10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
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
2. Shell Programming and Scripting
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
3. Shell Programming and Scripting
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)
Discussion started by: @bhi
6 Replies
4. Shell Programming and Scripting
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)
Discussion started by: zerofire123
8 Replies
5. UNIX for Dummies Questions & Answers
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)
Discussion started by: Silver11
3 Replies
6. Shell Programming and Scripting
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 -$Count | head -1`
cd... (7 Replies)
Discussion started by: jagadish_gaddam
7 Replies
7. Shell Programming and Scripting
The program that is running on my machine generates log files. I want to be able to know the number of lines that contain "FT" in the most recent log file. I wrote the following, but it always returns zero. And I know the count is not zero. Any ideas?
ls -rt *.log | tail -n 1 | grep -c FT (6 Replies)
Discussion started by: sdilucca
6 Replies
8. Shell Programming and Scripting
Hi All,
I notice that the below tail cannot be done.
How can i modify this code such that i can always "tail" a variable number of lines ?
set num = 100
cat filename|grep xxx| tail -$num (5 Replies)
Discussion started by: Raynon
5 Replies
9. Shell Programming and Scripting
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)
Discussion started by: wannalearn
4 Replies
10. Shell Programming and Scripting
Working in HP-UX 10.20. I eventually want to write a bourne shell script to handle the following problem, but for now I am just toying with it at the command line.
Here's what I am basically trying to do:
tail -f log_X | grep n > log_Y
I am doing a tail -f on log_X . Once it sees "n", I... (6 Replies)
Discussion started by: cdunavent
6 Replies
UPTIME(1) Linux User's Manual UPTIME(1)
NAME
uptime - Tell how long the system has been running.
SYNOPSIS
uptime
uptime [-V]
DESCRIPTION
uptime gives a one line display of the following information. The current time, how long the system has been running, how many users are
currently logged on, and the system load averages for the past 1, 5, and 15 minutes.
This is the same information contained in the header line displayed by w(1).
System load averages is the average number of processes that are either in a runnable or uninterruptable state. A process in a runnable
state is either using the CPU or waiting to use the CPU. A process in uninterruptable state is waiting for some I/O access, eg waiting for
disk. The averages are taken over the three time intervals. Load averages are not normalized for the number of CPUs in a system, so a
load average of 1 means a single CPU system is loaded all the time while on a 4 CPU system it means it was idle 75% of the time.
FILES
/var/run/utmp
information about who is currently logged on
/proc process information
AUTHORS
uptime was written by Larry Greenfield <greenfie@gauss.rutgers.edu> and Michael K. Johnson <johnsonm@sunsite.unc.edu>.
Please send bug reports to <albert@users.sf.net>
SEE ALSO
ps(1), top(1), utmp(5), w(1)
Cohesive Systems 26 Jan 1993 UPTIME(1)