1 files changed, 52 insertions, 0 deletions
diff --git a/src/os.c b/src/os.c
new file mode 100644
index 0000000..4662acd
--- /dev/null
+++ b/src/os.c
@@ -0,0 +1,52 @@
+#include "os.h"
+
+#include <stdio.h>
+#include <string.h>
+
+void display_os_name() {
+  char buf[64];
+  FILE *p = popen("uname -s", "r");
+  if (!p) {
+    fprintf(stderr, "「uname」コマンドを実効に失敗");
+    return;
+  }
+
+  while (fgets(buf, sizeof(buf), p) != NULL) {
+    buf[strcspn(buf, "\n")] = '\0';
+    printf("%s", buf);
+  }
+
+  pclose(p);
+}
+
+void display_os_vers() {
+  char buf[16];
+  FILE *p = popen("uname -r", "r");
+  if (!p) {
+    fprintf(stderr, "「uname」コマンドを実効に失敗");
+    return;
+  }
+
+  while (fgets(buf, sizeof(buf), p) != NULL) {
+    buf[strcspn(buf, "\n")] = '\0';
+    printf("%s", buf);
+  }
+
+  pclose(p);
+}
+
+void display_os_arch() {
+  char buf[16];
+  FILE *p = popen("uname -m", "r");
+  if (!p) {
+    fprintf(stderr, "「uname」コマンドを実効に失敗");
+    return;
+  }
+
+  while (fgets(buf, sizeof(buf), p) != NULL) {
+    buf[strcspn(buf, "\n")] = '\0';
+    printf("%s", buf);
+  }
+
+  pclose(p);
+}