01-22-2009
use
find with xarg and wc utility
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1. UNIX for Dummies Questions & Answers
Hello:
I'm a very newbee at UNIX/AIX.
What i want to do is to tail a file from the bottom until a certain string is found and write all the lines after the found string to another file.
I've tried out a lot of combination with tail and grep but doesn't find the good one.
Could someone help... (4 Replies)
Discussion started by: Felix2511
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2. Shell Programming and Scripting
Hello all,
I have some weird problem that kinda baffles me. Say I have the following test file:
claudia:~/tmp$ cat testfile.txt
This is a test line
This is the second test line
And yeah, this is the third test line
Then say I want to tail the file, grep for the word "third" then... (7 Replies)
Discussion started by: sylaan
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3. Shell Programming and Scripting
I'm trying to use tail/grep to monitor a log file. The command I cooked up is:
tail -n 50 -f output.log | grep 'type:system' | cut -f 5-
A sample line from the log file is:
1208894862 type:system session:0 severity:4 load started
the columns are tab delimited.
this works ok, except... (3 Replies)
Discussion started by: WasabiVengeance
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4. Shell Programming and Scripting
Hi,
I am writing a shell script that checks catalina logs on a production system and mails me if it detects errors.
It greps the logs for known errors which i have defined as variables.
The problem is the logs are huge, approx 30,000 before they rotate.
So I am forced to use grep instead... (3 Replies)
Discussion started by: Moxy
3 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. UNIX for Dummies Questions & Answers
I have a basic tail/grep question. I have logs that are generated & kept in a directory called alert_audit. I am using "tail" to see the logs that are coming in, but I only need logs that contain the IP address 10.249.185. or 10.247.231.
Here is the command I have, but it pulls all IP... (3 Replies)
Discussion started by: robertson1995
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7. UNIX for Dummies Questions & Answers
Hi -- I'm looking to write to a file after piping output from tail -f through to grep:
#write to a file for all lines with "searchtext" within in error_log:
Expand|Select|Wrap|Line Numbers
tail -f /var/error_log | grep searchtext > output.txt
The above command... (2 Replies)
Discussion started by: ndedhia1
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8. Shell Programming and Scripting
Hi
I have a file which is updated very frequently.
Where in i wanted to use tail -f command in the script and wanted to grep for a particular word.
But the issue is when i use tail -f filename|grep "word" ...
it will show me blank until the word is found in the real time. if it shows... (13 Replies)
Discussion started by: nikhil jain
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9. UNIX for Dummies Questions & Answers
hi guys,
I perform a sort of monitoring. I have a server running and with
tail -f | grep "Searchstring"I monitor the log-file for recent specific entries. This is ok and works fine.
Now, in addition I want to have my search results not posted into the shell but into a file. I tried:
tail... (3 Replies)
Discussion started by: LaUs3r
3 Replies
10. Shell Programming and Scripting
Good Morning,
i ran into some trouble this morning while 'improving' my monitoring stuff. i would like to get a warning when the number of mails sent (outbound) by postfix is above a certain number. so far, so easy. to test that i simply put
cat /var/log/mail.info | grep 'to=<' | grep -v -e... (1 Reply)
Discussion started by: Mike
1 Replies
LEARN ABOUT OPENDARWIN
nohup
NOHUP(1) BSD General Commands Manual NOHUP(1)
NAME
nohup -- invoke a utility immune to hangups
SYNOPSIS
nohup [--] utility [arguments]
DESCRIPTION
The nohup utility invokes utility with its arguments and at this time sets the signal SIGHUP to be ignored. If the standard output is a ter-
minal, the standard output is appended to the file nohup.out in the current directory. If standard error is a terminal, it is directed to
the same place as the standard output.
Some shells may provide a builtin nohup command which is similar or identical to this utility. Consult the builtin(1) manual page.
ENVIRONMENT
The following variables are utilized by nohup:
HOME If the output file nohup.out cannot be created in the current directory, the nohup utility uses the directory named by HOME to create
the file.
PATH Used to locate the requested utility if the name contains no '/' characters.
DIAGNOSTICS
The nohup utility exits with one of the following values:
126 The utility was found, but could not be invoked.
127 The utility could not be found or an error occurred in nohup.
Otherwise, the exit status of nohup will be that of utility.
SEE ALSO
builtin(1), csh(1), signal(3)
STANDARDS
The nohup utility is expected to be IEEE Std 1003.2 (``POSIX.2'') compatible.
BUGS
Two or more instances of nohup can append to the same file, which makes for a confusing output.
BSD
July 19, 2001 BSD