initial work

src/shell.c

@@ -0,0 +1,17 @@
+#include "fastfetch.h"
+
+#include <string.h>
+
+void ffPrintShell(FFstate* state)
+{
+    char* shellPath = getenv("SHELL");
+    char* shellName = strrchr(shellPath, '/');
+
+    if(shellName == NULL)
+        shellName = shellPath;
+    else if(shellName[0] == '/')
+        ++shellName;
+
+    ffPrintLogoAndKey(state, "Shell");
+    printf("%s\n", shellName);
+}