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 / 結束不換行
-e enable interpretation of backslash escapes /允許使用跳脫字元(\)
-E disable interpretation of backslash escapes (default) / 不允許使用跳脫字元(default)
--help display this help and exit
--version
output version information and exit
If -e is in effect, the following sequences are recognized:
\\ backslash / 反斜線
\a alert (BEL) / 嗶嗶聲
\b backspace / Backspace
\c produce no further output / 從此行開始不輸出
\e escape / 此字元以後不輸出
\f form feed /換頁 (我實在不知到要怎麼翻 ...)
\n new line / 跳行
\r carriage return / 刪除該行 /r 前全部
\t horizontal tab /水平定位點
\v vertical tab / 垂直定位點
\0NNN byte with octal value NNN (1 to 3 digits) / 以10進位印出 ascii 字元 ex /0100 會印出@
\xHH byte with hexadecimal value HH (1 to 2 digits) / 以16進位印出 ascii 字元 ex /40 會印出@ (可man ascii)
NOTE: your shell may have its own version of echo, which usually supersedes the version
described here. Please refer to your shell’s documentation for details about the options
it supports.
AUTHOR
Written by Brian Fox and Chet Ramey.
REPORTING BUGS
Report echo bugs to [email protected]
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 © 2010 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'