我从来没有设法使“\t”元字符与grep一起工作。 然而，我发现了两个替代方案:

使用<Ctrl-V> <TAB>(按Ctrl-V然后输入TAB) 使用awk: foo | awk '/\t/'

+1方式，工作在ksh，破折号等:使用printf插入制表符:

grep "$(printf 'BEGIN\tEND')" testfile.txt

这对于AIX很有效。我正在搜索包含连接<\t>ACTIVE的行

voradmin cluster status | grep  JOINED$'\t'ACTIVE

 vorudb201   1       MEMBER(g) JOINED        ACTIVE
*vorucaf01   2       SECONDARY JOINED        ACTIVE

基本上有两种解决方法:

(Recommended) Use regular expression syntax supported by grep(1). Modern grep(1) supports two forms of POSIX 1003.2 regex syntax: basic (obsolete) REs, and modern REs. Syntax is described in details on re_format(7) and regex(7) man pages which are part of BSD and Linux systems respectively. The GNU grep(1) also supports Perl-compatible REs as provided by the pcre(3) library. In regex language the tab symbol is usually encoded by \t atom. The atom is supported by BSD extended regular expressions (egrep, grep -E on BSD compatible system), as well as Perl-compatible REs (pcregrep, GNU grep -P). Both basic regular expressions and Linux extended REs apparently have no support for the \t. Please consult UNIX utility man page to know which regex language it supports (hence the difference between sed(1), awk(1), and pcregrep(1) regular expressions). Therefore, on Linux: $ grep -P '\t' FILE ... On BSD alike system: $ egrep '\t' FILE ... $ grep -E '\t' FILE ... Pass the tab character into pattern. This is straightforward when you edit a script file: # no tabs for Python please! grep -q ' ' *.py && exit 1 However, when working in an interactive shell you may need to rely on shell and terminal capabilities to type the proper symbol into the line. On most terminals this can be done through Ctrl+V key combination which instructs terminal to treat the next input character literally (the V is for "verbatim"): $ grep '<Ctrl>+<V><TAB>' FILE ... Some shells may offer advanced support for command typesetting. Such, in bash(1) words of the form $'string' are treated specially: bash$ grep $'\t' FILE ... Please note though, while being nice in a command line this may produce compatibility issues when the script will be moved to another platform. Also, be careful with quotes when using the specials, please consult bash(1) for details. For Bourne shell (and not only) the same behaviour may be emulated using command substitution augmented by printf(1) to construct proper regex: $ grep "`printf '\t'`" FILE ...

答案更简单。编写grep并在引号中输入tab键，它至少在ksh中工作得很好

grep "  " *

grep "$(printf '\t')"在Mac OS X上为我工作