It just give following message: gawk: warning: escape sequence `\'' treated as plain `&#

It just give following message: gawk: warning: escape sequence `\'' treated as plain `''

Different shell, different awk version, different result.
ksh, bash, which one is on your Linux server?

Please have a look at the thread below:
http://bbs.chinaunix.net/thread-1554332-1-1.html

Enclosing characters in double quotes preserves the literal value of all characters within the quotes, with the exception of $, `, \, and, when history expansion is enabled, !. The characters $ and ` retain their special meaning within double quotes. The backslash retains its special meaning only when followed by one of the following characters: $, `, ", \, or . A double quote may be quoted within double quotes by preceding it with a backslash. If enabled, history expansion will be performed unless an ! appearing in double quotes is escaped using a backslash. The backslash preceding the ! is not removed.追问Thanks for your answer. Currently we use ksh, and use gawk

这是什么东西我不知道