09-24-2008
This smells like a homework question. Assuming that it's not, what are you working on?
Regards
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1. Shell Programming and Scripting
Basically I have to process a text file which has been sorted this way:
John 12
John 13
John 10
John 900
Peter 20
Peter 30
Peter 32
The first column is a name, and the second an arbitrary value, both delimited by a space. How can I sum them up such that it would become:
John 935... (2 Replies)
Discussion started by: Dwee
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2. Homework & Coursework Questions
Use and complete the template provided. The entire template must be completed. If you don't, your post may be deleted!
1. The problem statement, all variables and given/known data:
Hi guys, i'm a new guy here, and it's my first time creating a unix script.
can you guys help me out here? i'd... (3 Replies)
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3. Homework & Coursework Questions
1. The problem statement, all variables and given/known data:
Hi guys, i'm a new guy here, and it's my first time creating a unix script.
can you guys help me out here? i'd really appreciate it. :(
Here's my problem:
This is the file i'm using, it has 6 columns, the first three columns are... (12 Replies)
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4. Shell Programming and Scripting
a,b,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,aa,bb,cc,dd,ee,ff,gg,hh,ii
a thru ii are digits and strings....
The awk needed....if coloumn 9 == i (coloumn 9 is string ), output the sum of x's(coloumn 22 ) in all records and sum of y's (coloumn 23 ) in all records in a file (records.txt).... (6 Replies)
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5. UNIX for Dummies Questions & Answers
Can anyone tell me how sum values in each record of a file and append that value to the end? For instance a typical record will be:
FY12,Budget,771100,,,,,,,,,250,-250
I'd like the record to become
FY12,Budget,771100,,,,,,,,,250,-250,0
which can be put into another file.
Thank you. (6 Replies)
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6. Shell Programming and Scripting
I have a file with the following format
AAAAA 1.34B 0.76B 0.00B 0.00B 0.00B 0.00B 0.00B 0.00B 0.00B 0.00B 0.00B 0.00B 0.00B 0.00B 0.90B 0.00B 0.00B 0.46B 0.00B 0.03B 0.00B ... (4 Replies)
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7. UNIX Desktop Questions & Answers
I was just curious about how to sum the total file size of a certain type of file. For instance:
$find . -name "*.aif"
will print out the paths to each .aif file. Instead of printing, how could one sum the total space used by all of the aif files? Thanks!
Please use code tags (3 Replies)
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8. Shell Programming and Scripting
I'm trying to sum a text file using AWK. Here is an example of the file:
600|3H68| 46
600|3H69| 46
600|3H6F| 290
600|3H6G| 24
600|3HDY| 1
600|3HDY| 3
600|3HE0| 1
600|3HE0| 3
I would like to sum the third field if the first... (7 Replies)
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9. Shell Programming and Scripting
I have an input file that looks like:
ID1 V1 ID2 V2 P1 P2 P3 P4 ..... n no. of columns
1 1 1 1 1.0000 1.0000 1.0000 1.0000
1 1 1 2 0.9999 0.8888 0.7777 0.6666
1 2 1 1 0.8888 0.7777 0.6666 0.5555
1 2 1 2 0.7777 0.6666 0.5555 0.4444
2 1 1 1 0.6666 0.5555 0.4444 0.3333
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10. Shell Programming and Scripting
input:
chr1 1 2 3
chr1 1 2 4
chr1 2 4 5
chr2 3 6 9
chr2 3 6 10
Code:
awk '{a+=$4}END{for (i in a) print i,a}' input
Output:
chr112 7
chr236 19
chr124 5
Desired output:
chr1 1 2 7
chr2 3 6 19
chr1 2 4 5 (1 Reply)
Discussion started by: jacobs.smith
1 Replies
LEARN ABOUT PHP
stream_wrapper_register
STREAM_WRAPPER_REGISTER(3) 1 STREAM_WRAPPER_REGISTER(3)
stream_wrapper_register - Register a URL wrapper implemented as a PHP class
SYNOPSIS
bool stream_wrapper_register (string $protocol, string $classname, [int $flags])
DESCRIPTION
Allows you to implement your own protocol handlers and streams for use with all the other filesystem functions (such as fopen(3), fread(3)
etc.).
PARAMETERS
o $protocol
- The wrapper name to be registered.
o $classname
- The classname which implements the $protocol.
o $flags
- Should be set to STREAM_IS_URL if $protocol is a URL protocol. Default is 0, local stream.
RETURN VALUES
Returns TRUE on success or FALSE on failure.
stream_wrapper_register(3) will return FALSE if the $protocol already has a handler.
CHANGELOG
+--------+------------------------------+
|Version | |
| | |
| | Description |
| | |
+--------+------------------------------+
| 5.2.4 | |
| | |
| | Added the $flags parameter. |
| | |
+--------+------------------------------+
EXAMPLES
Example #1
How to register a stream wrapper
<?php
$existed = in_array("var", stream_get_wrappers());
if ($existed) {
stream_wrapper_unregister("var");
}
stream_wrapper_register("var", "VariableStream");
$myvar = "";
$fp = fopen("var://myvar", "r+");
fwrite($fp, "line1
");
fwrite($fp, "line2
");
fwrite($fp, "line3
");
rewind($fp);
while (!feof($fp)) {
echo fgets($fp);
}
fclose($fp);
var_dump($myvar);
if ($existed) {
stream_wrapper_restore("var");
}
?>
The above example will output:
line1
line2
line3
string(18) "line1
line2
line3
"
SEE ALSO
The "streamWrapper" prototype class, "Example class registered as stream wrapper", stream_wrapper_unregister(3), stream_wrapper_restore(3),
stream_get_wrappers(3).
PHP Documentation Group STREAM_WRAPPER_REGISTER(3)