起動時間とCPU

1 files changed, 31 insertions, 0 deletions

diff --git a/src/uptime.c b/src/uptime.c
new file mode 100644
index 0000000..da19270
--- /dev/null
+++ b/src/uptime.c
@@ -0,0 +1,31 @@
+#include "memory.h"
+
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+
+void run_uptime_command(const char *command) {
+  char buf[128];
+
+  FILE *p = popen(command, "r");
+  if (!p) {
+    fprintf(stderr, "ホストコマンドを実効に失敗: %s", command);
+    return;
+  }
+
+  while (fgets(buf, sizeof(buf), p) != NULL) {
+    buf[strcspn(buf, "\n")] = '\0';
+    printf("%s", buf);
+  }
+
+  pclose(p);
+}
+
+void display_days() {
+  run_uptime_command("uptime | awk '{print $3}' && echo \" days\"");
+}
+
+void display_time() {
+  run_uptime_command("uptime | awk '{print $5}' | sed 's/,//' | "
+                     "sed 's/:/ hours, /' && echo \" mins\"");
+}