From 317f7bf35716f7059511f42f1f4aba7d47fcfd01 Mon Sep 17 00:00:00 2001
From: Tyler Murphy <tylerm@tylerm.dev>
Date: Mon, 1 May 2023 00:31:13 -0400
Subject: tee, whoami, wc

---
 src/commands/whoami.c | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)
 create mode 100644 src/commands/whoami.c

(limited to 'src/commands/whoami.c')

diff --git a/src/commands/whoami.c b/src/commands/whoami.c
new file mode 100644
index 0000000..efc9bcd
--- /dev/null
+++ b/src/commands/whoami.c
@@ -0,0 +1,24 @@
+#include "../command.h"
+
+#include <pwd.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+static void help() {
+    printf("Usage: whoami\n\n");
+    printf("Print the username associated with the current effective user id\n");
+    exit(EXIT_SUCCESS);
+}
+
+COMMAND(whoami) {
+    if (argc > 0 && streql("--help", argv[0])) help();
+
+    uid_t usr = getuid();
+    struct passwd* passwd = getpwuid(usr);
+    if (passwd == NULL) {
+        printf("\x1b[1;91myou do not exist.\n");
+    } else {
+        printf("%s\n", passwd->pw_name);
+    }
+    return EXIT_SUCCESS;
+}
-- 
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