05-09-2012
1. length > 20 -- checks line length
2. $0=substr($0,0,20) -- if step1 is true then do this action
set line to first 20 characters
3. Print the complete line.
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Is there a command that sets a variable length?
I have a input of a variable length field but my output for that field needs to be set to 32 char.
Is there such a command?
I am on a sun box running ksh
Thanks (2 Replies)
Discussion started by: r1500
2 Replies
2. Shell Programming and Scripting
Greetings,
I need to take a fixed length file, similar to the following:
<input file>
1233 e 612 i
43378 f 03 x
22 17 e 9899
a 323e a6 z7
read in the character in position 6, and if that character = e, delete that line from the file.
<output file>
43378 f 03 x
22 17 e 9899
... (4 Replies)
Discussion started by: dabear
4 Replies
3. UNIX for Dummies Questions & Answers
I want to find out the record length of a fixed length file? I forgot the command. Any body know? (9 Replies)
Discussion started by: tranq01
9 Replies
4. UNIX for Dummies Questions & Answers
Hi, all.
I need to convert a file tab delimited/variable length file in AIX to a fixed lenght file delimited by spaces. This is the input file:
10200002<tab>US$ COM<tab>16/12/2008<tab>2,3775<tab>2,3783
19300978<tab>EURO<tab>16/12/2008<tab>3,28523<tab>3,28657
And this is the expected... (2 Replies)
Discussion started by: Everton_Silveir
2 Replies
5. Shell Programming and Scripting
Hi all,
I want to delete all lowercase characters from my file, but only strings of length 7 and more.
For example, how can I go from:
JHGEFigeIGDUIirfyfiyhgfoiyfKJHGuioyrDHG
To:
JHGEFigeIGDUIKJHGuioyrDHG
There should be a trick to add to sed 's///g', but I can't figure it out.... (2 Replies)
Discussion started by: elbuzzo
2 Replies
6. Shell Programming and Scripting
Masters,
I have fixed length input file like FHEAD0000000001XXXX20090901 0000009000Y1000XXX2
THEAD000000000220090901 ITM0000109393813 430143504352N22SP 000000000000RN000000010000EA P0000000000000014390020090901
TTAIL0000000003000000
FTAIL00000000040000000002
Note... (4 Replies)
Discussion started by: bittoo
4 Replies
7. Shell Programming and Scripting
Hii ,I am new to Unix ,i have a flat file which is (fixed length) sitting in unix,Which is holding the data for a table.I want to extract one column(length7-10) on the basis of another column(length13-15) and want only one single row
Example:
Below is the sample of flat file.
1111 AAAA 100 ... (4 Replies)
Discussion started by: laxmi1166
4 Replies
8. Shell Programming and Scripting
Hello All,
I working on ksh. I am using fixed length file. My file is like:
========
IXTTIV110827 NANTH AM IKSHIT
ABCDEF 0617 IJAY NAND EENIG
ZXYWVU 0912 AP OOK OONG
PQRSTU100923 NASA DISH TTY
ASDFG 0223 GHU UMA LAM
QWERT 0111 ATHE SH THEW
=======
From 7th to 12 is a date... (4 Replies)
Discussion started by: AnanthaDikshit
4 Replies
9. UNIX for Dummies Questions & Answers
I have a fixed width file of length 53. when is try to get the lengh of the record of that file i get 2 different answers.
awk '{print length;exit}' <File_name>
The above code gives me length 50.
wc -L <File_name>
The above code gives me length 53.
Please clarify on... (2 Replies)
Discussion started by: Amrutha24
2 Replies
10. Shell Programming and Scripting
Hi Everyone,
I need to increment a value in the fixed length file. The file has almost a million rows. Is there any easy way to accomplish this.
