timbass
Sat, 28 Jul 2007 10:07:53 +0000
Originally posted in Yahoo! CEP-Interest
Here is my follow-up note on posets (partially ordered sets) and tosets (totally or linearly ordered sets) as background set theory for event processing, and in particular CEP and ESP.
In my last note, we... (0 Replies)
Hello all and thanks in advance!
What I'm looking to do is insert a blank line, anytime the first 9 characters of a given line don't match the first 9 characters of the previous line.
i.e.
Convert the data set
1 45 64 89
1 89 69 235
2 89 234 67
2 56 90... (1 Reply)
Hello and thanks in advance.
I have a Sun box with raid 1 on the O/S disks using solaris svm.
I want to unmirror my swap partition, and add the slice on the second disk as an additional swap device. This would give me twice as much swap space.
I have been warned not to do this by some... (3 Replies)
Hi
I have an integrity machine rx7620 and rx8640 running hp-ux 11.31. I'm planning to fine tune the system:
- I would like to know when does the memory swap space spill over to the device swap space?
- And how much % of memory swap utilization should be specified (swap space device... (6 Replies)
Hi,
I have to swap two consecutive line using sed in a file.
My text to swap is available in the file x.pl
#Create & map a common work library
if (!(-e "../work"))
{
system ("vlib work ../work");
system ("vmap work ../work");
}
system ("vsimsa -do thiagu_dec.do");
In this i... (6 Replies)
This seems to be a question whose answer uses sed or awk.
For a file like:
a
b
c
d
e
How to swap the order of the line pairs, to end up with:
b
a
d
c
e
All lines from the original file need to wind up in the output file. (8 Replies)
Hi,
I think it is possible with sed, but I'm not sure...
I've a file that contains some text and filenames:
gtk-media-pause | CB60471-05 - Gilbert, Brantley - Country Must Be Country Wide.zip | 8175 | /home/floris/Muziek/Karaoke/1341838939/CB60471-05 - Gilbert, Brantley - Country Must Be... (2 Replies)
Hi all,
I have a vcd file with a bunch of lines containing an array, like this
$var wire 1 b a $end
$var wire 1 c a $end
$var wire 1 d a $end
$var wire 1 e a $end
$var wire 1 f b $end
$var wire 1 g b $end
$var wire 1 h b $end
$var wire 1 i b $end
I want it like this:
$var wire 1 e a... (12 Replies)
Hi Solaris Folks :),
I need to calculate the swap usage on solaris server, please let me understand the output of below swap -s and swap -l commands.
$swap -s
total: 1774912k bytes allocated + 240616k reserved = 2015528k used, 14542512k available
$swap -l
swapfile dev swaplo... (6 Replies)
Discussion started by: seenuvasan1985
6 Replies
LEARN ABOUT CENTOS
shell-quote
SHELL-QUOTE(1) User Contributed Perl Documentation SHELL-QUOTE(1)NAME
shell-quote - quote arguments for safe use, unmodified in a shell command
SYNOPSIS
shell-quote [switch]... arg...
DESCRIPTION
shell-quote lets you pass arbitrary strings through the shell so that they won't be changed by the shell. This lets you process commands
or files with embedded white space or shell globbing characters safely. Here are a few examples.
EXAMPLES
ssh preserving args
When running a remote command with ssh, ssh doesn't preserve the separate arguments it receives. It just joins them with spaces and
passes them to "$SHELL -c". This doesn't work as intended:
ssh host touch 'hi there' # fails
It creates 2 files, hi and there. Instead, do this:
cmd=`shell-quote touch 'hi there'`
ssh host "$cmd"
This gives you just 1 file, hi there.
process find output
It's not ordinarily possible to process an arbitrary list of files output by find with a shell script. Anything you put in $IFS to
split up the output could legitimately be in a file's name. Here's how you can do it using shell-quote:
eval set -- `find -type f -print0 | xargs -0 shell-quote --`
debug shell scripts
shell-quote is better than echo for debugging shell scripts.
debug() {
[ -z "$debug" ] || shell-quote "debug:" "$@"
}
With echo you can't tell the difference between "debug 'foo bar'" and "debug foo bar", but with shell-quote you can.
save a command for later
shell-quote can be used to build up a shell command to run later. Say you want the user to be able to give you switches for a command
you're going to run. If you don't want the switches to be re-evaluated by the shell (which is usually a good idea, else there are
things the user can't pass through), you can do something like this:
user_switches=
while [ $# != 0 ]
do
case x$1 in
x--pass-through)
[ $# -gt 1 ] || die "need an argument for $1"
user_switches="$user_switches "`shell-quote -- "$2"`
shift;;
# process other switches
esac
shift
done
# later
eval "shell-quote some-command $user_switches my args"
OPTIONS --debug
Turn debugging on.
--help
Show the usage message and die.
--version
Show the version number and exit.
AVAILABILITY
The code is licensed under the GNU GPL. Check http://www.argon.org/~roderick/ or CPAN for updated versions.
AUTHOR
Roderick Schertler <roderick@argon.org>
perl v5.16.3 2010-06-11 SHELL-QUOTE(1)