03-23-2018
Quote:
Originally Posted by
rbatte1
Does that help, or have I missed the point?
Robin
Hello Robin, that definitely helps. The original code is swift but I don't mind if code is bash, perl... I just need to see some code that works.
Thank you.
---------- Post updated at 03:34 PM ---------- Previous update was at 03:25 PM ----------
Quote:
Originally Posted by
RudiC
For an index not to exceed array boundaries the modulo operator has proven quite helpful.
Thanks for the input. I gave that a try but couldn't quite work out how to flip the counter to count down negative. I'm not that informed on how to flip the pointer.
---------- Post updated at 03:38 PM ---------- Previous update was at 03:34 PM ----------
Quote:
Originally Posted by
stomp
Remark
Don't use global variables like this in a bigger script!
Thank you.
Last edited by f77hack; 03-23-2018 at 05:34 PM..
Reason: typo
9 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
I am getting an error "ftpNotes.sh: syntax error at line 8 : `<<' unmatched"
#!/bin/ksh
PATH=/usr/sbin/:/usr/bin:/usr/ucb:/etc:/usr/local/bin:.
cd $HOME
if ;then
if ; then
echo 'DSC file already ftp to epm server'
else
ftp -n epmdev00 <<SCRIPT... (1 Reply)
Discussion started by: sibghat
1 Replies
2. Shell Programming and Scripting
Started writing my code.
my read input is not even asking nor working?
And I get a EOF script error.
echo "1) aragorn.domain.net"
echo "2) marvel.domain.net"
echo "3) athena.domain.net"
echo "4) gandalf.domain.net"
echo "5) griffin.domain.net"
echo "What server would you like... (4 Replies)
Discussion started by: chrchcol
4 Replies
3. Shell Programming and Scripting
Hello,
Please tell me if there is a better way to get the number of elements from an array that is passed to a function.
This is what works on Solaris 8 (ksh) but it looks odd:
loop_array() {
array_name=$2
b1='\${\#'
b2='}'
nr_elements=`eval echo... (6 Replies)
Discussion started by: majormark
6 Replies
4. Programming
Please excuse my ineptitude for a bit as I've been spoiled for the past few months with only writing perl code instead of C.
So ok, I've been thinking about some code to change the crc32 values that are held within central directory headers of zip files.
Because I'm lazy I decided to just... (3 Replies)
Discussion started by: VRoemer
3 Replies
5. Shell Programming and Scripting
Hi All,
Could some one help me to reduce the code...
if
then
./plist -m "$queuename" |grep $2|awk '{print $3}' >unlock.log
elif
then
./plist -m "$queuename" |grep $2|awk '{print $4}' >unlock.log
else
./plist -m "$queuename" |grep $2|awk '{print $5}' >unlock.log
.
.
.
.
... (1 Reply)
Discussion started by: harshakusam
1 Replies
6. Shell Programming and Scripting
Let me know if there is a way to pass array to a funtion in ksh script.
function isPresent
{
typeset member
member=$1
dbList=$2
echo '$1:' $1
echo '$2' $dbList
The array will be at the second position....something like this
isPresent 12 <array>
if
then
echo... (3 Replies)
Discussion started by: prasperl
3 Replies
7. Programming
hi all,
i need c++ code to check whether a list is circular or not...
please help (8 Replies)
Discussion started by: vidyaj
8 Replies
8. Shell Programming and Scripting
I have a question on how can I assign a output of a function to a variable which is executed in background.
Here is my example
$ cat sample_program.sh
#!/bin/ksh
exec_func () {
sleep 1
v=`expr $1 + 100`
print $v
}
export OUT_ARR
date
for i in 1 2
do
OUT_ARR=`exec_func $i` &... (1 Reply)
Discussion started by: mohan_kumarcs
1 Replies
9. Shell Programming and Scripting
I have the following code to count the number of how many times the name occurred in one file. The code is working fine and the output is exactly what I want. The problem is the real code has more than 50 names in function listname which cause function name to have more than 50 case ,and function... (14 Replies)
Discussion started by: samsan
14 Replies
LEARN ABOUT CENTOS
shell-quote
SHELL-QUOTE(1) User Contributed Perl Documentation SHELL-QUOTE(1)
NAME
shell-quote - quote arguments for safe use, unmodified in a shell command
SYNOPSIS
shell-quote [switch]... arg...
DESCRIPTION
shell-quote lets you pass arbitrary strings through the shell so that they won't be changed by the shell. This lets you process commands
or files with embedded white space or shell globbing characters safely. Here are a few examples.
EXAMPLES
ssh preserving args
When running a remote command with ssh, ssh doesn't preserve the separate arguments it receives. It just joins them with spaces and
passes them to "$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)