12-19-2008
You can use Tie::File and access the file like an array so its easy to jump lines in a file since you can use the line numbers as the array index.
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1. Shell Programming and Scripting
Hello People,
Need some assistance/guidance.
OUTLINE:
Two files (File1 and File2)
File1 has some ids such as
009463_3922_1827
897654_8764_5432
File2 has things along the lines of:
Query= 009463_3922_1827 length=252
(252 letters)
More stufff here
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Hi All,
Please find the sample file below:
NAME ID NUMBER
-------------------------------------------------------------------------------------------------- ---------
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4. Shell Programming and Scripting
I have in a file
domain.com. 1909 IN A 1.22.33.44
domain.com. 1909 IN A 22.33.44.55
ns1.domain.com. 1699 IN A 33.44.55.66
ns2.domain.com. 1806 IN A 77.77.66.66
I need to "grep" or "awk" out the lines starting with domain.com. as follows.
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5. Shell Programming and Scripting
i have a file as below
sample.pl
parameter1
argument1
argument2
parameter2
I want out as below
argument1
argument2
that is , i want to print all the lines between parameter1 & parameter 2.
i tried with the following
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6. Shell Programming and Scripting
I am using Solaris, I want to print
3 lines before pattern match
pattern
5 lines after pattern match
Pattern is abcd to be searched in a.txt. Looking for the solution in sed/awk/perl. Thanks ..
Input File a.txt:
=================
1
2
3
abcd
4
5
6
7
8 (7 Replies)
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i need to search for a pattern from a big file and print everything expect the next 6 lines from where the pattern match was made. (8 Replies)
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8. Shell Programming and Scripting
I need to print the lines that do not match a pattern. I tried using grep -v and sed -n '/pattern/!p', but both of them are not working as I am passing the pattern as variable and it can be null some times.
Example
........ abcd......
.........abcd......
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9. Shell Programming and Scripting
Data:
Pattern Data Data Data
Data Data Data
Data Data Data
...
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Hello Experts , require help . See below output:
File inputs
------------------------------------------
Server Host = mike
id rl images allocated last updated density
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LEARN ABOUT DEBIAN
tie::substrhash
Tie::SubstrHash(3perl) Perl Programmers Reference Guide Tie::SubstrHash(3perl)
NAME
Tie::SubstrHash - Fixed-table-size, fixed-key-length hashing
SYNOPSIS
require Tie::SubstrHash;
tie %myhash, 'Tie::SubstrHash', $key_len, $value_len, $table_size;
DESCRIPTION
The Tie::SubstrHash package provides a hash-table-like interface to an array of determinate size, with constant key size and record size.
Upon tying a new hash to this package, the developer must specify the size of the keys that will be used, the size of the value fields that
the keys will index, and the size of the overall table (in terms of key-value pairs, not size in hard memory). These values will not change
for the duration of the tied hash. The newly-allocated hash table may now have data stored and retrieved. Efforts to store more than
$table_size elements will result in a fatal error, as will efforts to store a value not exactly $value_len characters in length, or
reference through a key not exactly $key_len characters in length. While these constraints may seem excessive, the result is a hash table
using much less internal memory than an equivalent freely-allocated hash table.
CAVEATS
Because the current implementation uses the table and key sizes for the hashing algorithm, there is no means by which to dynamically change
the value of any of the initialization parameters.
The hash does not support exists().
perl v5.14.2 2010-12-30 Tie::SubstrHash(3perl)