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printf不常见用法

Wednesday, April 25, 2012 7:13:39 AM

, 

$ printf '%+08d' 42
+0000042

$ printf '%*.*s' 8 4 hello
    hell

$ printf "%'.2f" 123456.789
123,456.79

$ printf '%b' 'hello\tworld'
hello   world

$ printf '%x' "'B"
42

$ printf '%2$s %1$s' world hello
hello world

xmlstarlet示例APT常用命令

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