09-08-2008
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
what is the meaning of this
echo $description | wc -m` -ne "1" (0 Replies)
Discussion started by: debasis.mishra
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2. UNIX for Dummies Questions & Answers
Is there a way to get echo to make newlines without using any type of quotes? I've done a lot of searches and went into my Linux book to no avail. I'm trying to write five separate lines to a file. I can get echo to accept all five lines like this
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\this is line 2\ >... (6 Replies)
Discussion started by: Trekker182
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3. Shell Programming and Scripting
So in my shell i execute:
{ while true; do echo string; sleep 1; done } | read line This waits one second and returns.
But
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Discussion started by: ulidtko
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4. Shell Programming and Scripting
can someone tell me what does this code do?
echo !. (2 Replies)
Discussion started by: ryandegreat25
2 Replies
5. UNIX for Dummies Questions & Answers
Bit of a weird one i suppose, i want to use an echo inside an echo... For example...
i have a script that i want to use to take users input and create another script. Inside this script it creates it also needs to use echos...
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echo "echo "goodbye"" >$file
... (3 Replies)
Discussion started by: mokachoka
3 Replies
6. Shell Programming and Scripting
Hi Guys,
I need to print a value in the same line , But when we use the echo instead the loops (while), the value goes to the next line..
Can you help me in this..
Thanks For your help in advance. (6 Replies)
Discussion started by: mac4rfree
6 Replies
7. Shell Programming and Scripting
echo `echo ` doesn't echoes anything. And it's logic. But
echo `echo `echo ` ` does echoes "echo". What's the logic of it? the `echo `echo ` inside of the whole (first) echo, echoes nothing, so the first echo have to echo nothing but echoes "echo"
(too much echoing :P):o (2 Replies)
Discussion started by: hakermania
2 Replies
8. Shell Programming and Scripting
I came across and unexpected behavior with redirections in tcsh. I know, csh is not best for redirections, but I'd like to understand what is happening here.
I have following script (called out_to_streams.csh):
#!/bin/tcsh -f
echo Redirected to STDOUT > /dev/stdout
echo Redirected to... (2 Replies)
Discussion started by: marcink
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9. UNIX for Dummies Questions & Answers
Hello,
I'm working with ksh.
I was working with the echo command
That is
echo "Today is $date"
which would show for example
Toady is 7/12/12
which was fine
however, know I only recieve the first part of the echo without the date.
Today is
Could I have edited the echo... (9 Replies)
Discussion started by: JD_Sal
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10. UNIX for Dummies Questions & Answers
Hi guys,
Been messing around with shell programming for a couple of days and I found something that was pretty odd in the behavior of the echo command. Below is an example-:
When I type the following in my /home directory from my lxterminal in Debian-:
echo "`ls -l`"
I get the... (2 Replies)
Discussion started by: sreyan32
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LEARN ABOUT CENTOS
gvmap.sh
GVMAP.SH(1) General Commands Manual GVMAP.SH(1)
NAME
gvmap.sh - pipeline for running gvmap
SYNOPSIS
gvmap.sh [-vV?] [ options ] [ -o outfile ] [ files ]
DESCRIPTION
gvmap.sh takes as input a graph in DOT format, performs a layout, runs the output through gvmap and renders the output. At some point, it
is hoped to integrate all of these tasks into gvmap.
OPTIONS
The following options are supported:
-a k The integer k specifies the average number of artificial points added along the bounding box of the labels. Such artificial points
are added to avoid a country boundary cutting through the boundary box of the labels. Computing time is proportional to k; hence,
for large graphs, a small value of k is suggested. If k = -1, a suitable value of k is automatically selected based on the graph
size. By default k = -1.
-K layout
specifies which program should be use for the initial layout. By default, sfdp is run. Also by default, the layout is passed the
flag -Goverlap=prism. This can be overridden using a -g flag.
-T format
specifies the final output format. This works the same way as the -T flag for any Graphviz layout program.
-N attr=val
specifies the setting of a default node attribute during the rendering phase. This works the same way as the -N flag for any
Graphviz layout program.
-G attr=val
specifies the setting of a graph attribute during the rendering phase. This works the same way as the -G flag for any Graphviz lay-
out program.
-E attr=val
specifies the setting of a default edge attribute during the rendering phase. This works the same way as the -E flag for any
Graphviz layout program.
-n attr=val
specifies the setting of a default node attribute during the layout phase. This works the same way as the -N flag for any Graphviz
layout program.
-g attr=val
specifies the setting of a graph attribute during the layout phase. This works the same way as the -G flag for any Graphviz layout
program.
-e attr=val
specifies the setting of a default edge attribute during the layout phase. This works the same way as the -E flag for any Graphviz
layout program.
-A flag
specifies a flag to be passed to gvmap. For example, gvmap.sh -Ae -As3 causes gvmap -e -s3 to be run.
-v Set verbose mode.
-V Print version information and exit.
-? Print usage information and exit.
EXAMPLES
The following invocation creates a map with edges in semi-transparent light gray and nodes laid out using sfdp:
gvmap.sh -Ae -Ecolor=#55555522 -Tpng foo.gv > foo.png
It is equivalent to running the pipeline
sfdp -Goverlap=prism foo.gv | gvmap -e | neato -n2 -Ecolor=#55555522 -Tpng > foo.png
AUTHOR
Emden R. Gansner <erg@research.att.com>
SEE ALSO
gvmap(1), sfdp(1), neato(1), gvpr(1)
E. R. Gansner, Y. Hu, S. G. Kobourov, "GMap: Visualizing graphs and clusters as maps," Proc. Pacific Vis. 2010, pp. 201-208.
31 March 2011 GVMAP.SH(1)