From 3ed7425efe5ad0bec184897c3eaee6c88d84554e Mon Sep 17 00:00:00 2001
From: heqnx <root@heqnx.com>
Date: Mon, 12 May 2025 20:20:51 +0300
Subject: added diff-to-file.sh

---
 diff-to-file.sh | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)
 create mode 100644 diff-to-file.sh

diff --git a/diff-to-file.sh b/diff-to-file.sh
new file mode 100644
index 0000000..077498a
--- /dev/null
+++ b/diff-to-file.sh
@@ -0,0 +1,17 @@
+#!/bin/bash
+
+if test "${#}" -ne 2; then
+    printf "%s\n" \
+        "compare two files and output the difference" \
+        "usage: $(basename $0) <file1> <file2>"
+    exit 1
+fi
+
+if ! command -v comm &>/dev/null; then
+    printf "%s\n" "comm not found"
+    exit 1
+fi
+
+output="${1}__not_in__${2}"
+comm -23 <(sort "${1}") <(sort "${2}") > "${output}"
+printf "%s\n" "results of what is in ${1} and not in ${2} in ${output}"
-- 
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