11-05-2009
What kind of array is this? A Perl array?
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I'm working on formatting some attendance data to meet a vendors requirements to upload to their system. With some help on the forums here, I have the data close. But they've since changed what they want.
The vendor wants me to submit three fields to them. Field 1 is the studentid field,... (4 Replies)
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Hello,
I had posted earlier about printing fields using AWK, but now I have a slightly different problem. I have text files in the format:
1*2,3,4,5
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from this input
WEBELSOLAR,29122009,1:1
WIPRO,15062010,2:3
ZANDUREALT,18012007,1:3
i want output as
WEBELSOLAR,20091229,1:1
WIPRO,20100615,2:3
ZANDUREALT,20070118,1:3
basically input is in ddmmyyyy format and i was to convert it to yyyymmdd format (1 Reply)
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4. Shell Programming and Scripting
Dear All,
I would like to add values of a field, if the lines match in a certain field. Then I would like to divide the sum though the number of lines that have a matched field. This is the Input:
Input:
Test1 5
Test1 10
Test2 2
Test2 5
Test2 13
Test3 4
Output:
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Discussion started by: DerSeb
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5. Shell Programming and Scripting
When parsing multiple fields in a file using AWK, how do you group by one of the fields and parse by delimiters?
to clarify
If a file had
tom | 223-2222-4444 , randofield
ivan | 123-2422-4444 , random filed
... | and , are the delimiters ...
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How do I print all the fields of a record except for the $(NF) field? (4 Replies)
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Hi,
Is there any short method to print from a particular field till another filed using awk?
Example File:
File1
====
1|2|acv|vbc|......|100|342
2|3|afg|nhj|.......|100|346
Expected output:
File2
====
acv|vbc|.....|100
afg|nhj|.....|100 (8 Replies)
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8. Shell Programming and Scripting
i have file as with the below content
aaa.bbb.cc.dd
aaa.fff.bb
yyyyy.rrrrr.ggggg.iii
wwww.w.r.ty
i want the o/p as below
dd
bb
iii
ty
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Hi experts,
I need to print the first field first then last two fields should come next and then i need to print rest of the fields.
Input :
a1,abc,jsd,fhf,fkk,b1,b2
a2,acb,dfg,ghj,b3,c4
a3,djf,wdjg,fkg,dff,ggk,d4,d5
Expected output:
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Hi All,
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DATETIME="28-Sep-2013;20:09:08;"
CONTROL="AB"
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LEARN ABOUT MOJAVE
arybase
arybase(3pm) Perl Programmers Reference Guide arybase(3pm)
NAME
arybase - Set indexing base via $[
SYNOPSIS
$[ = 1;
@a = qw(Sun Mon Tue Wed Thu Fri Sat);
print $a[3], "
"; # prints Tue
DESCRIPTION
This module implements Perl's $[ variable. You should not use it directly.
Assigning to $[ has the compile-time effect of making the assigned value, converted to an integer, the index of the first element in an
array and the first character in a substring, within the enclosing lexical scope.
It can be written with or without "local":
$[ = 1;
local $[ = 1;
It only works if the assignment can be detected at compile time and the value assigned is constant.
It affects the following operations:
$array[$element]
@array[@slice]
$#array
(list())[$slice]
splice @array, $index, ...
each @array
keys @array
index $string, $substring # return value is affected
pos $string
substr $string, $offset, ...
As with the default base of 0, negative bases count from the end of the array or string, starting with -1. If $[ is a positive integer,
indices from "$[-1" to 0 also count from the end. If $[ is negative (why would you do that, though?), indices from $[ to 0 count from the
beginning of the string, but indices below $[ count from the end of the string as though the base were 0.
Prior to Perl 5.16, indices from 0 to "$[-1" inclusive, for positive values of $[, behaved differently for different operations; negative
indices equal to or greater than a negative $[ likewise behaved inconsistently.
HISTORY
Before Perl 5, $[ was a global variable that affected all array indices and string offsets.
Starting with Perl 5, it became a file-scoped compile-time directive, which could be made lexically-scoped with "local". "File-scoped"
means that the $[ assignment could leak out of the block in which occurred:
{
$[ = 1;
# ... array base is 1 here ...
}
# ... still 1, but not in other files ...
In Perl 5.10, it became strictly lexical. The file-scoped behaviour was removed (perhaps inadvertently, but what's done is done).
In Perl 5.16, the implementation was moved into this module, and out of the Perl core. The erratic behaviour that occurred with indices
between -1 and $[ was made consistent between operations, and, for negative bases, indices from $[ to -1 inclusive were made consistent
between operations.
BUGS
Error messages that mention array indices use the 0-based index.
"keys $arrayref" and "each $arrayref" do not respect the current value of $[.
SEE ALSO
"$[" in perlvar, Array::Base and String::Base.
perl v5.18.2 2014-01-06 arybase(3pm)