mv/cp: will not overwrite just-created with
執行shell指令碼時,mv/cp時出現如下提示:
mv: will not overwrite just-created <filename> with <sameFilename>
cp: will not overwrite just-created <filename> with <sameFilename>
這種現象發生的原因是:移動或複製兩個或多個檔名相同的檔案到同一個目錄下。 這隻會mv/cp第一個遇到的檔案,拒絕mv/cp第二個同名檔案(這會覆蓋另一個檔案,從而有丟失使用者資料的風險)。
> mkdir a b c > touch a/file > touch b/file > mv a/file b/file c/ mv: will not overwrite just-created `c/file' with `b/file'
執行上述命令,a/file成功移動到c中,而b/file沒有被移動。
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