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Commands tagged error

Commands tagged error from sorted by
Terminal - Commands tagged error - 6 results
/usr/bin/tail -fn0 /path/to/apache_error.log | while read line; do /usr/local/bin/growlnotify --title "Apache Notice" --message "$line"; done &
2013-01-22 05:25:41
User: jhyland87
Functions: read
Tags: tail while error apache growl apache2 while loop growlnotify
0
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Use Growl to monitor your local apache error logs for new messages

Simply add this to whatever apache startup script you have, or if you are on a MAC, create a new automator application. This will show a pretty growl notification whenever theres a new Apache error log entry. Useful for local development

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cat file.txt > /dev/null
2012-06-26 18:34:12
User: ankush108
Functions: cat
Tags: error stdout messages stdou dev/null
0
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Suppress standard output using > /dev/null

This will be very helpful when you are debugging shell scripts, where

you don?t want to display the echo statement and interested in only

looking at the error messages. Similarly use 2> to supress error messages

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(trap 'true' ERR; exec <SEGFAULT_PRONE_PROGRAM>)
2011-07-25 02:30:52
User: h3xx
Functions: exec trap
Tags: trap script error
0
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Collect output from a segfaulting program and keep the script from dying

Crash Override, man!

Apparently the exec call tricks BASH into setting the output buffer size to 0 under the assumption that the system (or the calling shell) will handle the output buffering. trapping the ERR signal will stop the subshell from dying and sending the ERR signal to the main script--which will terminate immediately if it does--when the program fails.

The only problem is that the kernel will output a whole bunch of stack trace garbage directly to the console device once the process segfaults, so there's no way to prevent it from being output [that I know of].

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sudo awk '($9 ~ /404/)' /var/log/httpd/www.domain-access_log | awk '{print $2,$9,$7,$11}' | sort | uniq -c
2010-04-09 10:31:50
User: ninjasys
Functions: awk sort sudo uniq
Tags: log error apache
1
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Display error pages in report format

This command will return a full list of Error 404 pages in the given access log. The following variables have been given to awk

Hostname ($2), ERROR Code ($9), Missing Item ($7), Referrer ($11)

You can then send this into a file (>> /path/to/file), which you can open with OpenOffice as a CSV

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grep -2 -iIr "err\|warn\|fail\|crit" /var/log/*
2009-06-17 19:41:04
User: miketheman
Functions: grep
Tags: Linux log grep error
6
Up
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Get all possible problems from any log files

Using the grep command, retrieve all lines from any log files in /var/log/ that have one of the problem states

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perror NUMBER
2009-03-31 19:19:44
User: alperyilmaz
Tags: mysql perror error
1
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Explanation of system and MySQL error codes

perror should be installed if mysql-server package is installed

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