Add unit tests

1 files changed, 6 insertions, 6 deletions

diff --git a/README.md b/README.md
index 28a1972..bbc7e94 100644
--- a/README.md
+++ b/README.md
@@ -1171,11 +1171,9 @@ Rootly Powers and Processes
     ```bash
     #!/bin/bash
 
-    if [[ "$OSTYPE" == "darwin"* ]]; then
-      cat /etc/passwd | cut -d: -f1,3 | grep ':0'
-    else
-      cat /etc/passwd | grep -P '^\w+:[x]:\d+:0.*$'
-    fi
+    FILE=${1:-'/etc/passwd'}
+
+    cat "$FILE" | cut -d: -f1,3 | grep ':0'
     ```
 
   b. Find entries that have no password (needs /etc/shadow).
@@ -1183,7 +1181,9 @@ Rootly Powers and Processes
     ```bash
     #!/bin/bash
 
-    grep -E '^\w+::.*' /etc/passwd
+    FILE=${1:-'/etc/passwd'}
+
+    grep -E '^\w+::.*' $FILE
     ```
 
   c. Find any sets of entries that have duplicate UIDs.