I am very new to scripting in UNIX and in need of help. I am creating a program that will check a file that has a target time in the form of HH:MM:SS before another program can begin executing. The file with the target time will only have that target time in it and nothing else.
Is there any way... (1 Reply)
Hi,
I have a UNIX script which has two parts:
1. It connects to a database and refreshes a materialized view
2. It then connects to another database and inserts refresh statistics to a table
The script works, but I'm not too good at UNIX validation. Currently, if the first part of the job... (1 Reply)
is there any way to check null data against some of the column in file
My file have such structure
1,,4,SUMISHO ,SMG110880 ,1,12,SUMISHO CAPITAL MANAGEMENT (SINGAPORE) PTE LTD ,ACCT01,20080531,2008,5,30,20080630,1,1,TXGRP ,CGST ,1,74,5.18,74,0,5.18... (2 Replies)
Hi All,
I got a file with 3 fields delimited by hyphen "-". I have to validate & cleanse the data before i begine the processing
Requirements
1. No record should contain more than 2 delimiters
2. No record should even contain less than 2 delimiters
3. Any records that matches rule 1 &... (1 Reply)
Hi All,
I got a file with 3 fields delimited by hyphen "-". I have to validate & cleanse the data before i begine the processing
Requirements
1. No record should contain more than 2 delimiters
2. No record should even contain less than 2 delimiters
3. Any records that matches rule 1 &... (3 Replies)
Hi All,
I got a file with 3 fields delimited by hyphen "-". I have to validate & cleanse the data before i begine the processing
Requirements
1. No record should contain more than 2 delimiters
2. No record should even contain less than 2 delimiters
3. Any records that matches rule 1 &... (8 Replies)
Hi,
Im having a hard time in creating a script with the following conditions below. I have a csv file generated which is updated every 5 mins and it contains a timestamp in it. for example:
time data
00:00 1
00:05 0
00:10 6
00:15 3
however, there is a time that... (4 Replies)
How to validate a date and optionly a time in shell scripting when i get the date and time as pararmeters that sent out with the call of the file? (in my case sh union.sh `first parameter ,second parameter...` (4 Replies)
Dears,
I am working on a batch that processes file with name containing date prefix eg., 20101222_file.dat.
The logic is to process files in order. Eg., 20101225 must be processed only after 20101222.
Ok first glance it looked simple, it use a variable to check this date value as number and... (2 Replies)
Discussion started by: naraink
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)