01-15-2008
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10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hi.. Does anybody knows how can I split a file in N documents?? I have a document of more than 80,000 lines (it is generated in a dynamic way, sometimes has 80,000 others 30,000 , or 1000,000) Im trying tyo break this file in only 1 lines of commands but I want to break it in a N differents files... (2 Replies)
Discussion started by: gtapia
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2. UNIX for Dummies Questions & Answers
I understand that a Here Document will redirect all of the lines between the beginning marker for the here document and the ending marker into the command specified just as if the text were coming from standard input.
I am trying to understand the Here Document with this example:
# Menu file... (3 Replies)
Discussion started by: ericelysia
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3. Shell Programming and Scripting
Hello,
I want to know the use of the here document with the << operator.
Tried to go through some books but the concept was not clear.
Please can any1 expalin me this with a simple example.
Thanks,
Rahul. (6 Replies)
Discussion started by: rahulrathod
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4. Shell Programming and Scripting
Hi :)
how can I use here doc to use ssh?
I am facing a problem with the below script:
#!/bin/bash
ssh hosein@localhost << *
123456
*
"123456" is my password
Thanks (2 Replies)
Discussion started by: htabesh
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5. Shell Programming and Scripting
Plz can somebody give me the shell and perl scripting documents,i need to start the scrpts learning.now i know about the linux commands,but need help in putting the same in the scripting with do,if,while and also using diffrent commands in the scrpipts,pls help.. (3 Replies)
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6. Shell Programming and Scripting
Here is my problem: can we set the variables in the HERE DOCUMENT? I have tried but failed. Any one has good comments please let me know.
#!/bin/csh -f
pbrun -u xmgbrk runshell <<!
@ $num1 = `wc -l /home/tpltp/csh/scripts/who.csh`
echo "$num1"
if ( $num1 > 0 ) then
echo $num1 | tee -a... (1 Reply)
Discussion started by: tpltp
1 Replies
7. Shell Programming and Scripting
Can we use a here document inside a here document?
Something like this
ssh user@remotehost << REMOTE
sudo vserver vsernamename enter << VSERVER
perform actions on vserver.
VSERVER
REMOTE (6 Replies)
Discussion started by: mnanavati
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8. Shell Programming and Scripting
Have a sudo statement inside of a here document. It prompts me for a password, but doesnt wait for me to enter my password. Is there a way I can use the command without sudo or anyway that I can enter the password correctly?
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while read remotehost
do
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Discussion started by: mnanavati
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9. Shell Programming and Scripting
I have code like
var="1"
echo << EOF
export `var="2"`
EOF
echo $var
The value of var is printed here is 1 but it should be 2
Any error there?
---------- Post updated at 11:44 AM ---------- Previous update was at 10:33 AM ----------
Also tried
var="1"
echo var << EOF
echo... (1 Reply)
Discussion started by: adisky123
1 Replies
10. UNIX for Beginners Questions & Answers
H Forum,
I was thankful in getting help from this post that allowed me to connect to multiple severs at once using here documents to gather data into variables. But I've discovered that the same bash command that works on my RHEL 7 servers do not work on RHEL 6? What's strange about my... (4 Replies)
Discussion started by: greavette
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LEARN ABOUT V7
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)