Commands by mrman

Commands by mrman (2)

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apt-get upgrade with bandwidth limit

Trickle is here: http://monkey.org/~marius/pages/?page=trickle Trickle is a simple bandwidth limiter
This is sample output - yours may be different.
1

trickle sudo apt-get update -y

mrman · 2011-02-15 02:05:37 4
Find artist and title of a music cd, UPC code given (first result only)

Changed wget to curl and it doesn't create a file anymore. Show Sample Output
This is sample output - yours may be different.
```
Iron Maiden - Killers
```
0

curl http://www.discogs.com/search?q=724349691704 2> /dev/null | grep \/release\/ | head -2 | tail -1 | sed -e 's/^<div>.*>$.*$<\/a><\/div>/\1/'

mrman · 2011-01-30 23:45:50 4

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read unixtimestamp with festival

you will hear how many seconds since 1.1.1970 in english words with billions, millions and thousands. this is very useful, if you want to get over to use the unixtimestamp instead of the 24 hour clock in your dayly life

vimdiff local and remote files via ssh

Lifted from http://linux.spiney.org/remote_diff_with_vim_and_ssh which points out credits for the inspiration.

check open ports without netstat or lsof

Change SSH RSA passphrase

Protects your secret identity with a passphrase. OSX 10.6 automatically does key forwarding and can store the passphrase in the keychain. For other OSes, use ssh -A or set ForwardAgent in ssh_config to enable forwarding. Then use ssh-agent/ssh-add.

get a random 0/1, use it for on/off, yes/no

use it to add a random boolean switch to your script

Restrict the use of dmesg for current user/session

Linux offers an interesting option to restrict the use of dmesg. It is available via /proc/sys/kernel/dmesg_restrict. You can check the status with: $ cat /proc/sys/kernel/dmesg_restrict Alternatively you can use sysctl: $ sudo sysctl -w kernel.dmesg_restrict=1 To make your change persistent across reboot, edit a fille in /etc/sysctl.d/.

list block devices

Shows all block devices in a tree with descruptions of what they are.

Execute a file in vim with the #!/bin/interpreter in the first line

Check difference between two file directories recursively

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"

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