2 basic questions
October 30, 2007 07:18 AM
2 basic questions:
1) is the a function in glibc to find out if a file is an executable ?
2) is it possible to store the gcc output (errors/warnings) in a file?
1,088
October 30, 2007 07:55 AM
Quote: Original post by attahollander
1) is the a function in glibc to find out if a file is an executable ?
To find out if a file (or directory) has execute permissions would be stat.
#include <sys/stat.h>#include <stdio.h>int main(void) { const char path[] = "/tmp/somefile"; struct stat buf; if(stat(path, &buf)) { printf("Error calling stat.\n"); return 1; } printf("%s is executable by:\n\tuser: %s\n\tgroup: %s\n\tothers: %s\n", path, (buf.st_mode & S_IXUSR) ? "yes" : "no", (buf.st_mode & S_IXGRP) ? "yes" : "no", (buf.st_mode & S_IXOTH) ? "yes" : "no"); return 0;}Quote: Original post by attahollander
2) is it possible to store the gcc output (errors/warnings) in a file?
It depends on your shell, but most support redirection of the form "command &> /tmp/outputfile". You can also redirect just errors with "command 2> /tmp/outputfile".
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