using tail -f Post: 30512

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Hello all, I have search the forum and could not find an answer...Here is what I am trying to do. Every 15 minutes, a script send uptime output to a logfile (dailylog.log), that file contains lines like the one below: 11:21am up 44 days, 19:15, 1 user, load average: 0.00, 0.02, 0.03 ...

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I am trying to extract a particular line from a.log which keeps appending every sec and output that into a newfile b.log which should append itself with filtered data received from a.log I tried tail -f a.log |grep fail| tee -a b.log nothing in b.log tail -f a.log |grep fail >>b.log ...

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Hi All, I notice that the below tail cannot be done. How can i modify this code such that i can always "tail" a variable number of lines ? set num = 100 cat filename|grep xxx| tail -$num

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The program that is running on my machine generates log files. I want to be able to know the number of lines that contain "FT" in the most recent log file. I wrote the following, but it always returns zero. And I know the count is not zero. Any ideas? ls -rt *.log | tail -n 1 | grep -c FT

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Hi All, My query seems to be silly but Iam unable to find where the exact problem lies. I have a script to unzip set of files here is the script #!/bin/ksh Count=`cat /home/gaddamja/Tempfile | wc -l` while do Filename=`cat /home/gaddamja/Tempfile |tail -$Count | head -1` cd...

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I need to tail -f a file so I can monitor it as it is being written to. However, there is a lot of garbage in the file that I don't care about. So normally I would just pipe and grep for the string that is important to me. However, in this case, there are two things I need to grep for. I can't...

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Hi, I want to write a script which will tail a particular file for 15 mins and then sleep for 10 mins and again tail for 15 mins. This cycle will go on for a limited period of time. How can i ensure that tail command will run for 15 mins before calling sleep command Thanks

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I have 250 files that have 16 columns each - all numbered as follows stat.1000, stat.1001, stat.1002, stat.1003....stat.1250. I would like to join all 250 of them together tail by tail as follows. For example stat.1000 a b c d e f stat.1001 g h i j k l So that my output...

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because the tail +2 on the first line gives me the file name pomga I do not want anything like what I miss tail +2 ejemplo.txt ouput ==> ejemplo.txt <== 1 2 3 4 5 6 7 8 9 10

LEARN ABOUT MOJAVE

uri::url5.18

URI::URL(3)						User Contributed Perl Documentation					       URI::URL(3)

NAME

       URI::URL - Uniform Resource Locators

SYNOPSIS

	$u1 = URI::URL->new($str, $base);
	$u2 = $u1->abs;

DESCRIPTION

       This module is provided for backwards compatibility with modules that depend on the interface provided by the "URI::URL" class that used to
       be distributed with the libwww-perl library.

       The following differences exist compared to the "URI" class interface:

       o  The URI::URL module exports the url() function as an alternate constructor interface.

       o  The constructor takes an optional $base argument.  The "URI::URL" class is a subclass of "URI::WithBase".

       o  The URI::URL->newlocal class method is the same as URI::file->new_abs.

       o  URI::URL::strict(1)

       o  $url->print_on method

       o  $url->crack method

       o  $url->full_path: same as ($uri->abs_path || "/")

       o  $url->netloc: same as $uri->authority

       o  $url->epath, $url->equery: same as $uri->path, $uri->query

       o  $url->path and $url->query pass unescaped strings.

       o  $url->path_components: same as $uri->path_segments (if you don't consider path segment parameters)

       o  $url->params and $url->eparams methods

       o  $url->base method.  See URI::WithBase.

       o  $url->abs and $url->rel have an optional $base argument.  See URI::WithBase.

       o  $url->frag: same as $uri->fragment

       o  $url->keywords: same as $uri->query_keywords

       o  $url->localpath and friends map to $uri->file.

       o  $url->address and $url->encoded822addr: same as $uri->to for mailto URI

       o  $url->groupart method for news URI

       o  $url->article: same as $uri->message

SEE ALSO

       URI, URI::WithBase

COPYRIGHT

       Copyright 1998-2000 Gisle Aas.

perl v5.18.2							    2012-02-11							       URI::URL(3)

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