Shortcuts

Which site error log was triggered?

for each in $(find  /home/USER/public_html/ -type f -name "*error*log*"); do ls $each && tail -n1 $each && echo " "; done

Skip the first 3 columns, good for seeing errors in a given timeframe:

grep '12-Feb-2014 12:' /home/$USER/public_html/error_log | awk '{ $1=""; $2=""; $3=""; print $0 }' | sort | uniq -c

Another way to search by date:

for each in $(find  /home/USER/public_html/ -type f -name "*error*log*"); do grep -H 2015 $each | tail -n1; done

Apache

Connections Going to WP Abuse

By Domain:

apachectl fullstatus | grep 'xmlrpc.php\|wp-login.php'  | awk '{print substr($0, index($0,$12))}' | awk -F ":" '{print $1, $2}' | awk '{print $3, $5, $6}' | sort  | uniq -c | sort -k2

By Raw Hits:

apachectl fullstatus | grep 'xmlrpc.php\|wp-login.php'  | awk '{print substr($0, index($0,$12))}' | awk -F ":" '{print $1, $2}' | awk '{print $3, $5, $6}' | sort  | uniq -c | sort -nr

.htaccess in /home/user/

find /home/*/ -maxdepth 1 -name .htaccess

Print only the rule IDs, hostnames, and URIs of ModSec violations, then sort them:

grep  $IPADDRESS /usr/local/apache/logs/error_log  | grep 'Tue Jul 28' | grep ModSec  |  awk -F '\\[line ' '{print $2}' | awk -F '\\[unique_id' '{print $1}' | awk '{print $2, $3, $(NF-3), $(NF-2),  $(NF-1), $(NF)}' | sort | uniq -c

PHP

Custom php.ini values on suphp sites

for i in $(find /home*/*/public_html -name .htaccess -not -name \*_vti_* -exec grep -iH suphp_ {} \; | awk -F" " '{ print $2"/php.ini" }' | sort | uniq); do echo $i; grep 'max_execution_time\|max_input_time\|memory_limit' $i; done

Also, check for .htaccess files in the userdir, not just the docroot.

Listing Files

List files with numbers instead of usernames:

ls -l | awk '{print $3, $9}' | grep '^[0-9]'

LoadMon List

Old old school, but keeping this just in case:

cd /root/loadMon && ls -lahtr | rev | cut -d' ' -f1 | rev | grep -v './'

LoadWatch

Old school grep

grep -B 1 'Loadwatch tripped' /root/loadwatch/checklog | tail -n15

New school

grep

grep '##' /var/log/loadwatch/check.log | tail

Only double-digit or higher load averages

grep '##' /var/log/loadwatch/check.log | grep -E 'load\[[0-9]{2,}'

Which cPanel accounts had non-FPM sites that were hit the most

grep php-cgi /var/log/loadwatch/2019-03-05.11.39.txt | awk '{print $NF}' | cut -d '/' -f3 | sort | uniq -c | sort -rn

Sed

Find and replace a line:

sed -i 's/foo/bar/g' FILENAME

Search for terms at the beginning of each line with or without whitespace:

sed 's/^foo *= *1/bar=0/'

Append a new line after a search result:

sed  '/RESULT/ a NEWLINE'

String multiple commands together:

sed -e 's/^foo *= *1/#foo=1/; /#foo=1/ a bar=0'

Replace // with / easily:

sed 's_//_/_g'

Delete all lines with --:

cat FILENAME | sed '/--/d'

Replace the first space in a line with an @ symbol:

sed 's/ /@/'

Grab a single line from a log file:

sed -n '<number>{p;q}' <file>

So for line 46 in main.php:

sed -n '46{p;q}' main.php