10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hi all,
i have a logfile which is continuously being updated. I have built a script to check for a specific content and if it is found, it sends a string into a file. Here's the current script:
#!/bin/bash
logfile=/opt/jboss-eap-6.3/standalone/log/server.log
tail -fn0 $logfile | \... (7 Replies)
Discussion started by: nms
7 Replies
2. Shell Programming and Scripting
hi all,
i had the below script
x=`cat input.txt |wc -1`
awk 'NR>1 && NR<'$x' ' input.txt > output.txt
by using above script i am able to remove the head and tail part from the input file and able to append the output to the output.txt but if i run it for second time the output is... (2 Replies)
Discussion started by: hemanthsaikumar
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3. Shell Programming and Scripting
I would like to write a shell script to do the following , would advise how to make it ? very thanks
1. Connect LDAP server ( Id : user , password : pass )
2. check the field "user_account_create_date" in the LDAP server , the format of data in this field in LDAP is ABC20130922 ( 22 Sep ,... (3 Replies)
Discussion started by: ust3
3 Replies
4. Shell Programming and Scripting
Hi All,
I m very new to unix...i jus want to chk the content of file.
ma requirement is
if file has a content then
display it
else
dont display or something
pls specify which loop shalli use either for or while?? (20 Replies)
Discussion started by: navsan
20 Replies
5. Shell Programming and Scripting
Hi,
I have a text file in the below format.
$cat my_paramater_file.txt
'
$$ETL_EXTRACT_DATE=07/17/2011 17:55:05.000000
'
$
Would like to write script based on the below requirements.
1. The file should not be 0 byte.
2. The content of the file should be 4 lines and the... (1 Reply)
Discussion started by: Alex_Smith
1 Replies
6. AIX
Hi everybody!
I wonder if I could see some text content of a website, via command line...
That could be very helpful, in order to automatize a lot of projects im working on.
thx a lot (2 Replies)
Discussion started by: Datinsky
2 Replies
7. Shell Programming and Scripting
Hi all,
I need to write an automated bash shell script which performs such operations:
1. Grep the header of everyline with the initial of "T" in "FILE_A"
2. Perform a for loop,
Count the numbers of comma in the line of code,
if (no. of comma < 17)
ADD the comma until 17;
... (2 Replies)
Discussion started by: big_nutz
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8. Shell Programming and Scripting
I have a shell script that takes a file and uses "syncsort" to sort contents.
I want to add a condition to check whether the input file is textual or binary format. If textual, the "syncsort" will be used to sort the files contents. Otherwise, the sorting process will be skipped.
Note that the... (3 Replies)
Discussion started by: synthea
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9. Shell Programming and Scripting
Hello everyone, I'm trying the best way to implement a check on a variable ... in particular I need to assess the content of characters and numbers , I tried on various manuals bash scripting but I could not figure out how to do ... any help? (3 Replies)
Discussion started by: ionral
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10. UNIX for Dummies Questions & Answers
hi guys, im learning so be gentle...
i'm wanting to write a script to read in a customer number.
in order that the code is robust i want to check
1) the length of the value entered (4 characters)
2) that all characters entered are numeric between the values 1 to 3
3) that a value is... (1 Reply)
Discussion started by: skinnygav
1 Replies
Char(3) User Contributed Perl Documentation Char(3)
NAME
PDL::Char -- PDL subclass which allows reading and writing of fixed-length character strings as byte PDLs
SYNOPSIS
use PDL;
use PDL::Char;
my $pchar = PDL::Char->new( [['abc', 'def', 'ghi'],['jkl', 'mno', 'pqr']] );
$pchar->setstr(1,0,'foo');
print $pchar; # 'string' bound to "", perl stringify function
# Prints:
# [
# ['abc' 'foo' 'ghi']
# ['jkl' 'mno' 'pqr']
# ]
print $pchar->atstr(2,0);
# Prints:
# ghi
DESCRIPTION
This subclass of PDL allows one to manipulate PDLs of 'byte' type as if they were made of fixed length strings, not just numbers.
This type of behavior is useful when you want to work with charactar grids. The indexing is done on a string level and not a character
level for the 'setstr' and 'atstr' commands.
This module is in particular useful for writing NetCDF files that include character data using the PDL::NetCDF module.
FUNCTIONS
new
Function to create a byte PDL from a string, list of strings, list of list of strings, etc.
# create a new PDL::Char from a perl array of strings
$strpdl = PDL::Char->new( ['abc', 'def', 'ghij'] );
# Convert a PDL of type 'byte' to a PDL::Char
$strpdl1 = PDL::Char->new (sequence (byte, 4, 5)+99);
$pdlchar3d = PDL::Char->new([['abc','def','ghi'],['jkl', 'mno', 'pqr']]);
string
Function to print a character PDL (created by 'char') in a pretty format.
$char = PDL::Char->new( [['abc', 'def', 'ghi'], ['jkl', 'mno', 'pqr']] );
print $char; # 'string' bound to "", perl stringify function
# Prints:
# [
# ['abc' 'def' 'ghi']
# ['jkl' 'mno' 'pqr']
# ]
# 'string' is overloaded to the "" operator, so:
# print $char;
# should have the same effect.
setstr
Function to set one string value in a character PDL. The input position is the position of the string, not a character in the string. The
first dimension is assumed to be the length of the string.
The input string will be null-padded if the string is shorter than the first dimension of the PDL. It will be truncated if it is longer.
$char = PDL::Char->new( [['abc', 'def', 'ghi'], ['jkl', 'mno', 'pqr']] );
$char->setstr(0,1, 'foobar');
print $char; # 'string' bound to "", perl stringify function
# Prints:
# [
# ['abc' 'def' 'ghi']
# ['foo' 'mno' 'pqr']
# ]
$char->setstr(2,1, 'f');
print $char; # 'string' bound to "", perl stringify function
# Prints:
# [
# ['abc' 'def' 'ghi']
# ['foo' 'mno' 'f'] -> note that this 'f' is stored "f "
# ]
atstr
Function to fetch one string value from a PDL::Char type PDL, given a position within the PDL. The input position of the string, not a
character in the string. The length of the input string is the implied first dimension.
$char = PDL::Char->new( [['abc', 'def', 'ghi'], ['jkl', 'mno', 'pqr']] );
print $char->atstr(0,1);
# Prints:
# jkl
perl v5.8.0 2001-05-27 Char(3)