小编use*_*073的帖子

我必须编写一个小的bash脚本来确定字符串是否对bash变量命名规则有效.我的脚本接受变量名作为参数.我试图用我的正则表达式将该参数传递给grep命令,但我尝试了一切,grep尝试打开作为文件传递的值.

I tried placing it after the command as such
grep "$regex" "$1"

and also tried passing it as redirected input, both with and without quotes
grep "$regex" <"$1"

并且两次grep都试图将其作为文件打开.有没有办法将变量传递给grep命令？