![]() In its simplest form, when no regular expression type is given, grep. GNU grep supports three regular expression syntaxes, Basic, Extended, and Perl-compatible. A pattern consists of operators, constructs literal characters, and meta-characters, which have special meaning. This requires tail -f to flush its standard output without delay even when its standard output is a pipe, I don't know if all implementations do this. A regular expression or regex is a pattern that matches a set of strings. For example, call multitail -cS amir_log /path/to/log with the following ~/.multitailrc: colorscheme:amir_logĪnother solution, if you're on a server where it's inconvenient to install non- standard tools, is to combine tail -f with sed or awk to add color selection control sequences. If the default color scheme doesn't work for you, write your own in the config file. ![]() You can watch multiple files in separate windows, highlight lines based on their content, and more. Information download - PowerGREP 4.5. This is an übergeneralization of tail -f.
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