sed命令删除换行符

要使用sed命令删除换行符，可以使用以下命令：
echo -e "hello\nworld" | sed ':label;N;s/\n//g;b label'
这个命令会将"hello"和"world"之间的换行符删除掉，输出结果为"helloworld"。这个命令使用了sed的替换命令s/\n//g，将换行符替换为空字符串。同时，使用了标签和跳转指令来实现循环处理，确保所有的换行符都被替换掉。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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