allowing access to system calls and library functions
from the command line. For example, there are occasions when I want
to see the struct stat for a directory entry, and want to be able to
access st_mtime values, without having to parse output from "ls -l".
A simple:
int main(int argc, char **argv)
{
struct stat st;
if (stat(argv[1], &st) == 0) {
printf("%lld\n", st.st_mtime);
}
exit(0);
}
will do the job. If I was to try this by other means, I would either
have to install all of Perl, and then learn its idiosyncratic syntax,
or write a custom C program, which I would then have to compile on
each architecture I need.
This utility relies on there being a C compiler on the target machine,
and a working dlopen(3).
|
