接下来仅使用基本的bash命令.原则是：
>生成随机顺序(数字)
>按此顺序订购所有文件
编码
#!/bin/bash
case "$#" in
0) echo "Usage: $0 files....." ; exit 1;;
esac
ORDER="./.rand.$$"
trap "rm -f $ORDER;exit" 1 2
count=$(grep -c '^' "$1")
let odcount=$(($count * 4))
paste -d" " $ORDER
#if your system has the "shuf" command you can replace the above 3 lines with a simple
#seq -w $count | shuf > $ORDER
for file in "$@"
do
paste -d' ' $ORDER $file | sort -k1n | cut -d' ' -f2- > "$file.rand"
done
echo "the order is in the file $ORDER" # remove this line
#rm -f $ORDER # and uncomment this
# if dont need preserve the order
paste -d " " *.rand #remove this line - it is only for showing test result
从输入文件中：
A B C
--------
a1 a2 a3
b1 b2 b3
c1 c2 c3
d1 d2 d3
e1 e2 e3
f1 f2 f3
g1 g2 g3
h1 h2 h3
i1 i2 i3
j1 j2 j3
将使用下一个示例内容制作A.rand B.rand C.rand
g1 g2 g3
e1 e2 e3
b1 b2 b3
c1 c2 c3
f1 f2 f3
j1 j2 j3
d1 d2 d3
h1 h2 h3
i1 i2 i3
a1 a2 a3
真实测试-用25k行生成50个文件
line="Consequatur qui et qui. Mollitia expedita aut excepturi modi. Enim nihil et laboriosam sit a tenetur."
for n in $(seq -w 50)
do
seq -f "$line %g" 25000 >file.$n
done
运行脚本
bash sorter.sh file.??
结果在我的笔记本上
real 1m13.404s
user 0m56.127s
sys 0m5.143s
)
)
