pnmflip(1) General Commands Manual pnmflip(1)NAME
pnmflip - perform one or more flip operations on a portable anymap
SYNOPSIS
pnmflip [-leftright|-lr] [-topbottom|-tb] [-transpose|-xy] [-rotate90|-r90|-ccw ] [-rotate270|-r270|-cw ] [-rotate180|-r180] [pnmfile]
DESCRIPTION
Reads a portable anymap as input. Performs one or more flip operations, in the order specified, and writes out a portable anymap.
OPTIONS
The flip operations available are: left for right (-leftright or -lr); top for bottom (-topbottom or -tb); and transposition (-transpose or
-xy). In addition, some canned concatenations are available: -rotate90 or -ccw is equivalent to -transpose -topbottom; -rotate270 or -cw
is equivalent to -transpose -leftright; and -rotate180 is equivalent to -leftright -topbottom.
All flags can be abbreviated to their shortest unique prefix.
SEE ALSO pnmrotate(1), pnm(5)AUTHOR
Copyright (C) 1989 by Jef Poskanzer.
25 July 1989 pnmflip(1)
Check Out this Related Man Page
pnmflip(1) General Commands Manual pnmflip(1)NAME
pnmflip - perform one or more flip operations on a portable anymap
SYNOPSIS
pnmflip [-leftright|-lr] [-topbottom|-tb] [-transpose|-xy] [-rotate90|-r90|-ccw ] [-rotate270|-r270|-cw ] [-rotate180|-r180] [pnmfile]
DESCRIPTION
Reads a portable anymap as input. Performs one or more flip operations, in the order specified, and writes out a portable anymap.
OPTIONS
The flip operations available are: left for right (-leftright or -lr); top for bottom (-topbottom or -tb); and transposition (-transpose or
-xy). In addition, some canned concatenations are available: -rotate90 or -ccw is equivalent to -transpose -topbottom; -rotate270 or -cw
is equivalent to -transpose -leftright; and -rotate180 is equivalent to -leftright -topbottom.
All flags can be abbreviated to their shortest unique prefix.
SEE ALSO pnmrotate(1), pnm(5)AUTHOR
Copyright (C) 1989 by Jef Poskanzer.
25 July 1989 pnmflip(1)
What is the point of this? Whenever I close my shell it appends to the history file without adding this. I have never seen it overwrite my history file.
# When the shell exits, append to the history file instead of overwriting it
shopt -s histappend (3 Replies)