shell-find錯誤解析

shell-find錯誤解析

之前寫過一篇文章，用shell定時清除到期檔案《shell定時清除到期檔案》，其實用的就是簡單的find命令

後面同事採用之後，他調試指令碼的時候，出現了幾個錯誤，我做了整理：

1.find: paths must precede expression: exec

運算式不完整，在exec之前加一個執行符號“-”,就好了

2.find: missing argument to `-exec'

根據提示，錯誤的參數-exec,其實是提示你運算式錯誤了

原本語句是這樣的“find /var/log/*.log -mtime +30 -exec rm -f {}\;”

解決辦法：在\前面加一個空格，特別注意

解決思路，先去man find找，剛好有find . -type f -exec file '{}' \;

這個解釋夠清楚了：Runs ‘file’ on every file in or below the current directory. Notice that the braces are enclosed in single quote marks to protect them from interpretation as shell script punctuation. The semicolon is similarly protected by the use of a backslash, though single quotes could have been used in that case also.

--未完待續