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32 rivejä
626 B
32 rivejä
626 B
第一题
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随机生成50000行的文件
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for i in {1..50000}
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>do
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>echo $RANDOM | md5sum | cut -c 1-9 >> hw1.txt
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>done
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按数字排序 追加写的方式重定向
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sort -n hw1.txt -u >> 3.txt
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按数字排序 覆盖写的方式重定向
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sort -n hw1.txt -u > 4.txt
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按字母排序 追加写的方式重定向
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sort -f hw1.txt -u >> 5.txt
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按字母排序 覆盖写的方式重定向
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sort -f hw1.txt -u > 6.txt
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第二题
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随机生成一个文件
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for i in {1..500}
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> do
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> echo $RANDOM | md5sum | cut -c 1-9 >> hw2.txt
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> done
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查找指定字符串fe
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grep 'fe' hw2.txt
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统计字符串fe出现次数
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grep -o "fe" hw2.txt | wc -l
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