Commands by lpanebr

Commands by lpanebr (4)

sorted by

find potentially malicious PHP commands used in backdoors and aliked scripts

Searched strings: passthru, shell_exec, system, phpinfo, base64_decode, chmod, mkdir, fopen, fclose, readfile Since some of the strings may occur in normal text or legitimately you will need to adjust the command or the entire regex to suit your needs.
This is sample output - yours may be different.
0

find ./public_html/ -name \*.php -exec grep -HRnDskip "$passthru\|shell_exec\|system\|phpinfo\|base64_decode\|chmod\|mkdir\|fopen\|fclose\|readfile$ *(" {} \;

lpanebr · 2013-04-03 12:42:19 2
Convert multiple images to multi page PDF (with specific page order)

Creates a PDF from multiple images. One page per image. If you want a specific arbitrary order you can use {1,3,5,10,12} * you may use jpg, tif etc ** if you do use jpg images you might want to add "-compress Zip" as suggested below to prevent from having the images from being re-compressed.
This is sample output - yours may be different.
0

convert {1..12}.png MyMultiPageFile.pdf

lpanebr · 2013-03-26 01:30:38 6
List available upgrades from apt (package names only)

Usefull if you only want to see the package names, or if you want to use them in a script.
This is sample output - yours may be different.
1

apt-get -s upgrade | awk '/Inst.+/ {print $2}'

lpanebr · 2013-03-25 21:23:11 0
List total available upgrades from apt without upgrading the system

This let's you find out the total packages that have available upgrades. Usefull if you want to check or show the total available upgrades on your system. Show Sample Output
This is sample output - yours may be different.
```
65 package updates are available
```
3

apt-get -s upgrade | awk '/[0-9]+ upgraded,/ {print $1 " package updates are available"}'

lpanebr · 2012-03-29 17:04:32 0

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Does a full update and cleaning in one line

Find usb device in realtime

Using this command you can track a moment when usb device was attached.

burn initial session on a growable DVD using growisofs

replace "directory name to burn on DVD" with actual directory name that you want to copy on DVD

Which processes are listening on a specific port (e.g. port 80)

swap out "80" for your port of interest. Can use port number or named ports e.g. "http"

Use bash history with process substitution

Bash has a great history system of its commands accessed by the ! built-in history expansion operator (documented elsewhere on this site or on the web). You can combine the ! operator inside the process redirection

continuously check size of files or directories

very handy if you copy or download a/some file(s) and want to know how big it is at the moment

list files recursively by size

Convert seconds to [DD:][HH:]MM:SS

Converts any number of seconds into days, hours, minutes and seconds. sec2dhms() { declare -i SS="$1" D=$(( SS / 86400 )) H=$(( SS % 86400 / 3600 )) M=$(( SS % 3600 / 60 )) S=$(( SS % 60 )) [ "$D" -gt 0 ] && echo -n "${D}:" [ "$H" -gt 0 ] && printf "%02g:" "$H" printf "%02g:%02g\n" "$M" "$S" }

check open ports without netstat or lsof

Get your external IP address if your machine has a DNS entry

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