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  • Linux命令:echo 分类: Ubuntu学习笔记 2015-07-26 21:29 61人阅读 评论(0) 收藏

    NAME
           echo - display a line of text

    SYNOPSIS
           echo [SHORT-OPTION]... [STRING]...
           echo LONG-OPTION

    DESCRIPTION
           Echo the STRING(s) to standard output.

           -n     do not output the trailing newline

                  禁止自动在行尾输入换行符


           -e     enable interpretation of backslash escapes

                 使能特殊字符的处理


           -E     disable interpretation of backslash escapes (default)

                关闭特殊字符的处理,默认方式


           --help display this help and exit

           --version
                  output version information and exit

           If -e is in effect, the following sequences are recognized:

           若加入-e参数,以下命令会被识别


           \     backslash


        发出警告声

           a     alert (BEL)

         

        删除前一个字符

                backspace


        该符号后的字符不予输出,且不会自动换行
           c     produce no further output

           e     escape

           f     form feed

                new line

                carriage return

                horizontal tab

           v     vertical tab


         八进制表示的ASCII码

           NNN  byte with octal value NNN (1 to 3 digits)


        十六进制表示的ASCII码
           xHH   byte with hexadecimal value HH (1 to 2 digits)

           NOTE:  your shell may have its own version of echo, which usually supersedes the version described here.  Please refer to your shell's docu‐
           mentation for details about the options it supports.

    AUTHOR
           Written by Brian Fox and Chet Ramey.

    REPORTING BUGS
           Report echo bugs to bug-coreutils@gnu.org
           GNU coreutils home page: <http://www.gnu.org/software/coreutils/>
           General help using GNU software: <http://www.gnu.org/gethelp/>
           Report echo translation bugs to <http://translationproject.org/team/>

    COPYRIGHT
           Copyright © 2013 Free Software Foundation, Inc.  License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
           This is free software: you are free to change and redistribute it.  There is NO WARRANTY, to the extent permitted by law.

    SEE ALSO
           The full documentation for echo is maintained as a Texinfo manual.  If the info and echo programs are properly installed at your  site,  the
           command

                  info coreutils 'echo invocation'

           should give you access to the complete manual.

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  • 原文地址:https://www.cnblogs.com/zclzqbx/p/4687040.html
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