读书笔记之101个脚本之No.8

这是第8/101个脚本

The Code

There are as many ways to solve this quirky echo problem as there are pages in this book. One of my favorites is very succinct:

function echon

{

  echo "$*" | awk ''{ printf "%s" $0 }''

}

You may prefer to avoid the overhead incurred when calling the awk command, however, and if you have a user-level command called printf you can use it instead:

echon()

{

  printf "%s" "$*"

}

But what if you don''t have printf and you don''t want to call awk? Then use the tr command:

echon()

{

  echo "$*" | tr -d ''n''

}

This method of simply chopping out the carriage return with tr is a simple and efficient solution that should be quite portable.

这个脚本很简单,就是可以用3种不同的函数（方法）来实现,输出后不换行.

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