系统通配符号说明:

利用通配符号匹配文件名称信息

* 模糊匹配所有内容 ddk dlk dor ==> d*

 

find /opt -name "*.txt"

ls -lh /opt/*.txt

{} 生成序列信息(生成一行序列)

生成连续序列

echo {1..10}

echo {01..10}

echo {01..005}

 

生成不连续序列

echo {1..10..2} 奇数序列

echo {2..10..2} 偶数序列

echo {ddd,xxx,www}

 

生成组合序列

echo {a..c}{01..03}

echo {01..03}{a..c}{A..C}

echo {A,B}{01,02}

echo A{01,02}

echo A{,02}

 

例子

cp /opt/test.txt /opt/test.txt.bak

echo test.txt{,bak}

echo test.txt{,.bak}

echo /opt/text.txt{,.bak}

cp /opt/text.txt{,.bak}