I know that pushd/popd are built into csh, but I'm trying to run a set of 3rd party make files that use sh.
My problem is that sh simply squawks that pushd and popd are not found, then the make dies due to the error.
I've searched the entire system, and they are indeed missing. Evidently SGI... (3 Replies)
This question is related to pushd and popd. After I have pushed directories, I would like to see what are the contents of the stack currently before I execut e popd. The reason is that many a times we forget (or can get confused when multiple shells are open) what we pushed and would like to first... (4 Replies)
Hi All,
im using pushd and popd as below , but im getting different results, it is not consistent.
pushd <DIR>
pkzip <ZIP FILE NAME> *
popd
echo " Hi"
it is going into the DIR as expected and while zipping it, in between it got suspended by itself and executed the remaining step... (1 Reply)
I'm looking at a script for a pushd function in my bash book:
DIRSTACK=""
export DIRSTACK
pushd ()
{
dirname=$1
DIRSTACK="$dirname ${DIRSTACK:-$PWD' '}"
cd ${dirname:?"missing directory name."}
echo "$DIRSTACK"
}
Wanted to ask if someone could explain what's... (0 Replies)
I'm learning about pushd and popd, and the section in my book defines them as functions to put in the .profile file, but I've noticed that the commands obviously already exist. I was wondering -- how do I find out where these commands are? Is there some kind other command/series of commands I can... (11 Replies)
I am trying to get a listing of ALL directories only under /export (as an example). I can get all the dirs directly under /export but I need any sub dirs under those dirs. I've looked (here and google) but can not find anything that works (4 Replies)
Hi all,
My need is :
1. To know who , when , which command used.
2. Local user should not delete this information.
I mean , with an example , i can say
i have a user user1
i need to give all the following permissions to user1, :
a. A specific directory other than his home... (3 Replies)
Howdy,
I'm working through the book LEARN PYTHON THE HARD WAY, Appendix: Command Line Crash Course.
I got to wondering if pushd and popd are really ever used all that much?
Thank you for your insights,
DN (4 Replies)
Discussion started by: danuke
4 Replies
LEARN ABOUT ULTRIX
ppmtosixel
ppmtosixel(1) General Commands Manual ppmtosixel(1)NAME
ppmtosixel - convert a portable pixmap into DEC sixel format
SYNOPSIS
ppmtosixel [-raw] [-margin] [ppmfile]
DESCRIPTION
Reads a portable pixmap as input. Produces sixel commands (SIX) as output. The output is formatted for color printing, e.g. for a DEC
LJ250 color inkjet printer.
If RGB values from the PPM file do not have maxval=100, the RGB values are rescaled. A printer control header and a color assignment table
begin the SIX file. Image data is written in a compressed format by default. A printer control footer ends the image file.
OPTIONS -raw If specified, each pixel will be explicitly described in the image file. If -raw is not specified, output will default to com-
pressed format in which identical adjacent pixels are replaced by "repeat pixel" commands. A raw file is often an order of magni-
tude larger than a compressed file and prints much slower.
-margin
If -margin is not specified, the image will be start at the left margin (of the window, paper, or whatever). If -margin is speci-
fied, a 1.5 inch left margin will offset the image.
PRINTING
Generally, sixel files must reach the printer unfiltered. Use the lpr -x option or cat filename > /dev/tty0?.
BUGS
Upon rescaling, truncation of the least significant bits of RGB values may result in poor color conversion. If the original PPM maxval was
greater than 100, rescaling also reduces the image depth. While the actual RGB values from the ppm file are more or less retained, the
color palette of the LJ250 may not match the colors on your screen. This seems to be a printer limitation.
SEE ALSO ppm(5)AUTHOR
Copyright (C) 1991 by Rick Vinci.
26 April 1991 ppmtosixel(1)