Ex
input file
ASDSD ADSD 00000 X
AAASD ADSD 00000 X
SDDDD ADSD 00000 X
Ouput
ASDSD ADSD 00001 X
AAASD ADSD 00002 X
SDDDD ADSD 00003 X
... (7 Replies)
Discussion started by: saratha14
7 Replies
SUBSTR(3) 1 SUBSTR(3)
substr - Return part of a string
SYNOPSIS
string substr (string $string, int $start, [int $length])
DESCRIPTION
Returns the portion of $string specified by the $start and $length parameters.
PARAMETERS
o $string
- The input string. Must be one character or longer.
o $start
- If $start is non-negative, the returned string will start at the $start'th position in $string, counting from zero. For
instance, in the string ' abcdef', the character at position 0 is ' a', the character at position 2 is ' c', and so forth. If
$start is negative, the returned string will start at the $start'th character from the end of $string. If $string is less than or
equal to $start characters long, FALSE will be returned.
Example #1
Using a negative $start
<?php
$rest = substr("abcdef", -1); // returns "f"
$rest = substr("abcdef", -2); // returns "ef"
$rest = substr("abcdef", -3, 1); // returns "d"
?>
o $length
- If $length is given and is positive, the string returned will contain at most $length characters beginning from $start (depend-
ing on the length of $string). If $length is given and is negative, then that many characters will be omitted from the end of
$string (after the start position has been calculated when a $start is negative). If $start denotes the position of this trunca-
tion or beyond, false will be returned. If $length is given and is 0, FALSE or NULL, an empty string will be returned. If
$length is omitted, the substring starting from $start until the end of the string will be returned.
Example #2
Using a negative $length
<?php
$rest = substr("abcdef", 0, -1); // returns "abcde"
$rest = substr("abcdef", 2, -1); // returns "cde"
$rest = substr("abcdef", 4, -4); // returns false
$rest = substr("abcdef", -3, -1); // returns "de"
?>
RETURN VALUES
Returns the extracted part of $string; or FALSE on failure, or an empty string.
CHANGELOG
+--------------+---------------------------------------------------+
| Version | |
| | |
| | Description |
| | |
+--------------+---------------------------------------------------+
|5.2.2 - 5.2.6 | |
| | |
| | If the $start parameter indicates the position |
| | of a negative truncation or beyond, false is |
| | returned. Other versions get the string from |
| | start. |
| | |
+--------------+---------------------------------------------------+
EXAMPLES
Example #3
Basic substr(3) usage
<?php
echo substr('abcdef', 1); // bcdef
echo substr('abcdef', 1, 3); // bcd
echo substr('abcdef', 0, 4); // abcd
echo substr('abcdef', 0, 8); // abcdef
echo substr('abcdef', -1, 1); // f
// Accessing single characters in a string
// can also be achieved using "square brackets"
$string = 'abcdef';
echo $string[0]; // a
echo $string[3]; // d
echo $string[strlen($string)-1]; // f
?>
Example #4
substr(3) casting behaviour
<?php
class apple {
public function __toString() {
return "green";
}
}
echo "1) ".var_export(substr("pear", 0, 2), true).PHP_EOL;
echo "2) ".var_export(substr(54321, 0, 2), true).PHP_EOL;
echo "3) ".var_export(substr(new apple(), 0, 2), true).PHP_EOL;
echo "4) ".var_export(substr(true, 0, 1), true).PHP_EOL;
echo "5) ".var_export(substr(false, 0, 1), true).PHP_EOL;
echo "6) ".var_export(substr("", 0, 1), true).PHP_EOL;
echo "7) ".var_export(substr(1.2e3, 0, 4), true).PHP_EOL;
?>
The above example will output:
1) 'pe'
2) '54'
3) 'gr'
4) '1'
5) false
6) false
7) '1200'
ERRORS
/EXCEPTIONS
Returns FALSE on error.
Example #5
<?php
var_dump(substr('a', 1)); // bool(false)
?>
SEE ALSO
strrchr(3), substr_replace(3), preg_match(3), trim(3), mb_substr(3), wordwrap(3), String access and modification by character.
PHP Documentation Group SUBSTR(3)