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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 09:36:25 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 09:36:25 +0000
commit6077d258b500b20e1e705f5cda567400240c7804 (patch)
treea5d41c050bd69f91476994b0d30c0a8f1e7957b5 /scripts/annotate-output.1
parentInitial commit. (diff)
downloaddevscripts-upstream.tar.xz
devscripts-upstream.zip
Adding upstream version 2.21.3+deb11u1.upstream/2.21.3+deb11u1upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
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+.TH ANNOTATE-OUTPUT 1 "Debian Utilities" "DEBIAN" \" -*- nroff -*-
+.SH NAME
+annotate-output \- annotate program output with time and stream
+.SH SYNOPSIS
+\fBannotate\-output\fR [\fIoptions\fR] \fIprogram\fR [\fIargs\fR ...]
+.SH DESCRIPTION
+\fBannotate\-output\fR will execute the specified program, while
+prepending every line with the current time and O for stdout and E for
+stderr.
+
+.SH OPTIONS
+.TP
+\fB+FORMAT\fR
+Controls the timestamp format, as per \fBdate\fR(1). Defaults to
+"%H:%M:%S".
+.TP
+\fB\-h\fR, \fB\-\-help\fR
+Display a help message and exit successfully.
+
+.SH EXAMPLE
+
+.nf
+$ annotate-output make
+21:41:21 I: Started make
+21:41:21 O: gcc \-Wall program.c
+21:43:18 E: program.c: Couldn't compile, and took me ages to find out
+21:43:19 E: collect2: ld returned 1 exit status
+21:43:19 E: make: *** [all] Error 1
+21:43:19 I: Finished with exitcode 2
+.fi
+
+.SH BUGS
+Since stdout and stderr are processed in parallel, it can happen that
+some lines received on stdout will show up before later-printed stderr
+lines (and vice-versa).
+
+This is unfortunately very hard to fix with the current annotation
+strategy. A fix would involve switching to PTRACE'ing the process.
+Giving nice a (much) higher priority over the executed program could
+however cause this behaviour to show up less frequently.
+
+The program does not work as well when the output is not linewise. In
+particular, when an interactive program asks for input, the question
+might not be shown until after you have answered it. This will give
+the impression that the annotated program has hung, while it has not.
+
+.SH "SEE ALSO"
+\fBdate\fR(1)
+
+.SH SUPPORT
+This program is community-supported (meaning: you'll need to fix it
+yourself). Patches are however appreciated, as is any feedback
+(positive or negative).
+
+.SH AUTHOR
+\fBannotate-output\fR was written by Jeroen van Wolffelaar
+<jeroen@wolffelaar.nl>. This manpage comes under the same copyright as
+annotate-output itself, read /usr/bin/annotate-output (or wherever
+you install it) for the details.