Sponsored Content
Full Discussion: tail -f for multiple files
Top Forums Shell Programming and Scripting tail -f for multiple files Post 302507879 by dinjo_jo on Friday 25th of March 2011 03:43:20 AM
Old 03-25-2011
if you are on linux it support mult file tail

Code:
tail -f filename -f filename

Or use the below script.

Code:
#!/bin/sh

trap 'kill $(jobs -p)' EXIT

for file in "$@"
do

	tail -f $file &
done

wait

This User Gave Thanks to dinjo_jo For This Post:
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Tail-alike display of new files in directory

The system I work on, produces several kinds of status-files in a single directory. I would like to be able to see the files as they are added to this directory. I was wondering if it would be possible to get a "tail -f" alike view of the ls-command, in such a way that a newly added file is... (4 Replies)
Discussion started by: rschelkers
4 Replies

2. UNIX for Dummies Questions & Answers

Constantly updating log files (tail -f? grep? awk?)

I have a log file which is continuously added to, called log.file. I'd like to monitor this file, and when certain lines are found, update some totals in another file. I've played around with tail -f, grep, and awk, but can't seem to hit the right note, so to speak. The lines I'm... (0 Replies)
Discussion started by: nortonloaf
0 Replies

3. Shell Programming and Scripting

Drop common lines at head/tail of a large set of files

Hi! I have a large set of pairs of text files (each pair in their own subdirectory) and each pair shares head/tail (a couple of first and last lines) but differs in the middle part. I need to delete the heads/tails and keep only the middle portions in which they differ. The lengths of heads/tails... (1 Reply)
Discussion started by: dobryden
1 Replies

4. Solaris

Tail for multiple files

Hi there, I'm trying to run a simple command in Solaris 10: tail -10 *.log But this gives me in the output just last 10 rows of a SINGLE log file :eek: (and there are many in active directory). Please, do you have any idea what's the problem? :confused: Is it a Solaris issue? Thank you in... (2 Replies)
Discussion started by: MartinF
2 Replies

5. UNIX for Dummies Questions & Answers

Using AWK: Extract data from multiple files and output to multiple new files

Hi, I'd like to process multiple files. For example: file1.txt file2.txt file3.txt Each file contains several lines of data. I want to extract a piece of data and output it to a new file. file1.txt ----> newfile1.txt file2.txt ----> newfile2.txt file3.txt ----> newfile3.txt Here is... (3 Replies)
Discussion started by: Liverpaul09
3 Replies

6. Shell Programming and Scripting

head / tail combination returns multiple rows

Hi, As part of our project, we need to load historical data for a year before our system is live. We have the data feed files that we need to load. However, I need to make sure that the file structure (number of fields separated by a comma) on the field is same for all the files of the same... (1 Reply)
Discussion started by: raj.jha
1 Replies

7. Shell Programming and Scripting

Multiple tail -f commands

I need to execute a program which will generate some alarms. I wish to capture those alarms in a single output file. I executed with following command on linux: tail -f test1.alarms -f test2.alarms|awk 'NR>20' >> output But however when I tried to execute same on solaris platforms it fails.... (2 Replies)
Discussion started by: bhallarandeep
2 Replies

8. Shell Programming and Scripting

how to run tail -f for 3 log files from a script

hi i need to run from a bash script tail -f /var/log/access_log >> access1 tail -f /var/log/prod/prod1 >> access1 tail -f /var/log/prod/prod2 >> access1 this script purpose is to start at server boot time and should always run. what is the best way to put it on a script Thanks Dan (1 Reply)
Discussion started by: dan12341234
1 Replies

9. Shell Programming and Scripting

prevent multiple tail in back ground

Dears i have a scrip run in unix that need to use the tail -f command, as below: DATE=`date '+%m%d%y'` tail -f /var/messages | grep "start" >> /export/logs/start_${DATE}.out but the problem that the tail -f will be stop and working in the background in then end of the day (23:59:59)... (0 Replies)
Discussion started by: thehero
0 Replies

10. 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... (2 Replies)
Discussion started by: kayak
2 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)
All times are GMT -4. The time now is 06:03 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy