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 OPENDARWIN
lipo
LIPO(1) General Commands Manual LIPO(1)NAME
lipo - create or operate on fat files
SYNOPSIS
lipo [-info] [-detailed_info] [-arch arch_type input_file] ... [ input_file] ... [-create] [-thin arch_type] [-replace arch_type file-
name] ... [-remove arch_type] ... [-extract arch_type] ... [-extract_family arch_type] ... [-output output_file] [-segalign arch_type
value] ...
DESCRIPTION
The lipo command creates or operates on ``fat'' (multi-architecture) files. It only ever produces one output file, and never alters the
input file. The operations that lipo performs are: listing the architecture types in a fat file; creating a single fat file from one or
more input files; thinning out a single fat file to one specified architecture type; and extracting, replacing, and/or removing architec-
tures types from the input file to create a single new fat output file.
Only one option can be specified, with the exception of -arch, -output, and -segalign, which are used in combination with other options.
The input_file argument is required, and only the -create option allows more than one input_file to be specified. The -output flag must be
used, except with the -info and -detailed_info flags.
The arch_type arguments may be any of the supported architecture names listed in the man page arch(3)exceptforVAXandMips.
OPTIONS -info Briefly list the architecture types in the input fat file (just the names of each architecture).
-detailed_info
Display a detailed list of the architecture types in the input fat file (all the the information in the fat header, for each archi-
tecture in the file).
-arch arch_type input_file
Tells lipo that input_file contains the specified architecture type. The -arch arch_type specification is unnecessary if input_file
is an object file, a fat file, or some other file whose architecture(s) lipo can figure out.
-output output_file
Specifies its argument to be the output file.
-create
Take the input files (or file) and create one fat output file from them.
-thin arch_type
Take one input file and create a thin output file with the specified arch_type.
-replace arch_type file_name
Take one fat input file; in the output file, replace the arch_type contents of the input file with the contents of the specified
file_name.
-remove arch_type
Take one fat input file and remove the arch_type from that fat file, placing the result in the output file.
-extract arch_type
Take one fat input file and copy the arch_type from that fat file into a fat output file containing only that architecture.
-extract_family arch_type
Take one fat input file and copy all of the arch_types for the family that arch_type is in from that fat file into an output file
containing only those architectures. The file will be thin if only one architecture is found or fat otherwise.
-segalign arch_type value
Set the segment alignment of the specified arch_type when creating a fat file containing that architecture. value is a hexadecimal
number that must be an integral power of 2. This is only needed when lipo can't figure out the alignment of an input file (cur-
rently not an object file), or when it guesses at the alignment too conservatively. The default for files unknown to lipo is 0
(2^0, or an alignment of one byte), and the default alignment for archives is 4 (2^2, or 4-byte alignment).
SEE ALSO arch(3)Apple Computer, Inc. October 23, 1997 LIPO(1)