why tail +n not working? Post: 302278442

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1. Shell Programming and Scripting

using tail -f

Working in HP-UX 10.20. I eventually want to write a bourne shell script to handle the following problem, but for now I am just toying with it at the command line. Here's what I am basically trying to do: tail -f log_X | grep n > log_Y I am doing a tail -f on log_X . Once it sees "n", I...

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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 ...

3. Shell Programming and Scripting

tail -f

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 ...

4. Shell Programming and Scripting

script not working after "tail -f"

Hi Everyone , I am facing a strange problem i have made the follwing script to watch a appending log file (abc.log) but its not moving after the line tail -f , any suggestions ===================================== #!/bin/bash while true do tail -f abc.log | grep "exceptions" echo hi...

5. UNIX for Dummies Questions & Answers

AWK Output not working with tail -f

Hi , I have Continuous updating log file. I want to continuously scan that file using "tail -f " and execute a shell command like "date" command when that particular keyword is detected . I am using awk to acheive it but not suceeded so far. However when I use "cat" instead of tail -f this...

6. Shell Programming and Scripting

Help with getting a Ctrl-C trap working w/ a piped tail -f...

Hi All, Although each line below seems to work by itself, I've been having trouble getting the Control-C trap working when I add the "|perl -pe..." to the end of the tail -f line, below. (That |perl -pe statement basically just adds color to highlight the word "ERROR" while tailing a log...

7. Shell Programming and Scripting

tail for 15 mins

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

8. Shell Programming and Scripting

Joining multiple files tail on tail

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...

9. Shell Programming and Scripting

Tail +

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

10. Shell Programming and Scripting

Disk Space Utilization in HTML format working in one environment and not working on the other

Hi Team, I have written the shell script which returns the result of the disk space filesystems which has crossed the threshold limit in HTML Format. Below mentioned is the script which worked perfectly on QA system. df -h | awk -v host=`hostname` ' BEGIN { print "<table border="4"...

LEARN ABOUT LINUX

paste

PASTE(1)							   User Commands							  PASTE(1)

NAME

       paste - merge lines of files

SYNOPSIS

       paste [OPTION]... [FILE]...

DESCRIPTION

       Write  lines  consisting  of  the sequentially corresponding lines from each FILE, separated by TABs, to standard output.  With no FILE, or
       when FILE is -, read standard input.

       Mandatory arguments to long options are mandatory for short options too.

       -d, --delimiters=LIST
	      reuse characters from LIST instead of TABs

       -s, --serial
	      paste one file at a time instead of in parallel

       --help display this help and exit

       --version
	      output version information and exit

AUTHOR

       Written by David M. Ihnat and David MacKenzie.

REPORTING BUGS

       Report paste bugs to bug-coreutils@gnu.org
       GNU coreutils home page: <http://www.gnu.org/software/coreutils/>
       General help using GNU software: <http://www.gnu.org/gethelp/>
       Report paste translation bugs to <http://translationproject.org/team/>

COPYRIGHT

       Copyright (C) 2010 Free Software Foundation, Inc.  License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
       This is free software: you are free to change and redistribute it.  There is NO WARRANTY, to the extent permitted by law.

SEE ALSO

       The full documentation for paste is maintained as a Texinfo manual.  If the info and paste programs are properly installed  at  your  site,
       the command

	      info coreutils 'paste invocation'

       should give you access to the complete manual.

GNU coreutils 8.5						   February 2011							  PASTE(1)

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tail -f

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script not working after "tail -f"

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