return smprintf("%f", (float)used / 1024 / 1024);
}
+/* custom shell command */
+char *
+run_command(const char* command)
+{
+ FILE *fp;
+ char buffer[64];
+
+ /* try to open the command output */
+ if (!(fp = popen(command, "r"))) {
+ fprintf(stderr, "Could not get command output for: %s.\n", command);
+ return smprintf("n/a");
+ }
+
+ /* get command output text, save it to buffer */
+ fgets(buffer, sizeof(buffer)-1, fp);
+
+ /* close it again */
+ pclose(fp);
+
+ /* add nullchar at the end */
+ buffer[strlen(buffer) - 1] = '\0';
+
+ /* return the output */
+ return smprintf("%s", buffer);
+}
+
/* temperature */
char *
temp(const char *file)