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a couple of articles migrated

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This commit is contained in:
Wolfgang Hottgenroth
2018-05-02 16:30:12 +02:00
parent db41f7b8ce
commit b5c6422601
41 changed files with 2323 additions and 1 deletions
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60
posts/2013-11-08.01/article.html Normal file
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<html>
<head>
<title>Projects - just for fun</title>
</head>
<body>
This small piece of code was used during the analysis of an 800GB VMWare image after a server crash.
notnull.c:
<pre>
#include &lt;stdio.h&gt;
#include &lt;stdlib.h&gt;
int main(int argc, const char* argv[]) {
if (argc != 2) {
printf(&quot;give filenamen&quot;);
exit(1);
}
FILE *f = fopen(argv[1], &quot;r&quot;);
const unsigned int BUFSIZE = 4096;
unsigned char buffer[BUFSIZE];
unsigned long cnt = 0;
unsigned long found = 0;
size_t r;
while (0 != (r = fread(&amp;buffer, 1, BUFSIZE, f))) {
cnt += r;
for (int i = 0; i &lt; r; i++) {
if (0 != *(buffer + i)) {
found++;
}
}
if (0 == (cnt % 1000000)) {
printf(&quot;cnt: %ld, found: %ldn&quot;, cnt, found);
}
}
printf(&quot;finally: cnt: %ld, found: %ldn&quot;, cnt, found);
}
</pre>
Compile it using:
<pre>
gcc -std=c99 -o notnull notnull.c
</pre>
</body>
</html>

47
posts/2013-11-08.01/article.m4 Normal file
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define(`TITLE', `Has this large file something else than zeros?')
define(`DATE', `2013-11-08')
define(`CONTENT', `
This small piece of code was used during the analysis of an 800GB VMWare image after a server crash.
notnull.c:
<pre>
#include &lt;stdio.h&gt;
#include &lt;stdlib.h&gt;
int main(int argc, const char* argv[]) {
if (argc != 2) {
printf(&quot;give filenamen&quot;);
exit(1);
}
FILE *f = fopen(argv[1], &quot;r&quot;);
const unsigned int BUFSIZE = 4096;
unsigned char buffer[BUFSIZE];
unsigned long cnt = 0;
unsigned long found = 0;
size_t r;
while (0 != (r = fread(&amp;buffer, 1, BUFSIZE, f))) {
cnt += r;
for (int i = 0; i &lt; r; i++) {
if (0 != *(buffer + i)) {
found++;
}
}
if (0 == (cnt % 1000000)) {
printf(&quot;cnt: %ld, found: %ldn&quot;, cnt, found);
}
}
printf(&quot;finally: cnt: %ld, found: %ldn&quot;, cnt, found);
}
</pre>
Compile it using:
<pre>
gcc -std=c99 -o notnull notnull.c
</pre>
')