Commands by rthemocap

Commands by rthemocap (6)

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lsof - cleaned up for just open listening ports, the process, and the owner of the process
This is sample output - yours may be different.
-1

alias oports="echo -e "User:\tCommand:\tPort:\n----------------------------" && lsof -i 4 -P -n | awk '/LISTEN/ {print $3, $1, $9}' | sed 's/ [a-z0-9\.\*]*:/ /' | sort -u -k 3 -n | xargs printf '%-10s %-10s %-10s\n'"

rthemocap · 2011-08-04 16:39:04 1
bash alias for sdiff: differ

Often I need to diff two files and want the output side by side for ease of reading and I don't want to see common lines. With this alias I just: differ file1 file2
This is sample output - yours may be different.
0

alias differ='sdiff --suppress-common-lines $1 $2'

rthemocap · 2010-10-12 16:38:34 1
Use the last command's output as input to a command without piping and bind to it to a key sequence in bash.

This is similar to using `!!` or In bash 4.1 it seems you can bind directly to a shell command, but I'm not running that version. Show Sample Output
This is sample output - yours may be different.
```
~: which tcptraceroute                                                    
/usr/bin/tcptraceroute  
                                                                                   
~: ls -al `fc -s`                          
which tcptraceroute
-rwxr-xr-x. 1 root root 38320 2009-07-28 19:10 /usr/bin/tcptraceroute 
```
0

bind '"\C-h": "\`fc\ \-s\`"'

rthemocap · 2010-08-16 17:58:16 0
Find default gateway
This is sample output - yours may be different.
7

ip route | awk '/default/{print $3}'

rthemocap · 2010-08-10 21:16:40 1
Recursive grep of all c++ source under the current directory
This is sample output - yours may be different.
1

find . -name '*.?pp' -exec grep -H "string" {} \;

rthemocap · 2010-07-14 15:10:23 2
Show the 1000*1000 and 1024*1024 size of HDs on system
This is sample output - yours may be different.
1

awk '/d[a-z]+$/{print $4}' /proc/partitions | xargs -i sudo hdparm -I /dev/{} | grep 'device size with M'

rthemocap · 2010-03-02 20:06:03 1

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a find and replace within text-based files

using find's exec option instead of a for loop and using sed's -i option for inplace replacement. no need to do the file swap.

Show memory usage of all docker / lxc containers (works on CoreOS)

Replace the content of an XML element

Replaces "650" with "999" in simple.xml. xml used - http://www.w3schools.com/xml/simple.xml

zsh suffix to inform you about long command ending

make, find and a lot of other programs can take a lot of time. And can do not. Supppose you write a long, complicated command and wonder if it will be done in 3 seconds or 20 minutes. Just add "R" (without quotes) suffix to it and you can do other things: zsh will inform you when you can see the results. You can replace zenity with other X Window dialogs program.

Find usb device in realtime

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

Remove space and/or tab characters at the end of line

The command removes all space and/or tabulation characters preceding new line

a function to find the fastest DNS server

http://public-dns.info gives a list of online dns servers. you need to change the country in url (br in this url) with your country code. this command need some time to ping all IP in list.

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"

Find duplicate UID in /etc/passwd

You can use only awk

Recover deleted Binary files

The above command assumes the lost data is on /dev/sda and you previously issued the following command to mount _another_ disk or partition (/dev/sdb1) on /recovery $sudo mount /dev/sdb1 /recovery If you don't do this, the data could be overwrited! foremost is a very powerful carving tool. By default foremost recovers all known file types. If you want to reduce the amount of files that are recovered you can specify the file type you are looking for. Read the man page to know the available file types. i.e to recover JPEG pictures append to foremost the switch -tjpg

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