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MLOG(1) General Commands Manual MLOG(1)
NAME
mlog – merge log files by timestamp
SYNOPSIS
mlog [-f] [-s] [-u] [-n lines] [files ...]
DESCRIPTION
mlog reads lines from multiple log files and prints them in chronological
order. The lines in the files need to start with lexicographically
comparable timestamps. mlog prints the oldest line first, thus
preserving relative order.
mlog behaves like a combination of ‘sort -m’ and ‘tail -f’.
The options are as follows:
-f Follow the output files, output appended lines as file grows.
When the file is truncated or recreated, start from beginning.
With two -f flags, seek to the end of files on start and only
print fresh lines.
-n N Only print the last N lines of each file (default: all lines).
-s Strip a prefix generated by socklog(8) from each line, which have
a format like ‘facility.priority: timestamp’.
-u Only print unique lines. If other files contain the same line at
the current position, skip them.
EXIT STATUS
The mlog utility exits 0 on success, and >0 if an error occurs.
INTERNALS
On Linux, inotify(7) is used to detect file changes.
SEE ALSO
tail(1), sort(1), svlogd(8)
AUTHORS
Leah Neukirchen <leah@vuxu.org>
LICENSE
mlog is in the public domain.
To the extent possible under law, the creator of this work has waived all
copyright and related or neighboring rights to this work.
http://creativecommons.org/publicdomain/zero/1.0/
Void Linux January 14, 2024 Void Linux
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