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UNIX for Beginners Questions & Answers
Bash beginner
Post 303041595 by darklord173 on Thursday 28th of November 2019 12:00:52 PM
11-28-2019
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LEARN ABOUT PLAN9
btrace
BTRACE(8) System Manager's Manual BTRACE(8) NAME
btrace - trace bitblt protocol SYNOPSIS
btrace [ -d [ d ]] [ -o ofile ] [ -b bfile ] DESCRIPTION
Btrace eavesdrops on messages to and from /dev/bitblt, interprets them as messages in the bit device protocol (see bit(3)), and prints a readable version of the messages on a trace file, btrace.out by default. After btrace is started, it runs in the background, tracing all subsequent graphics programs run in that window. Options for btrace are: -o ofile Print trace output in ofile instead of btrace.out. -b bfile Dump each bitmap read or written to bfile, using the format of bitmap(6). Each succeeding bitmap overwrites the previous con- tents of file. Tweak(1) or showimage(7) can be used to examine the file. -d Increase the level of trace detail. The maximum level is -dd. FILES
/dev/bitblt SOURCE
/sys/src/cmd/btrace.c SEE ALSO
bit(3), bitmap(6), graphics(2), tweak(1), showimage(7) BTRACE(8)