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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Get decimal ascii code from character

printf treats first char after single ' as numeric equivalent

Show your current network interface in use

Prefix command output with duration for each line

Prefixes each output line with time between it and the previous one.

Indent a one-liner.

I often write a one-liner which I want to use later in a script.

What is my ip?

Find usb device in realtime

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

Get AWS temporary credentials ready to export based on a MFA virtual appliance

You might want to secure your AWS operations requiring to use a MFA token. But then to use API or tools, you need to pass credentials generated with a MFA token. This commands asks you for the MFA code and retrieves these credentials using AWS Cli. To print the exports, you can use: `awk '{ print "export AWS_ACCESS_KEY_ID=\"" $1 "\"\n" "export AWS_SECRET_ACCESS_KEY=\"" $2 "\"\n" "export AWS_SESSION_TOKEN=\"" $3 "\"" }'` You must adapt the command line to include: * $MFA_IDis ARN of the virtual MFA or serial number of the physical one * TTL for the credentials

List all duplicate directories

Very quick! Based only on the content sizes and the character counts of filenames. If both numbers are equal then two (or more) directories seem to be most likely identical. if in doubt apply: $ diff -rq path_to_dir1 path_to_dir2 AWK function taken from here: http://stackoverflow.com/questions/2912224/find-duplicates-lines-based-on-some-delimited-fileds-on-line

create directory and set owner/group/mode in one shot

Send pop-up notifications on Gnome

The title is optional. Options: -t: expire time in milliseconds. -u: urgency (low, normal, critical). -i: icon path. On Debian-based systems you may need to install the 'libnotify-bin' package. Useful to advise when a wget download or a simulation ends. Example: $ wget URL ; notify-send "Done"

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