将wc行附加到文件名 [英] Append wc lines to filename

问题描述

标题说明了一切.我已经设法做到这一点:

Title says it all. I've managed to get just the lines with this:

lines=$(wc file.txt | awk {'print $1'});

但是我可以使用辅助将其附加到文件名中.向我展示如何在当前目录中的所有.txt文件中循环显示的要点.

But I could use an assist appending this to the filename. Bonus points for showing me how to loop this over all the .txt files in the current directory.

推荐答案

find -name '*.txt' -execdir bash -c \
  'mv -v "$0" "${0%.txt}_$(wc -l < "$0").txt"' {} \;

其中

• 为每个(\;)匹配文件执行bash命令；
• {}替换为当前处理的文件名，并作为第一个参数($0)传递给脚本；
• ${0%.txt}从字符串的后面删除.txt的最短匹配项(请参见仅打印文件中的行数(请参阅对

• the bash command is executed for each (\;) matched file;
• {} is replaced by the currently processed filename and passed as the first argument ($0) to the script;
• ${0%.txt} deletes shortest match of .txt from back of the string (see the official Bash-scripting guide);
• wc -l < "$0" prints only the number of lines in the file (see answers to this question, for example)

示例输出:

'./file-a.txt' -> 'file-a_5.txt'
'./file with spaces.txt' -> 'file with spaces_8.txt'

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