On 12/29/2010 11:52 AM, David Kramer wrote: > Is there a linux tool that can work as a pipe (read stdin, write to stdout) > and colorize any text > matching an regex? If not, I'll have to write one. Not that hard, but I > would hate to reinvent > it. While I'm not specifically answering this, I do want to comment on terminology. First, a PIPE is a channel that can connect 2 ports. In this case, the output of 1 program to the input of another program. A Unix program that reads from stdin and outputs to stdout (most Unix commands) is called a FILTER when used in this context. For instance, the pr(1) command is almost always used in this context. As also mentioned, grep(1) is also a filter, and many times it is: cat foo | grep <pattern> | grep -v <excluded stuff> This is kind of an example of using grep as a filter.
I don't think that grep is the answer, but sed(1) is another command that can alter a line of text based upon regular expressions. I don't know exactly what you mean by colorize, but you certainly can take one or more patterns(regex) and convert them to whatever you want. -- Jerry Feldman <g...@blu.org> Boston Linux and Unix PGP key id: 537C5846 PGP Key fingerprint: 3D1B 8377 A3C0 A5F2 ECBB CA3B 4607 4319 537C 5846
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