Try this:
If you let tail run in the backgroundit lets grep work. As tail dumps out to stdout, grep is patiently waiting, reading stdin.
This will just dump out to your screen until you hit something like ctrl+c. If you want something more elaborate, you could sent the tail output to a different fd, and have grep read in from that fd.
Hello all,
I have search the forum and could not find an answer...Here is what I am trying to do. Every 15 minutes, a script send uptime output to a logfile (dailylog.log), that file contains lines like the one below:
11:21am up 44 days, 19:15, 1 user, load average: 0.00, 0.02, 0.03
... (7 Replies)
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
... (4 Replies)
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 -$num (5 Replies)
The program that is running on my machine generates log files. I want to be able to know the number of lines that contain "FT" in the most recent log file. I wrote the following, but it always returns zero. And I know the count is not zero. Any ideas?
ls -rt *.log | tail -n 1 | grep -c FT (6 Replies)
Hi All,
My query seems to be silly but Iam unable to find where the exact problem lies.
I have a script to unzip set of files
here is the script
#!/bin/ksh
Count=`cat /home/gaddamja/Tempfile | wc -l`
while
do
Filename=`cat /home/gaddamja/Tempfile |tail -$Count | head -1`
cd... (7 Replies)
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... (3 Replies)
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... (8 Replies)
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 (6 Replies)
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)
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 Replies)
Discussion started by: tricampeon81
2 Replies
LEARN ABOUT OSF1
uudemon.cleanu
uudemon(4) Kernel Interfaces Manual uudemon(4)NAME
uudemon.admin, uudemon.cleanu, uudemon.hour, uudemon.poll - Administrative shell scripts for polling remote systems, cleaning up spool
directories, reporting status to the system administrator, and routine invocations of the uuxqt and uusched daemons
SYNOPSIS
These shell scripts reside in the following directory:
/usr/lib/uucp
DESCRIPTION
All the scripts can be run from the command line or can be run automatically by the cron daemon. To automatically run the scripts, remove
the comment character (#) from the beginning of the relevant line in the /var/spool/cron/crontabs/uucp file.
This script reports status to the system administrator. It issues the uustat command to find out the status of uucp jobs. It mails the
results to the uucp login ID. The script may be modified to send mail to any login ID such as the uucp administrative login ID (uucpa) or
root. This script cleans up the /var/spool/uucp and /var/spool/uucppublic directories by running the uucleanup command. The uucleanup com-
mand is run with the following parameters: -C7, -D7, X2, -o2, -W1. This script runs the uusched and uuxqt daemons in the background. This
script polls the systems listed in the /usr/lib/uucp/Poll file. The uudemon.poll script should be scheduled before the uudemon.hour
script. This allows uudemon.poll to create any command files before cron runs the uudemon.hour script.
FILES
Contains the uudemon.admin, uudemon.cleanu, uudemon.hour and uudemon.poll files. Contains the uucp file.
RELATED INFORMATION
Commands: cron(8), uucleanup(8), uusched(8), uuxqt(1)
Files: /usr/lib/uucp delim off
uudemon(4)