is there a command so that i can se info about the parallel port, if there isn't a specific command for that is there a command so i can se info about the system and all ports and devices?
Thanx
/Nick (2 Replies)
Hi,
is there a way to get information of an annex device connected to port A ? i need to get the I.P address of the annex and the port
it connected to on the annex.
dori (1 Reply)
Hi,
I am new to ksh scripting so your help will be much appreciated.
I have a file called file.txt which looks like this
Header 20050702 20050703
ABC
DEF
Header 20050703 20050704
123
456
Header 20050704 20050705
XXX
YYY
What I am trying to do is write out each of the record... (7 Replies)
Dear Sir,
i m going to use NP5610-16 moxa device for multiport serial communication.
i m using fedora-core 6 o.s.
after installation it will detect serial ports as /dev/ttyr0,/dev/ttyr1...ttyr32.
there are total 32 com ports.
now i want to write application which monitor all serial ports and... (6 Replies)
below is an extract from my file and I am trying to use Awk and grep and a while loop to pull infomation from under neath "HBA WWN=".HBA WWN=" reoccurs all over the file but the 100000c.....number are unique and I want to be able to pull and reference specifi information under this header ever time... (2 Replies)
NEWBIE ALERT!
Hi,
I'm 1 month into learning Perl and done reading "Minimal Perl" by Tim Maher (which I enjoyed enoumously). I'm not a programmer by profession but want to use Perl to automate various tasks at my job. I have a problem (obviously) and are looking for your much appreciated help.... (0 Replies)
Hi All,
Following is the program that i have written in cygwin. The redirection of the unfound $param1 to error.txt file doesnt work.Can any one help?
#!/usr/bin/sh
fname=$1
sed 's/ //g' "$fname" > fname1
while read i
do
echo $i > file1
#param1 is script name
... (1 Reply)
I have a record.txt it will update weekly, and it could be 2 lines or more ...
it just echo each line to the script
san jose,23.34%
tampa,2.15%
dallas,30.20%
seattle,44.29%
Unknown,16.72%
How do i write a shell script to give me a test.pl or bash file which contain
#!/home/perl... (8 Replies)
I have if loop with multiple variable value check in if loop. How can i print only if loop satisfied variable and its value in shell script ? I dont want to check each variable in if loop. That makes my script larger.
if ]
then
echo "Only satisfied variable with value"
... (3 Replies)
Discussion started by: prince1987
3 Replies
LEARN ABOUT CENTOS
shell-quote
SHELL-QUOTE(1) User Contributed Perl Documentation SHELL-QUOTE(1)NAME
shell-quote - quote arguments for safe use, unmodified in a shell command
SYNOPSIS
shell-quote [switch]... arg...
DESCRIPTION
shell-quote lets you pass arbitrary strings through the shell so that they won't be changed by the shell. This lets you process commands
or files with embedded white space or shell globbing characters safely. Here are a few examples.
EXAMPLES
ssh preserving args
When running a remote command with ssh, ssh doesn't preserve the separate arguments it receives. It just joins them with spaces and
passes them to "$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)