hey everyone!
i have a Solaris 8 box with me, and i had been using my usb thrumbdrive on it all the time. one day, i was in a rush and i pulled out the thumbdrive without ejecting it or anything. and now i can't detect any thumbdrives at all. i had tried using another thumbdrive, but with no... (2 Replies)
the root shell has been changed in the file /etc/passwd, basically pointing to an incorrect directory. So now every time we login as 'su' I get the message
'su: no shell' so we can't login as superuser.
Is there an easy way to rectify this? please use step by step instructions/commands -
I... (4 Replies)
Hello,
first of all, I want to make myself clear about my language. I'm brazilian, so I ask you all to understand if i commit any mistake with the grammar.
Here is the problem.
Some days ago I needed to use a "sh" command in the Terminal (I use a Mac OSX 10.5.6) followed by a file... (0 Replies)
I've screwed something up in my sshd_config apparently, because I can't ssh with root anymore.
I had disabled root login for security reasons, but then my ssh credentials with full administrative privelges stopped working. So then I reenabled root login (and reset ssh), but root now isn't... (3 Replies)
Hello,
I have a big problem and no idea how to solve it.
I was looking up commands in /bin with 'man' as I found 'sh'.
In mistake I started the command.
Now after that I can not input the character 's' in shell anymore!
Even after restarting system the problem is still there.
Mysterious... (7 Replies)
Hi Folks,
My telnet access to the server is not available anymore. I have found that when I execute >telnet IP, the login prompt for username/password entry is not displayed. Cursor blinks in a empty line and I dont see the prompt to enter my username.
It hungs in this state and not possible... (1 Reply)
Nice eye catching title huh ;)
I got laid off along with 55000 others from HP worldwide have been expecting this for some time and now it's finally my turn. Most of the folks I know get laid off at around this age of 40+ so do take note.
Ideas that ran thru my head this last few weeks:... (16 Replies)
My current Fedora version is 27. Desktop environment is LXDE. I am trying to view files sitting on my smartphone (Sony Xperia XA ultra) but it doesn't work anymore. This used to work before. I cannot view image and mp3 files but text files and pdf files work fine. When I move the files to the local... (3 Replies)
Discussion started by: milhan
3 Replies
LEARN ABOUT DEBIAN
vinvert
vinvert(1Vi)vinvert(1Vi)NAME
vinvert - invert image pixel values
SYNOPSIS
vinvert [option ...] [infile] [outfile]
DESCRIPTION
vinvert inverts each input image to produce a corresponding output image. The operation is suitable for swapping black and white in a grey-
scale image.
Each output pixel is computed from the corresponding input pixel by
out-pixel = M - in-pixel
where M is the maximum value allowed by the pixel representation, or 1 in the case of float or double pixels. Input pixel values must lie
in the range [0,M].
Each output image has the same number of bands, rows and columns, and the same pixel representation, as the corresponding input image.
COMMAND LINE OPTIONS
vinvert accepts the following options:
-help Prints a message describing options.
-in infile Specifies a Vista data file containing the input images.
-out outfile Specifies where to write the output images as a Vista data file.
Input and output files can be specified on the command line or allowed to default to the standard input and output streams.
SEE ALSO vnegate(1Vi), vop(1Vi), VImage(3Vi), Vista(7Vi)AUTHOR
Art Pope <pope@cs.ubc.ca>
Vista Version 1.12 24 April 1993 vinvert(1Vi)