What is the difference between defining the global variable through our and using use vars ?
Is the variable created using our goes beyond even package scope?
Thanks in Advance !!! (3 Replies)
Hi Folks,
The subject is my question:
Can we pass an array of strings from a Perl Program to a Shell Script?
Please provide some sample code.
Thanks
---------- Post updated at 11:52 PM ---------- Previous update was at 11:43 PM ----------
I got it.
Its here:... (0 Replies)
I have a perl script that opens a text file containing numbers on each line:
for example:
755993
755994
755995
755996
755997
755998
The perl script takes these numbers and store them as an array @raw_data, where I can access individual numbers by using $raw_data for the value 755993.... (2 Replies)
I am reading a file using While loop
while <FILE>
{
$_ = <FILE>;
process data...
}
I would like to quit reading the file once I encounter a String pattern. How do i do it.
is it
if (/SUMMARY/)
{
last;
}
I am having problems with uninitialized value in pattern... (1 Reply)
I have a shell script I want to run that will set environment variables based on the value of an input variable submitted when the shell script is called. For example:
$ mgenv.sh prod
This would set environment variables for prod
$ mgenv.sh test
This would set environment variables... (1 Reply)
I need shell 0r Perl script to read multiple input and do something and come out
example:
echo “ enter the host names separated by space “
read servers
foreach @servers
{ do
do something
done}
Here host names like host1 host2 host3 . . . . . . . so on
Please help me... (8 Replies)
My shell script generates a bunch of lines of text and passes this text as an argument to a perl script.
I'm able to do this, but for some reason newlines don't get recognized in the perl script and so the script just prints actual '\n' instead of carriage returning, otherwise everything gets... (3 Replies)
Hi,
I have a requirement as follows. Have 3 files. Need to match up the data in each one of them and sum up the data by a field and display it. example given below.
File 1 : Name, Emp id
File 2 : Empid, Subject,
File 3 : Subject, Score, Class
Match Emp id in File 1 and File 2 and then... (7 Replies)
I am trying to capture screenshots from a huge list of URLs. I am able to manually capture images of individual pages; that is, I simply run the following command to get a screenshot of Foo.com
$ python /path/to/screencapture.sh http://www.foo.com
I want to modify the script so that instead of... (2 Replies)
I am working on converting shell to Perl script. In shell we have built in function
trap
Do you know alternative in Perl or actually we don't need it?
Thanks for contribution (3 Replies)
Discussion started by: digioleg54
3 Replies
LEARN ABOUT HPUX
read
read(1) General Commands Manual read(1)NAME
read - read a line from standard input
SYNOPSIS
var ...
DESCRIPTION
reads a single line from standard input. The line is split into fields as when processed by the shell (refer to shells in the first field
is assigned to the first variable var, the second field to the second variable var, and so forth. If there are more fields than there are
specified var operands, the remaining fields and their intervening separators are assigned to the last var. If there are more vars than
fields, the remaining vars are set to empty strings.
The setting of variables specified by the var operands affect the current shell execution environment.
Standard input to can be redirected from a text file.
Since affects the current shell execution environment, it is usually provided as a normal shell special (built-in) command. Thus, if it is
called in a subshell or separate utility execution environment similar to the following, it does not affect the shell variables in the
caller's environment:
Options
recognizes the following options:
Do not treat a backslash character in any special way.
Consider each backslash to be part of the input line.
Opperands
recognizes the following operands:
var The name of an existing or nonexisting shell variable.
EXTERNAL INFLUENCES
Environment Variables
determines the internal field separators used to delimit fields.
RETURN VALUE
exits with one of the following values:
0 Successful completion.
>0 End-of-file was detected or an error occurred.
EXAMPLES
Print a file with the first field of each line moved to the end of the line.
while read -r xx yy
do
printf "%s %s
" "$yy" "$xx"
done < input_file
SEE ALSO csh(1), ksh(1), sh(1), sh-posix(1).
STANDARDS CONFORMANCE read(1)