character(s) followed by foo. or bar. followed by anything followed by is.a.server followed by anything匹配的正则表达式station not.a.server" # do NOT not match this, b'cos it don't match "is.a.server"
"foo.l is.a.server.linux" | grep "$match
刚才我正在寻找一个正则表达式,它可以检测没有用双引号括起来的字符串。我得到了在javascript中工作的令人难以置信的答案。我实际上正在尝试使用grep来运行它,但它不起作用。有人能帮我解释一下这个正则表达式为什么不工作吗我正在尝试运行:echo "quick" "brown" fox jumps "o