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Top Forums Shell Programming and Scripting Extracting fixed length number from a text file Post 302994211 by dsid on Monday 20th of March 2017 12:33:02 PM
Old 03-20-2017
@vgersh. awk -F ' ' is for defining delimiters as far as I know, what does your command mean
Code:
awk -F'[][]'

. The next part is the start of the string I got that and I think $NF would be number of fields, but why are you subtracting 1 from it and then printing that out.

@Scrutinizer: true my command did print out numbers more than 23 in length.


Code:
grep  -Eo '\<[0-9]{23}\>' file

the above command should work perfect as square brackets wont be in delimiters always so the awk command wont work in all occasions.

I am kinda confused as to why we are using single quotes in a grep expression. Cos I was reading the other day that single quotes remove any meaning from the special characters. Shouldn't we use double quotes?

Also the fact the you have used <,>. Are they working as a block to extract only 23 digits numbers/characters?

---------- Post updated at 04:33 PM ---------- Previous update was at 04:25 PM ----------

@andy391791

I tweaked your command a bit cos the square brackets may or may not be present in future texts for finding the 23 digit number. The tweak seems to be working fine

Code:
$ echo 'Original presentment record for ARN  24013935350549886999873 not found'|sed -n 's/.*\([0-9]\{23\}\).*/\1/p'
24013935350549886999873
[dsiddiqui@lxserv01 scripts]$ echo 'Original presentment record for ARN  [24013935350549886999873] not found'|sed -n 's/.*\([0-9]\{23\}\).*/\1/p'
24013935350549886999873

but when I increase the length of the 23 digit number and run the command, it just extracts 23 numbered digits from the complete numeric strings and pastes it, which is not the case that I want. I just want to print 23 digits only if present
 

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.::SWF::TextField(3pm)					User Contributed Perl Documentation				    .::SWF::TextField(3pm)

NAME
SWF::TextField - SWF TextField class SYNOPSIS
use SWF::TextField; $textfield = new SWF::TextField([$flags]); DESCRIPTION
Unlike SWF::Text objects, TextFields cannot be rotated, scaled non-proportionally, or skewed. However, TextFields can be used as form entries and they can use browser-defined fonts. NOTES
: TextField is implemented into Flash since Flash3. Most of features for TextFields are available since Flash4. Simple HTML-tags in TextField are possible since Flash5. METHODS
new SWF::TextField([$flags]); Creates a TextField object whose behaviour is dictated by "flags" (see also SWF::Constants): SWFTEXTFIELD_NOEDIT: Non-editable Textfiled SWFTEXTFIELD_PASSWORD: Obscure user input with astricts. SWFTEXTFIELD_DRAWBOX: Draw a border around TextField SWFTEXTFIELD_MULTILINE: TextFiels may contain multiple lines SWFTEXTFIELD_WORDWRAP: Warp text when text reaches TextField border SWFTEXTFIELD_NOSELECT: TextField is not selected when user clicks on it SWFTEXTFIELD_ALIGN_LEFT: Align text to the left SWFTEXTFIELD_ALIGN_RIGHT: Align text to the right SWFTEXTFIELD_ALIGN_CENTER: Align text to the center SWFTEXTFIELD_ALIGN_JUSTIFY: Justify text SWFTEXTFIELD_HTML: Add HTML markup string SWFTEXTFIELD_HASLENGTH: SWFTEXTFIELD_USEFONT: Want to embed font SWFTEXTFIELD_AUTOSIZE: Flags may be combined with the bitwise OR operation. For example: my $t = new SWF::TextField(SWFTEXTFIELD_MULTILINE | SWFTEXTFIELD_WORDWRAP); $textfield->addString($string) $textfield->addUTF8String($UTF8string) Add $string to TextField. Text is appended to the existing text. $textfield->align($alignment) $textfield->setAlignment($alignment) Set the alignment of the text in the textfield. Possible values are SWFTEXTFIELD_ALIGN_LEFT SWFTEXTFIELD_ALIGN_RIGHT SWFTEXTFIELD_ALIGN_CENTER SWFTEXTFIELD_ALIGN_JUSTIFY By default a SWF::TextField ist left aligned. $textfield->setBounds($width, $height) Sets the width and height of the textfield. $textfield->setColor($red, $green, $blue [, $alpha]) Set the color of the text. An 8 bit value for each parameter. You can use the hex or decimal notation. Even mixed. $tf->setColor(0xcc,0,0x33); $tf->setColor(204,0,51,255); $textfield->setFont($font) Sets an SWF::Font object -$font- to be used in the TextField. $textfield->setPadding($padding) Set TextField padding. $textfield->setHeight($height) Set the height of font in your textfield. $textfield->setIndentation($indentation) Set the indentation of the first line of a paragraph. $textfield->setLeftMargin($left) Sets the left margin of the textfield. $textfield->setRightMargin($right) Sets the right margin of the textfield. $textfield->setMargins($left, $right) Sets left and right margins of $textfield. $textfield->setLineSpacing($linespacing) Sets the space between lines. $textfield->setName($name) $textfield->setVariableName($name) Assigns a name to the TextField which could be used to reference the TextField within ActionScript. $textfield->addChars($string) $textfield->addUTF8Chars($UTF8string) Adds characters to a font that will be available within a textfield. $textfield->setFlags($flags) Set TextField behaviour by "flags" (see above new SWF::TextField) For example: $textfield->setFlags(SWFTEXTFIELD_PASSWORD); $textfield->setLength($length) Sets limit for user input size to $length. $textfield->setFieldHeight($height) Sets height limit for visible part of text field. If $height is set to 0, the height is calculated by used font, see setHeight() method. AUTHOR
Soheil Seyfaie (soheil at users.sourceforge.net). SEE ALSO
SWF, SWF::Action, SWF::Button, SWF::Constants, SWF::DisplayItem, SWF::Font, SWF::Movie, SWF::MovieCip, SWF::Text perl v5.14.2 2011-10-26 .::SWF::TextField(3pm)
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