Visit The New, Modern Unix Linux Community

Top Forums Shell Programming and Scripting How to use command tail -f & show line number. Post 302575029 by @bhi on Sunday 20th of November 2011 12:28:03 AM
Hi,
Try as below
tail -f filename |grep -n "Key word"
 
Test Your Knowledge in Computers #599
Difficulty: Medium
For modern C programming, defining functions is a two step process. First, you declare a function and its signature using a prototype. Then you define the function by providing a function body that defines what the function does.
True or False?

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

tail command in SUN & HP_unix

Hi any SUN expert, All the while I using HP-Unix. Now when i turned into SUN environment, I not sure how the command should look like in SUN sys. HP: tail -n3 file.log (this is the command i normally use) SUN: tail (this 1 not work, donno where went wrong) Please help, thanks! (3 Replies)
Discussion started by: clemeot
3 Replies

2. UNIX for Dummies Questions & Answers

Making Emacs to show line number

Hi all How can I make Emacs to show the line numbers at the left or right as a default. This might help me to quickly jump to a given line. Thanks SS (9 Replies)
Discussion started by: saurya_s
9 Replies

3. UNIX for Dummies Questions & Answers

identifying duplicates line & reporting their line number

I need to find to find duplicate lines in a document and then print the line numbers of the duplicates The files contain multiple lines with about 100 numbers on each line I need something that will output the line numbers where duplicates were found ie 1=5=7, 2=34=76 Any suggestions would be... (5 Replies)
Discussion started by: stresslog
5 Replies

4. UNIX for Dummies Questions & Answers

how to display line number for tail -f

Hi, Just wonder if there is any quick way to display line number when monitoring a log file with tail -f? (4 Replies)
Discussion started by: iengca
4 Replies

5. Solaris

Tail command in one line

HI i have to copy the last 5000 lines form a log file and copy the same in the same file .overwriting the same log file. ex: tail -5000 testfile1 > testfile2 cat testfile2 mv tesftfile2 testfile1 will produce the correct result.but i want to have this done in one line???? (4 Replies)
Discussion started by: saurabh84g
4 Replies

6. Shell Programming and Scripting

tail command not show on screen

Hi, I'm moniroting duplicate text with unix command (tail -f trace75747 | grep 'duplicate'), but it showed many lines then it stop show trace information although trace information in this file trace75747 always got. What should I do? I look forward to hearing from you. THANKS! (10 Replies)
Discussion started by: seyha_moth
10 Replies

7. Shell Programming and Scripting

Show date/time with tail|grep command

Hi, I have a log file without date/time, and I want that everytime tail|grep find something it displays the date/time and the line. I have tried something like this command but without any luck to display the date/time: tail -F catalina.out | sed "s/^/`date `/" | egrep ... (6 Replies)
Discussion started by: julugu
6 Replies

8. Shell Programming and Scripting

Display Specific line number using tail command

Hi , 1)i want to display specific line number using tail command. e.g. display 10 line from end. Please help... 2)Want to display line 10 to 15 (from end)using tail command) (2 Replies)
Discussion started by: vivek1489
2 Replies

9. Homework & Coursework Questions

How to display certain line of file only using head or tail in 1 command?

First month learning about the Linux terminal and it has been a challenge yet fun so far. We're learning by using a gameshell. I'm trying to display a certain line ( only allowed 1 command ) from a file only using the head or tail. I'm pretty about this answer: head -23 history.txt | tail -1... (1 Reply)
Discussion started by: forzatekk
1 Replies

10. UNIX for Beginners Questions & Answers

Grep command to show the number of results

Hi I wanted to know if there is an option in grep command to show the number of results (not the number of lines of findings). Thanks (14 Replies)
Discussion started by: abdossamad2003
14 Replies
INOTAIL(1)						       Inotify enhanced tail							INOTAIL(1)

NAME
inotail - A fast and lightweight version of tail using inotify SYNOPSIS
inotail [OPTION]... [FILE]... DESCRIPTION
inotail is a replacement for the 'tail' program found in the base installation of every Linux/UNIX system. It makes use of the inotify in- frastructure in recent versions of the Linux kernel to speed up tailing files in the follow mode (the '-f' option). Standard tail polls the file every second by default while inotail listens to special events sent by the kernel through the inotify API to determine whether a file needs to be reread. Note: inotail will not work on systems running a kernel without inotify. To enable inotify, please set CONFIG_INOTIFY=y in your Linux kernel configuration and recompile it. Currently inotail is not fully compatible to neither POSIX or GNU tail but might be in the future. OPTIONS
-c N, --bytes=N output the last N bytes. If the first character of N is a '+', begin printing with the Nth character from the start of each file. -f, --follow keep the file(s) open and print appended data as the file grows -n N, --lines=N output the last N lines (default: 10) If the first character of N is a '+', begin printing with the Nth line from the start of each file. -v, --verbose print headers with file names -h, --help show help and exit -V, --version show inotail version and exit AUTHOR
Written by Tobias Klauser <tklauser@distanz.ch> SEE ALSO
tail(1), inotify(7) 2006-08-13 INOTAIL(1)

Featured Tech Videos

All times are GMT -4. The time now is 11:52 PM.
Unix & Linux Forums Content Copyright 1993-2020. All Rights Reserved.
Privacy Policy