Post-Process Output of Program
postproc(1) is a small utility for flexibly post-processsing the
stdout and stderr outputs of shell commands. It applies one or more
post-processing rules to each line of output. Each rule can have zero or
more conditions and one or more actions. The conditions allow to match
the output line with the help of regular expressions or active tags. The
actions allow to change the output line with the help of replacement
strings, can add or delete active tags and can force the repeating or
stopping of the rules for the current line and can force the ignoring of
the current line.
$ npm install -g postproc
The Unix manual page contains detailed usage information.
# adds timestamp prefix
$ postproc -e ': "[%c(blue)%t(YYYY-MM-DD hh:mm:ss.SS)%c(reset)] $0"' \
npm install
# marks directories as blue
$ postproc -e '/^(d.+\s+)(\S+)$/ : "$1%c(blue)$2/%c(reset)"' \
ls -l
# complex state-based marking of subsequent line
# postproc -e '/complete log/ : #logfile break' \
-e '#logfile : "%c(bold)$0%c(reset)" !#logfile' \
npm install not-existing-module
Copyright © 2020-2022 Dr. Ralf S. Engelschall (http://engelschall.com/)
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