Don
Thanks!
PS. If I would like to search for more than one string (GCATGAAAACATACA and TTTCCAGAAATTGT) and report different number characters (3 and 6. I should be able to do it passing the strings and number of charters as variables, right?
Hi all,
if for example I had a variable containing the string 'hello', is the any way I can output, for example, the e and the 2nd l based on their position in the string not their character (in this case 2 and 4)?
any general pointers in the right direction will be much appreciated, at... (3 Replies)
Hi Please help me to refine my syntax. I want to delete the excess characters from the out put below.
-bash-3.00$ top -b -n2 -d 00.20 |grep Cpu|tail -1 | awk -F ":" '{ print $2 }' | cut -d, -f1
4.4% us
now i want to delete the % and us. How wil i do that to make it just 4.4.
Thanks (7 Replies)
Hi,
I've a csv file seperated by '|' from which I'm trying to remove the excess '|' characters more than the existing fields. My CSV looks like as below.
HRLOAD|Service|AddChange|EN
PERSONID|STATUS|LASTNAME|FIRSTNAME|ITDCLIENTUSERID|ADDRESSLINE1
10000001|ACTIVE|Testazar1|Testore1|20041|||... (24 Replies)
sed -e "s// /g" old.txt > new.txt
While I do know some control characters need to be escaped, can normal characters also be escaped and still work the same way? Basically I do not know all control characters that have a special meaning, for example, ?, ., % have a meaning and have to be escaped... (11 Replies)
helloo
I wonder if there's a way to cut characters out of a string and keep only
the last 2 by using sed.
For example if there's the todays' date:
2012-05-06
and we only want to keep the last 2 characters which are the day.
Is there a quick way to do it with sed? (2 Replies)
Hey guys,
I know that title is a mouthful - I'll try to better explain my struggles a little better...
What I'm trying to do is:
1. Query a db and output to a file, a list of column data.
2. Then, for each line in this file, repeat these values but wrap them with:
ITEM{
... (3 Replies)
Hi,
I have a xml file (Config.xml)
<Header name="" TDate="" PDate="">
<Config>
{"config" { "Nation" "Pri:|Sec:"}}
</Config>
</Header>
Now I wanted to printed all the strings between "". I tried the following
cat Config.xml | sed -n 's/.*\.*//p'
... (8 Replies)
Hi,
I hope you can help me out please?
I need to replace from character 8-16 with AAAAAAAA and the rest should stay the same after character 16
gtwrhtrd11111111rjytwyejtyjejetjyetgeaEHT
wrehrhw22222222hytekutkyukrylryilruilrGEQTH
hrwjyety33333333gtrhwrjrgkreglqeriugn;RUGNEURGU
... (4 Replies)
I have a file that looks like this:
>ID 1
AATAATTCCGGATCGTGC
>ID 2
TTTGACAGTAGAC
>ID 3
AGACGATGACGAT
I am using the following script to report if AATTCCGGATCG is present in any sequence:
awk 'FNR==1{n=substr(FILENAME,1,index(FILENAME,".")-1)} { print n "\t"... (10 Replies)
Discussion started by: Xterra
10 Replies
LEARN ABOUT OSX
io::string
String(3) User Contributed Perl Documentation String(3)NAME
IO::String - Emulate file interface for in-core strings
SYNOPSIS
use IO::String;
$io = IO::String->new;
$io = IO::String->new($var);
tie *IO, 'IO::String';
# read data
<$io>;
$io->getline;
read($io, $buf, 100);
# write data
print $io "string
";
$io->print(@data);
syswrite($io, $buf, 100);
select $io;
printf "Some text %s
", $str;
# seek
$pos = $io->getpos;
$io->setpos(0); # rewind
$io->seek(-30, -1);
seek($io, 0, 0);
DESCRIPTION
The "IO::String" module provides the "IO::File" interface for in-core strings. An "IO::String" object can be attached to a string, and
makes it possible to use the normal file operations for reading or writing data, as well as for seeking to various locations of the string.
This is useful when you want to use a library module that only provides an interface to file handles on data that you have in a string
variable.
Note that perl-5.8 and better has built-in support for "in memory" files, which are set up by passing a reference instead of a filename to
the open() call. The reason for using this module is that it makes the code backwards compatible with older versions of Perl.
The "IO::String" module provides an interface compatible with "IO::File" as distributed with IO-1.20, but the following methods are not
available: new_from_fd, fdopen, format_write, format_page_number, format_lines_per_page, format_lines_left, format_name, format_top_name.
The following methods are specific to the "IO::String" class:
$io = IO::String->new
$io = IO::String->new( $string )
The constructor returns a newly-created "IO::String" object. It takes an optional argument, which is the string to read from or write
into. If no $string argument is given, then an internal buffer (initially empty) is allocated.
The "IO::String" object returned is tied to itself. This means that you can use most Perl I/O built-ins on it too: readline, <>, getc,
print, printf, syswrite, sysread, close.
$io->open
$io->open( $string )
Attaches an existing IO::String object to some other $string, or allocates a new internal buffer (if no argument is given). The
position is reset to 0.
$io->string_ref
Returns a reference to the string that is attached to the "IO::String" object. Most useful when you let the "IO::String" create an
internal buffer to write into.
$io->pad
$io->pad( $char )
Specifies the padding to use if the string is extended by either the seek() or truncate() methods. It is a single character and
defaults to "