Hi all,
When parameters are passed to the shell script, they are dereferenced by their position. For example,
I call myTest.sh and pass two parameters param1 and param2 as following:
./myTest.sh param1 param2
In the script, myTest.sh, I refer to first parameter (param1 ) as $1 and second... (1 Reply)
HI all
I have a code like
##############################################
minyear()
{
curryear=$1
echo $curryear
}
##Main Program ##
minyear
exit
#######
when i execute "sh scriptname 2005" output should be like 2005 but the output is blank.
I guess i need to pass parameter to... (3 Replies)
Hello,
Can anyone guide me tin passing parameters into user defined function of shell script (KSH).
Here is my code,
InsertRecord()
{
DB_TBL=$(sqlplus $USERID/$PASSWORD@$DATABASE << EOF
set head off
set feed off
set serveroutput on
INSERT INTO TBL1 ( OLD_VAL,
NEW_VAL,
... (7 Replies)
Hi guys,
can someome help with this question, I have defined a function that takes a command as a parameter, but when the command is executed from the function it will throw errors because what I believe is a special character escaping issue. I tried using the backslash to escape the pipe | and >... (2 Replies)
Hello again :)
Am currently trying to write a function which will delete a record from a file.
The code currently looks as such:
function deleteRecord() {
clear
read -p "Please enter the ID of the record you wish to remove: " strID
... (2 Replies)
Hi Gurus,
I want split one huge line file to multiple line, I got code from you guys yesterday.
I want put the code in a script which use two position parameter when run the script.
my code like:
awk '{for (i=1; i<=length($0); i+=$2) print substr($0, i, $2)}' $1 > $1_split
when I run the... (6 Replies)
Hi All,
I have created one function for KSH and was running well with one parameter input since I just had to use $1 to get the parameter.
Now I want to do loop for each parameter(actually filenames) . I have try to use do loop, but $i does not resolve to parameter instead it resolves to 1,... (5 Replies)
Use and complete the template provided. The entire template must be completed. If you don't, your post may be deleted!
1. The problem statement, all variables and given/known data:
2. Relevant commands, code, scripts, algorithms:
#! /bin/ksh
v="ORG_ID"
... (2 Replies)
Discussion started by: sujitdas2104
2 Replies
LEARN ABOUT CENTOS
shell-quote
SHELL-QUOTE(1) User Contributed Perl Documentation SHELL-QUOTE(1)NAME
shell-quote - quote arguments for safe use, unmodified in a shell command
SYNOPSIS
shell-quote [switch]... arg...
DESCRIPTION
shell-quote lets you pass arbitrary strings through the shell so that they won't be changed by the shell. This lets you process commands
or files with embedded white space or shell globbing characters safely. Here are a few examples.
EXAMPLES
ssh preserving args
When running a remote command with ssh, ssh doesn't preserve the separate arguments it receives. It just joins them with spaces and
passes them to "$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)