Hi,
I have a script as follows:
#!/bin/sh
nohup ./my_program >& /dev/null &
However, i get a "Generated or received a file descriptor number that is not valid" whenever I run it.
running the command up in prompt is ok though.
if i change the first line to #!/bin/csh
i get a then:... (4 Replies)
Hi all,
I'm trying to run this command in a script:
utenti_conn=`ssh $MYUSER@$MYTRAP01IP sudo cat /opt/accenture/trapwriter/data/TMDVOD\-1\-\`date \+\%Y\%m\%d\`\* /opt/accenture/trapwriter/data/TMDBTV\-1\-\`date \+\%Y\%m\%d\`\*|awk -F'|' '{print $7}'|sort |uniq|wc -l`
and in output I... (1 Reply)
Hi, Anyone can help
My solaris 8 system has the following
/dev/null , /dev/tty and /dev/console
All permission are lrwxrwxrwx
Can this be change to a non-world write ??
any impact ?? (12 Replies)
Hello,
I'm trying to send the error output of a 'cat' operation to /dev/null like this:
cat /dirA/dirB/temp*.log > /dirA/dirB/final.log 2>/dev/null
This works perfectly in a terminal, but not when placed in a script.
If there are no files matching temp*.log the script outputs an error... (7 Replies)
How are these two different? They both prevent output and error from being displayed. I don't see the use of the "&"
echo "hello" > /dev/null 2>&1
echo "hello" > /dev/null 2>1 (3 Replies)
I want to be able to get all the directories in a path into a variable array, BUT if there ARE NO directories I want the Variable to be NULL and not echo any error message!
If there ARE directories, this will get the list of the directories whose name begins with the string "20":... (6 Replies)
Hi Guru's,
I am trying to test the network speed or load by this command.
but getting error " Not Connected ". Could you guys please help.
ftp> put "|dd if=/dev/zero bs=8k count=1000000" /dev/null
Not connected.
Please use
code tags! (9 Replies)
I apologize if this question has been answered else where or is too elementary.
I ran across a KSH script (long unimportant story) that does this:
if ; then
CAS_SRC_LOG="/var/log/cas_src.log 2>&1"
else
CAS_SRC_LOG="/dev/null 2>&1"
fithen does this:
/usr/bin/echo "heartbeat:... (5 Replies)
Hello.
When I run a .ksh that contains the command below, and there is no file available in the source location the "FILE_NAME_*.CSV not found" error is still being displayed.
FILEN=$(ssh ${SOURCE_SERV} "cd ${SOURCE_LOCATION} ;ls ${FILES}") 2> /dev/null.
This is interfering with the rest... (4 Replies)
Hi All,
I am new to shell scripting. I have a requirement as part of my job to find out null/empty values in column 2 and column 3 from a CSV file and exit the further execution of script by displaying a simple error message.
I have developed a script to do this by reading various articles... (7 Replies)
Discussion started by: tpk
7 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)