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Escaped Tokens for Regex Syntax Egrep


The literal byte with octal value n..n.


The NULL byte.


The literal byte with decimal value [1-9]..x.

\xn..n or \0xn..n

The literal byte with hexadecimal value n..n.


Match the empty string at the beginning of a word.


Match the empty string at the end of a word.


Match the empty string at a word boundary.


Match the empty string provided it is not at a word boundary.


Match a word-constituent character, equivalent to [a:zA:Z0:9-].


Match a non-word-constituent character.


Literal alarm character.


Literal escape character.


Literal line feed.


Literal new line, equivalent to C's \n so it can be more than one character long.


Literal carriage return.


Literal tab.

All other escaped characters denote the literal character itself.


Highlights from the SSH.COM blog:

  • Cryptomining with the SSH protocol: what big enterprises need to know about it

    Cryptomining malware is primarily thought of as targeting desktops and laptops and is used to hijack system resources to mine cryptocurrency.
    Read more
  • SLAM the door shut on traditional privileged access management

    Did you know that something as trivial-sounding as granting access for your developers or third parties to a product development environment can throw a gorilla-sized monkey wrench into your operations and productivity?
    Read more
  • We broke the IT security perimeter

    Everyone understands the concept of a security perimeter. You only gain access if you are identified and authorized to do so.
    Read more