TAILF(1) Linux Programmer's Manual TAILF(1)NAME
tailf - follow the growth of a log file
SYNOPSIS
tailf [OPTION] file
DESCRIPTION
tailf will print out the last 10 lines of a file and then wait for the file to grow. It is similar to tail -f but does not access the file
when it is not growing. This has the side effect of not updating the access time for the file, so a filesystem flush does not occur peri-
odically when no log activity is happening.
tailf is extremely useful for monitoring log files on a laptop when logging is infrequent and the user desires that the hard disk spin down
to conserve battery life.
Mandatory arguments to long options are mandatory for short options too.
-n, --lines=N, -N
output the last N lines, instead of the last 10.
AUTHOR
This program was originally written by Rik Faith (faith@acm.org) and may be freely distributed under the terms of the X11/MIT License.
There is ABSOLUTELY NO WARRANTY for this program.
The latest inotify based implementation was written by Karel Zak (kzak@redhat.com).
SEE ALSO tail(1), less(1)AVAILABILITY
The tailf command is part of the util-linux package and is available from ftp://ftp.kernel.org/pub/linux/utils/util-linux/.
13 February 2003 TAILF(1)
Check Out this Related Man Page
SWITCH_ROOT(8) System Administration SWITCH_ROOT(8)NAME
switch_root - switch to another filesystem as the root of the mount tree
SYNOPSIS
switch_root [-hV]
switch_root newroot init [arg...]
DESCRIPTION
switch_root moves already mounted /proc, /dev and /sys to newroot and makes newroot the new root filesystem and starts init process.
WARNING: switch_root removes recursively all files and directories on the current root filesystem.
OPTIONS -h, --help
show help and exit
-V, --version
show version number and exit
RETURN VALUE
switch_root returns 0 on success and 1 on failure.
NOTES
switch_root will fail to function if newroot is not the root of a mount. If you want to switch root into a directory that does not meet
this requirement then you can first use a bind-mounting trick to turn any directory into a mount point:
mount --bind $DIR $DIR
SEE ALSO mount(8)chroot(2)init(8)mkinitrd(8)AUTHORS
Peter Jones <pjones@redhat.com>
Jeremy Katz <katzj@redhat.com>
Karel Zak <kzak@redhat.com>
AVAILABILITY
The switch_root command is part of the util-linux package and is available from ftp://ftp.kernel.org/pub/linux/utils/util-linux/.
util-linux June 2009 SWITCH_ROOT(8)
hi guys!
just want to ask if you could help me with the sript i'm working on. i need to automatically generate a summarized report everyday for all transactions the day before and ftp it to another machine. my only problem is that i need to name the file as the date yesterday. for example if i... (12 Replies)
Hello,
I am going to install linux on my new laptop. It is currently using windows, is it possible to remove windows? if it is, how do I do it? :confused: (9 Replies)
Hello. I would be very pleased if sb. help me to solve my problem. I've got a file with many non blank lines and I want to merge all lines into one not destroy the informations on them. I've tryed it with split and paste, tr, sed , but everything I've done has been wrong. I know about crazy... (8 Replies)
I am currently working on code that simulates a file tail algorithm since the only way to retrieve the required information is from within a file, and this information needs to be retrieved in as close to real time as possible when the event enters the file. I cannot use system("tail <options>")... (6 Replies)
Hello all,
Forgive me if this question was asked before, I'm unable to find an answer to it on this forum upon searching "windows unix".
I have Windows XP at home, and I want to practice Unix, I want to re-learn all Unix commands, Shell script programming and the Vi Editor.
I'm looking... (11 Replies)
I have an event log which is a circular file. I would like to be able to see real-time updates of that event log. Kind of the equivalent of a 'tail -f'. But obviously 'tail -f' won't work if my circular file has already cycled over. Any ideas as to how I can do this? Let me know if I am clear.... (10 Replies)
Hi,
Could some please help me in configuring wireles internet on redhat linux installed on my laptop.
When I booted using windows, I saw the following, which I think is the name of my laptop's wireless card:
Intel(R) PRO/Wireless 3945ABG Network Connection
I have run the following steps... (9 Replies)
I have a log file that is about 1.2 million lines long and about 300MB.
we need a way to clean up this file and only keep the last few thousand lines.
if i use tail command we run our of memory as the file is too big.
I do have a key word to match on.
example, we want to keep every line... (8 Replies)
Hi
I am having hard time getting this right and need some help. I Have several log files, and everyone contains the following 3 lines at the end:
4 ETW000 Disconnected from database.
4 ETW000 End of Transport (0000).
4 ETW000 date&time: 13.01.2011 - 08:03:28
I need to capture the value... (7 Replies)
Hey Folks,
What are the ways we can provide security to kernels.
How can I make my Kernel Unique and not allow anyone to replace my Unique kernel with a standard one.
How can i implement measures to avoid any user to replace or modify GRUB and Kernel...?
Need help on this
Thank you (8 Replies)
Hi I'm a newbie in unix scripting and I'm trying to do a function that do the next:
Run this command: opcdeploy -cmd "utility -xs" -node node.com and store the result in a file.
Get the last ten lines from the stored file and do a search for the number 100, store that search in a variable.
If ... (11 Replies)
Hi All,
I want to check if one my log file is updating properly, how can I achieve it.
The approach I am trying is to get the file size at two different interval and than comparing it eg :
$ ls -ltr | tail -1 | awk '{print $5}'
20480 (7 Replies)
Hi all,
I am sorry if this is a repetitive question and would be happy if I get directed to a source where I can find details about this.
I have a laptop with windows 8, 8 GB RAM and 1 TB hard disk with most of the memory available for use.
I am trying to find a good option to install Linux... (8 Replies)