move rwbuffer to new cprogs directory

[chiark-utils.git] / backup / readbuffer.1

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-.TH readbuffer 1 2001-10-21 chiark-backup
-.SH NAME
-readbuffer \- read input from devices which don't like constant stopping and starting
-.SH SYNOPSIS
-.B readbuffer
-.RB [ --mlock ]
-.RI [ size ]
-.SH DESCRIPTION
-.B readbuffer
-reads data on standard input and writes it to standard output.  It
-will internally buffer up to \fIsize\fR megabytes of data, and will
-only read more data when the buffer is at least 75% empty.
-.PP
-It is intended for use in situations where many small
-reads are undesirable for performance reasons, e.g. tape drives.
-.SH OPTIONS
-.TP
-.B --mlock
-Calls
-.BR mlock (2)
-to lock the buffer into memory.
-.SH "SEE ALSO"
-.BR writebuffer (1),
-.BR mlock (2)