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Length: 1949 (0x79d)
Types: TextFile
Notes: UNIX file
Names: »snarf.l«
└─⟦26887b7e0⟧ Bits:30009717 Comet 32 harddisk image
└─⟦28c352965⟧ »/a« UNIX Filesystem
└─⟦this⟧ »usr/man/catl/snarf.l«
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SNARF(8) UNIX Programmer's Manual SNARF(8)
NAME
snarf,barf - read and write raw image files
SYNOPSIS
snarf [-nn[a|b|c]] [file]
barf [-nn[a|b|c]] [file]
DESCRIPTION
These programs read and write graphics ram data. The
option _▶08◀n_▶08◀n gives the number of the image in the file
(default is 1). The letters _▶08◀a-_▶08◀c indicate pages of graph-
ics ram, so that _▶08◀a is the first 400 lines, _▶08◀b is the second
400 lines, and _▶08◀c is the first 800 lines (default is _▶08◀a). If
the double page _▶08◀c is specified, then the image numbers _▶08◀n_▶08◀n
usually would be given as 1, 3, 5, and so on.
Image files take a lot of disk space. Therefore a partic-
ularly suitable choice for the _▶08◀f_▶08◀i_▶08◀l_▶08◀e argument is the block
floppy device /_▶08◀d_▶08◀e_▶08◀v/_▶08◀f_▶08◀l_▶08◀o_▶08◀p. Up to 6 single page images (num-
bered 1 to 6, 128kB each) can be stored on a diskette. If
_▶08◀f_▶08◀i_▶08◀l_▶08◀e is not given, standard input/output is assumed. Thus
_▶08◀b_▶08◀a_▶08◀r_▶08◀fing with no arguments and no IO re-direction has dis-
tinctly unpleasant effects.
EXAMPLES
snarf /dev/null ; clear the first page of ram
snarf -3 /dev/flop ; get 3rd image from the diskette
barf -5b imagfile ; put 2nd ram page in a file
The second example may well create a hole in the file,
occupying no physical space.
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