如何在UNIX中合并和删除文件? [英] How to merge and delete the files in unix?

问题描述

我想在bash中将多个文件合并为单个文件.所以我使用代码，

i would like to merge multiple files into single file in bash. so i use the code,

cat file1 file2 file3 file4 >>输出

cat file1 file2 file3 file4 >> output

但是由于我的计算机内存不足，所以无法创建合并文件.相反，您是否知道一旦将数据添加到输出文件中后如何同时删除file1 file2 file3?

But because my computer has low memory i am not able to create the merged file. instead do you know how to simultaneously remove file1 file2 file3 once the data has been added to output file?

推荐答案

for i in file1 file2 file3 file4 ; do cat "$i" >> output && rm "$i" || break ; done

因此，对于每个文件，它将把内容附加到 output 并在附加后删除源文件.如果有任何问题，它将停止.

So for each file, it will append the contents to output and remove the source file once appended. If anything goes wrong, it stops.

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