Tail??

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1. 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

2. 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...

3. 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

4. Shell Programming and Scripting

using tail -f and tr in a script

I have file that is being constantly written to example: file.txt ABC EBC ZZZ ABC I am trying to create a simple script that will tail this file and at the same time using tr to change B to F on lines containing 'B'. I tried this and it doesn't seem to work. #!/bin/bash tail -f...

5. UNIX for Dummies Questions & Answers

Need help with a tail and a grep

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...

6. Shell Programming and Scripting

Help with tail command

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...

7. Shell Programming and Scripting

tail | grep

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

8. Shell Programming and Scripting

Tail Question

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

9. 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 ...

10. 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...

LEARN ABOUT V7

uptime

UPTIME(1)							   User Commands							 UPTIME(1)

NAME

       uptime - Tell how long the system has been running.

SYNOPSIS

       uptime [options]

DESCRIPTION

       uptime  gives  a one line display of the following information.	The current time, how long the system has been running, how many users are
       currently logged on, and the system load averages for the past 1, 5, and 15 minutes.

       This is the same information contained in the header line displayed by w(1).

       System load averages is the average number of processes that are either in a runnable or uninterruptable state.	A process  in  a  runnable
       state is either using the CPU or waiting to use the CPU.  A process in uninterruptable state is waiting for some I/O access, eg waiting for
       disk.  The averages are taken over the three time intervals.  Load averages are not normalized for the number of CPUs in  a  system,  so  a
       load average of 1 means a single CPU system is loaded all the time while on a 4 CPU system it means it was idle 75% of the time.

OPTIONS

       -p, --pretty
	      show uptime in pretty format

       -h, --help
	      display this help text

       -s, --since
	      system up since, in yyyy-mm-dd HH:MM:SS format

       -V, --version
	      display version information and exit

FILES

       /var/run/utmp
	      information about who is currently logged on

       /proc  process information

AUTHORS

       uptime was written by Larry Greenfield <greenfie@gauss.rutgers.edu> and Michael K. Johnson <johnsonm@sunsite.unc.edu>

SEE ALSO

       ps(1), top(1), utmp(5), w(1)

REPORTING BUGS

       Please send bug reports to <procps@freelists.org>

procps-ng							   December 2012							 UPTIME(1)

Shell Programming and Scripting