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。

      本文转自hb_fukua  51CTO博客，原文链接：http://blog.51cto.com/2804976/593422，如需转载请自行联系原作者