Merge pull request '10215501449' (#16) from 10215501449/Computer-Systems-Labs:master into master

Reviewed-on: https://gitea.shuishan.net.cn/52265903006/Computer-Systems-Labs/pulls/16

lab1/10215501449.sh

@@ -0,0 +1,12 @@
+for ((i=1;i<=100;i++))
+>do echo $RANDOM  | md5sum | cut -c 1-40 >>test.txt
+>done
+
+sort test.txt | uniq -u
+sort -n test.txt | uniq -u
+
+sort -n test.txt > test2.txt
+sort test.txt > test3.txt
+
+grep -c cc test.txt //因为没有computer字符串所以用cc来代替
+grep -n cc test.txt