10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
I've been struggling with this one for quite a while and cannot seem to find a solution for this find/replace scenario. Perhaps I'm getting rusty.
I have a file that contains a number of metrics (exactly 3 fields per line) from a few appliances that are collected in parallel. To identify the... (3 Replies)
Discussion started by: verdepollo
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2. Shell Programming and Scripting
The awk below executes and produces the current output, which is correct, except I can not seem to include the header lines # and ## in the output as well. I tried adding !/^#/ thinking that it would skip the lines with # and output them but the entire file prints as is. Thank you :).
file
... (8 Replies)
Discussion started by: cmccabe
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3. UNIX for Dummies Questions & Answers
Hi,
I'm trying to sort 2 different .txt tab delimited files with the command line:
sort -k 1b,1 inputfile > outputfile
But doing that i'm also sorting the header (that ends at the end of my file).
How can i sort a .txt file without sorting the header but conserving the header in the... (3 Replies)
Discussion started by: alisrpp
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4. UNIX for Dummies Questions & Answers
Hi,
Is there a way to write to a txt file each day but retain the header on the file? I'm cat'ing 5 files into one .txt file each day but I want the new data to be written after the first 2 lines which are:
Progname Size Date Owner
----------------------------
Basically I want my new... (4 Replies)
Discussion started by: Grueben
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5. Shell Programming and Scripting
Hi
I am writing a perl script which checks for the specific column values from a file and writes to the OUT file.
So the feed file has a header information and footer information.
I header information isaround107 lines i.e.
Starts with
START-OF-FILE
.......
so on ....
... (11 Replies)
Discussion started by: filter
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6. UNIX for Dummies Questions & Answers
How can i tweak sendmail configuration files so that the "Received:" field is removed from email header information?
Or else can i change Received: (from enswitch@localhost) in email header to something likeReceived: (from xyz@localhost)?
---------- Post updated at 09:57 PM ---------- Previous... (2 Replies)
Discussion started by: proactiveaditya
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7. Shell Programming and Scripting
I have large file with around 100k+ lines. I wanted to retain only the last 100 lines in that file. One way i thought was using
tail -1000 filename > filename1
mv filename1 filename
But there should be a better solution.. Is there a way I can use sed or any such command to change the... (9 Replies)
Discussion started by: nss280
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8. Shell Programming and Scripting
There are directories of files that I have to run the dos2ux command on to get ride of the carriage return characters. Easy enough, but I have to retain the original timestamps on the files. I am thinking that I am going to have to strip off the timestamp for each file and convert it to unix time... (3 Replies)
Discussion started by: scotbuff
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9. Shell Programming and Scripting
Hello.
I have written a bash script that I am sharing with an OS X community I am a member of. The purpose of the script is to execute a series of commands for members without them having to get involved with Terminal, as it can be daunting for those with no experience of it at all. I have renamed... (4 Replies)
Discussion started by: baza210
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10. Linux
say i have these many file in a directory named exam.
1)/exam/newfolder/link.txt.
2)/exam/newfolder1/
and i create a tar say exam.tar
well the problem is,
when i read the tar file i dont find any metadata about the directories,as you cannot create a tar containig empty directories.
on the... (2 Replies)
Discussion started by: Tanvirk
2 Replies
GZENCODE(3) 1 GZENCODE(3)
gzencode - Create a gzip compressed string
SYNOPSIS
string gzencode (string $data, [int $level = -1], [int $encoding_mode = FORCE_GZIP])
DESCRIPTION
This function returns a compressed version of the input $data compatible with the output of the gzip program.
For more information on the GZIP file format, see the document: GZIP file format specification version 4.3 (RFC 1952).
PARAMETERS
o $data
- The data to encode.
o $level
- The level of compression. Can be given as 0 for no compression up to 9 for maximum compression. If not given, the default com-
pression level will be the default compression level of the zlib library.
o $encoding_mode
- The encoding mode. Can be FORCE_GZIP (the default) or FORCE_DEFLATE. Prior to PHP 5.4.0, using FORCE_DEFLATE results in a stan-
dard zlib deflated string (inclusive zlib headers) after a gzip file header but without the trailing crc32 checksum. In PHP 5.4.0
and later, FORCE_DEFLATE generates RFC 1950 compliant output, consisting of a zlib header, the deflated data, and an Adler check-
sum.
RETURN VALUES
The encoded string, or FALSE if an error occurred.
CHANGELOG
+--------+---------------------------------------------------+
|Version | |
| | |
| | Description |
| | |
+--------+---------------------------------------------------+
| 5.4.0 | |
| | |
| | |
| | FORCE_DEFLATE now generates RFC 1950 compliant |
| | output. |
| | |
+--------+---------------------------------------------------+
EXAMPLES
The resulting data contains the appropriate headers and data structure to make a standard .gz file, e.g.:
Example #1
Creating a gzip file
<?php
$data = implode("", file("bigfile.txt"));
$gzdata = gzencode($data, 9);
$fp = fopen("bigfile.txt.gz", "w");
fwrite($fp, $gzdata);
fclose($fp);
?>
SEE ALSO
gzdecode(3), gzdeflate(3), gzinflate(3), gzuncompress(3), gzcompress(3), ZLIB Compressed Data Format Specification (RFC 1950) .
PHP Documentation Group GZENCODE(3)