Login or Register to Ask a Question and Join Our Community


Shell Programming and Scripting

When redirecting tail -F output fail after log rotation?

Login to Discuss or Reply to this Discussion in Our Community

 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting When redirecting tail -F output fail after log rotation?
# 1  
Old 09-11-2015
Network When redirecting tail -F output fail after log rotation?
Redirecting the tail output fails when log rotation happens even though i have used -F. But when i tail and see the output on terminal this does not happen. Note i have also used & to execute this statement in background.

Suppose if i want to tail a file /opt/SAMPLE.txt and redirect its output to /var/tmp/capturelog/SAMPLE.txt, the below code is working fine if i call the method tailf() as tailf /opt/SAMPLE.txt it works fine until /opt/SAMPLE>txt file is rotated.

once the file /opt/SAMPLE.txt got rotated my output redirection stops to /var/tmp/capturelog/SAMPLE.txt


HTML Code:
tailf() {
filename=$(basename $1)
tail -F -n 0  $1 >/var/tmp/capturelog/$filename &
}
Last edited by CN1; 09-11-2015 at 10:52 PM..
# 2  
Old 09-13-2015
Did you consider trying the
Quote:
-f, --follow[={name|descriptor}]
output appended data as the file grows;
an absent option argument means 'descriptor'
option to tail?
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. AIX

Log rotation in PowerHA7

Hi All, I have a situation here ... HACMP is configured with application monitoring script, which is generating messages .... which is running every minute ... And every minute when monitoring script run, one one log file is generating .... and this log file is rotating ... which is rotating... (1 Reply)
Discussion started by: linux.amrit
1 Replies

2. Shell Programming and Scripting

Log rotation script

I have an application that rotate its log once it reaches 100mb and it keeps a total of 24 logs. I am trying to write a script to run daily to tar up the previous day logs files and move them to a different directory. here is a long listing of the logs in the directory: -rw-r--r-- 1 user1 ... (6 Replies)
Discussion started by: e_mikey_2000
6 Replies

3. Solaris

Log rotation

Hi All! I seem to have a problem with log rotation, unless I am doing something wrong, I have type the following command for testing purposes to see if the -s option works but he did not: logadm -w /var/adm/messages -C 8 -c -s 512k -t '/var/adm/messages.$n' -z 1 the file is now at this... (7 Replies)
Discussion started by: fretagi
7 Replies

4. Shell Programming and Scripting

tail and log rotation

Need some suggestion with an old problem form a thread here: https://www.unix.com/shell-programming-scripting/153204-multiple-not-statement-awk.html Since my log is large, I did get help to make a line that splits the log into two partstail -f syslog | awk '!/snmpd|ntpd|reject/{print | "tee... (1 Reply)
Discussion started by: Jotne
1 Replies

5. UNIX for Dummies Questions & Answers

Log Rotation

Hi Guys, Good morning, I just want to know and collect ideas on this one. Regarding rotation of logs as I've observed it's not consistently functioning. I have a server with 8 Partitions, each partition has a dedicated directory for the logs that is needed and I set it every 5mins (300secs) the... (1 Reply)
Discussion started by: rymnd_12345
1 Replies

6. Solaris

Log rotation, twice

hi folk, need advise regarding the log rotation, i have the logadm set at 30 2 * * * /usr/sbin/logadm so it supposed to rotate once per day, but now it rotated twice! but someone my log will rotate at 2:30 AM, but then another 2 hours later, it creates a new and rotate a new log again,... (2 Replies)
Discussion started by: dehetoxic
2 Replies

7. Shell Programming and Scripting

log rotation

Hello all. Due to some reason I can not use HUP to rotate needed log files. So I use the standard method: cp $file $file.1 cat /dev/null > $file But if Java application in this time writing the output to $file, in the beginning of it appears many "^@^@^@^@^@^@". How to avoid it? Or how... (6 Replies)
Discussion started by: mirusnet
6 Replies

8. HP-UX

Log rotation on HP-UX

Can anyone post a sample log rotate and archive configuration on HP-UX? I really don't know how to do that... :( (3 Replies)
Discussion started by: untamed
3 Replies

9. Programming

Fail tail algorithm

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)
Discussion started by: foureightyeast
6 Replies

10. UNIX for Dummies Questions & Answers

Redirecting output to multiple log files?

If I wanted to redirect output to multiple log files, what would be the best way to do that? echo "Unix is awesome" >>unixgod.log >>unixgod.log (3 Replies)
Discussion started by: darthur
3 Replies
Login or Register to Ask a Question