Merge pull request '10215501415' (#9) from 10215501415/Computer-Systems-Labs:master into master

Reviewed-on: https://gitea.shuishan.net.cn/52265903006/Computer-Systems-Labs/pulls/9

lab1/10215501415.sh

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+#两个字符串文件均由python生成
+#按数字排序
+
+#覆盖写
+cat hw1.txt | sort | uniq -d > 1.txt
+cat hw1.txt | sort -n | uniq -d > 1.txt
+
+#追加写
+cat hw1.txt | sort | uniq -d >> 2.txt
+cat hw1.txt | sort -n | uniq -d >> 2.txt
+
+
+#找出指定字符串
+grep computer hw1-2.txt
+grep -c computer hw1-2.txt