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)
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)
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)
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)
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 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)
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)
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)
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)
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 HPUX
uniq
uniq(1) General Commands Manual uniq(1)NAME
uniq - report repeated lines in a file
SYNOPSIS
fields] chars] [input_file [output_file]]
DESCRIPTION
reads the input text file input_file, comparing adjacent lines, and copies the result to output_file. If input_file is not specified, the
standard input and standard output are used. If input_file is specified, but output_file is not, results are printed to standard output.
input_file and output_file must not be the same file.
Line-Comparison Options
recognizes the following options when comparing adjacent lines:
Print those lines that are repeated in the original file.
Print copy only of each repeated line in the input file.
Generate an output report in default style
except that each line is preceded by a count of the number of times it occurred. If this option is specified, the and
options are ignored if either or both are also present.
If none of the options or are present, prints the results of the union of the and options, producing a copy of the original input file with
the second and succeeding copies of any repeated lines removed. (Note that repeated lines must be adjacent in order to be found -- see
sort(1)).
Field-Skip Options
Two options are provided for skipping an initial portion of each line when making comparisons:
Ignore the first
fields fields, together with any blanks before each. fields is a positive decimal integer. A field is defined as a
string of non-space, non-tab characters separated by tabs and/or spaces from its neighbors.
Ignore the first
chars characters. chars is a positive decimal integer. Each line in the input is assumed to be terminated with a
new line character for purposes of comparison. Fields are skipped before characters.
EXTERNAL INFLUENCES
Environment Variables
must be equal to the value it had when the input files were sorted.
determines the interpretation of text within files as single- and/or multi-byte characters, and defines a space character when the or
option is used.
determines the language in which messages are displayed.
If or is not specified in the environment or is set to the empty string, the value of is used as a default for each unspecified or empty
variable. If is not specified or is set to the empty string, a default of "C" (see lang(5)) is used instead of If any internationalization
variable contains an invalid setting, behaves as if all internationalization variables are set to "C". See environ(5).
International Code Set Support
Single- and multi-byte character code sets are supported.
RETURN VALUE
Exit values are:
0 Successful completion.
>0 Error condition occurred.
AUTHOR
was developed by OSF and HP.
SEE ALSO comm(1), sort(1).
STANDARDS CONFORMANCE uniq(1)