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diff --git a/doc/peekfd.1 b/doc/peekfd.1 new file mode 100644 index 0000000..f14159f --- /dev/null +++ b/doc/peekfd.1 @@ -0,0 +1,64 @@ +.\" +.\" Copyright 2007 Trent Waddington <trent.waddington@gmail.com> +.\" +.\" This program is free software; you can redistribute it and/or modify +.\" it under the terms of the GNU General Public License as published by +.\" the Free Software Foundation; either version 2 of the License, or +.\" (at your option) any later version. +.\" +.TH PEEKFD 1 "2021-12-01" "psmisc" "User Commands" +.SH NAME +peekfd \- peek at file descriptors of running processes +.SH SYNOPSIS +.B peekfd +.RB [ \-8 , \-\-eight\-bit\-clean ] +.RB [ \-n , \-\-no\-headers ] +.RB [ \-c , \-\-follow ] +.RB [ \-d , \-\-duplicates\-removed ] +.RB [ \-V , \-\-version ] +.RB [ \-h , \-\-help ] +.I pid +.RI [ fd ] +.RI [ fd "] ..." +.SH DESCRIPTION +.B peekfd +attaches to a running process and intercepts all reads and writes to +file descriptors. You can specify the desired file descriptor numbers +or dump all of them. +.SH OPTIONS +.IP -8 +Do no post-processing on the bytes being read or written. +.IP -n +Do not display headers indicating the source of the bytes dumped. +.IP -c +Also dump the requested file descriptor activity in any new child +processes that are created. +.IP -d +Remove duplicate read/writes from the output. If you're looking at a +tty with echo, you might want this. +.IP -v +Display a version string. +.IP -h +Display a help message. +.SH FILES +.BI /proc/ * /fd +.RS +Not used but useful for the user to look at to get good file descriptor +numbers. +.SH ENVIRONMENT +None. +.SH DIAGNOSTICS +The following diagnostics may be issued on stderr: +.TP +.BI "Error attaching to pid " <PID> +An unknown error occurred while attempted to attach to a process, you +may need to be root. +.SH BUGS +Probably lots. Don't be surprised if the process you are monitoring +dies. +.SH AUTHOR +.MT trent.waddington@gmail.com +Trent Waddington +.ME +.SH "SEE ALSO" +.BR ttysnoop (8) |