From ab03cf6d05b7c475e5351eadb0ca34b58161ca99 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=8C=85=E4=BA=A6=E6=99=9F?= <10215501451@stu.ecnu.edu.cn>
Date: Sun, 11 Sep 2022 17:12:28 +0800
Subject: [PATCH] =?UTF-8?q?=E4=B8=8A=E4=BC=A0=E6=96=87=E4=BB=B6=E8=87=B3?=
 =?UTF-8?q?=20''?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 10215501451.md | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)
 create mode 100644 10215501451.md

diff --git a/10215501451.md b/10215501451.md
new file mode 100644
index 0000000..104f684
--- /dev/null
+++ b/10215501451.md
@@ -0,0 +1,21 @@
+touch text1.txt
+
+for i in `seq 50000`;do echo $RANDOM | md5sum | cut -c 1-9 ;done >> text1.txt
+
+export LC_ALL=C
+
+sort text1.txt  | uniq
+
+sort -n text1.txt | uniq
+
+sort text1.txt  | uniq > letter.txt
+
+sort -n text1.txt | uniq >> number.txt
+
+
+
+echo -e "computer\ndata\nscience\nengineering\nscience\nengineeringc\ncomputer\ncomputer\necnu\ndata" > text2.txt
+
+grep computer text2.txt
+
+grep -c computer text2.txt
\ No newline at end of file