如何检查 find 命令是否没有找到任何东西? [英] How to check if find command didn't find anything?

问题描述

我知道可以将 for 循环与类似的 find 命令一起使用

I know that is possible to use for loop with find command like that

for i in `find $something`; do (...) done

但我想使用带有if"的查找命令.

but I want to use find command with "if".

我正在尝试为我的脚本删除的文件创建进度评论(以及稍后的日志文件).我需要检查是否

I am trying to create progress comments (and log files later) about removed files by my script. I need to check if

find /directory/whatever -name '*.tar.gz' -mtime +$DAYS

找到或没有.如果不是，我想说回显您没有超过 $DAYS 天的文件"或类似的东西；)

found something or not. If not I want to say echo 'You don't have files older than $DAYS days' or something like this ;)

如何在 shell 脚本中做到这一点?

How I can do that in shell script?

推荐答案

统计输出的行数，存入变量，然后测试:

Count the number of lines output and store it in a variable, then test it:

lines=$(find ... | wc -l)
if [ $lines -eq 0 ]; then
...
fi

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