I am faced with a :confused: tricky problem to parse a data file ( May not be a tricky problem to the scripting guru's ).
Here is what I am faced with. I have a file with multiple rows of data and the rows are not of fixed length. "|" is used as a delimiters for individual columns and each row... (3 Replies)
Hi,
I am a newbie to unix/shell scripting and i have a question on how to parse a txt file using perl in a sh script. I have a txt file that contains hundreds of lines with data like this....
X, Y, Latitude, Longitude
1, 142, -38.000000, -91.000000, 26.348
2, 142, 60.000000, -90.000000,... (2 Replies)
All,
I have a shell script which parses the /var/adm/messages file for errors every 15 minutes as a cron job. The script runs at 01, 16, 31, and 46 minutes every hour. The problem is if the error is encountered any time during the beginning of hour I can get paged three times. I would like to... (2 Replies)
What's the use of parenthesis () in shell programming ?
I saw this in one of the posts in this forum :
echo $($1)
What confounded me was that it evaluated the inner expression and then the outer one, almost like eval. It seemed like it did this in passes. (2 Replies)
I have a script with few pre defined variables.
Also have a config file. Something like this.
# config file
# Define Oracle User
MOD1_TAG=abcde
MOD2_TAG=xyzabc
MOD3_TAG=def
I need to parse the config file and have each of the value copied to different variables.
Please suggest what... (1 Reply)
Hi Unix gurus..
I have a file which has below data, It has several MQ Queue statistics;
QueueName= 'TEST1'
CreateDate= '2009-10-30'
CreateTime= '13.45.40'
QueueType= Predefined
QueueDefinitionType= Local
QMinDepth= 0
QMaxDepth= 0
QueueName= 'TEST2'
CreateDate= '2009-10-30'... (6 Replies)
Hi,
Can anybody help to solve this. I want to parse some xmldata along with the URL in the Shell.
I'm calling the URL via the curl command
Given below is my shell script file
export... (7 Replies)
i want to extract all data with in parenthesis from a file by passing a pattern from another file.i have some sql statements in my file and i want to extract those ddl by refering to a pattern which is in another file and before writting into file i need some transformation to do.Basically i want... (1 Reply)
Hello,
I have a simple shell script, which starts from crontab like this:
00 03 * * 2-6 /export/applications/dte/sh/fwmarg.sh > /export/applications/dte/data/cron_log/fwmarg.cronlog.`date +\%m.\%d` 2>&1
The script doesn't get any argument. But inside it I see the line
... (10 Replies)
I am not too savvy with arrays and am assuming that what I am looking for needs arrays. This is my requirement.
So I have the raw data that gets updated to a log as shown below
StudentInfo:
FullInfo = {
Address = Newark
Age = 20
Name= John
}
StudentInfo:... (2 Replies)
Discussion started by: sidnow
2 Replies
LEARN ABOUT DEBIAN
shell-quote
SHELL-QUOTE(1p) User Contributed Perl Documentation SHELL-QUOTE(1p)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 v5.8.4 2005-05-03 SHELL-QUOTE(1p)