根据包含数字和不包含数字的行对 CSV 中的行进行排序

Question

我有一个 4 列的 CSV 文件。我想对这些行进行排序，以便将第三列中某处包含任何数字的行推到文档的末尾，将第三列中没有数字的行放在开头。如何以这种方式对文件进行排序？

更新：

为了澄清，我需要在第三列的字母中移动包含任何数字（即匹配[0-9]）的行（该行的第三列可能包含其他符号）。空格并不重要。例如

dog, eats chicken, has 4 legs, does not like cats
cat, eats mice, has a tail, does not like water
mouse, eats bugs, has 4 legs, does not like cats
elephant, eats peanuts, has a trunk, does not like mice

将被排序到：

cat, eats mice, has a tail, does not like water
elephant, eats peanuts, has a trunk, does not like mice
dog, eats chicken, has 4 legs, does not like cats
mouse, eats bugs, has 4 legs, does not like cats

Answer 1

这将保持处理行的顺序以及不使用管道和外部命令。

awk -F, '
$3~/[0-9]+/{a[++i]=$0;x=i;next}1
END{for(i=1;i<=x;i++) print a[i]}' file

输入文件：

[jaypal:~/Temp] cat file
dog, eats chicken, has 4 legs, does not like cats
cat, eats mice, has a tail, does not like water
mouse, eats bugs, has 4 legs, does not like cats
elephant, eats peanuts, has a trunk, does not like mice

测试：

[jaypal:~/Temp] awk -F, '
$3~/[0-9]+/{a[++i]=$0;x=i;next}1
END{for(i=1;i<=x;i++) print a[i]}' file
cat, eats mice, has a tail, does not like water
elephant, eats peanuts, has a trunk, does not like mice
dog, eats chicken, has 4 legs, does not like cats
mouse, eats bugs, has 4 legs, does not like cats

Answer 2

这是 awk 中的一个简短的 1-liner，不需要调用其他实用程序，例如 sort

awk -F',' '$3 ~ /[[:digit:]]/{a[$0];next}1; END{for(i in a)print i}' ./infile

说明

• 如果第三个字段包含数字，则将当前行作为键存储在数组“a”中并处理下一行
• 如果所有行不符合上述规则，则按原样输出
• 处理完所有行后，输出我们存储在数组“a”中的行

输出

$ awk -F',' '$3 ~ /[[:digit:]]/{a[$0];next}1; END{for(i in a)print i}' ./infile
cat, eats mice, has a tail, does not like water
elephant, eats peanuts, has a trunk, does not like mice
mouse, eats bugs, has 4 legs, does not like cats
dog, eats chicken, has 4 legs, does not like cats

Answer 3

这样的事情应该可以工作：

awk 'BEGIN {FS=","; OFS=","}; {print match($3,/[0-9]/), $0}' <file> | sort | cut -d, -f2-

策略是

• 使用awk在每行的开头插入找到数字的索引（如果没有找到数字，则为0）
• 使用sort对所有行进行排序
• 最后，使用cut 删除awk 前面的数字。

Answer 4

这可能对你有用：

sed 'h;s/,/\n/2;s/.*\n/0/;s/,.*//;s/[^0-9]//g;G;s/\n/\t/' file | 
sort -k1,1n -k2 | 
cut -f2

解释：

• 使用第 3 列中的数字生成数字键（如果没有，则将键设置为 0）
• 按上述键排序，再按原文件排序
• 去掉数字键