Archive for December, 2010
December 28th, 2010
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December 28th, 2010
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Popular Firefox is not a light browser as many thinks, with number of ADDONs loaded and multiple tab opened it can eat up all the available memory. More and more you open tab/website more your memory is consumed and progressively stir your processor.
But by this memory tune-up you can improve performance of Firefox. Please follow steps:-
Open firefox. To config firefox at address bar type about:config
1. Limit Capacities of Cache Memory
The more and more you opens the web/tabs, Your computer memory progressively used up. To limit it add new option: browser.cache.memory.capacity.
- Right Click in the Firefox Windows, New > Integer. Type “browser.cache.memory.capacity” then Press Enter,
- Put into number 2048. 2048 here mean using maximal memory cache only 2 Mb.
2. Limit Capacities of cache history
- "browser.sessionhistory.max_total_viewers", alter value -1 to 3.
3. Limit Capacities of Cache Disk
- "browser.cache.disk.capacity", alter the value 50000 become 2000
4. Disable unused extension/addons
- Disable Add-Ons you which do not use.
5. Disable download history
- Select Tools menu > Options > Privacy. Then uncheck at “Remember what I’ve downloaded”.
December 21st, 2010
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Here are some of my Linux bash shell findings, I hope it is good for everyone
Find some text in current folder, sub-folders and files:-
1 | find . | xargs grep 'string_to_find' |
Getting current time from some time server:-
1 | cat < /dev/tcp/time.nist.gov/13 |
Convert Unix Timestamp (aka Epoch):-
1 | date -d @1292946804 |
2 | Tue Dec 21 20:53:24 2010 |
Downloading a URL:-
1 | exec 5<>/dev/tcp/www.net.cn/80 |
2 | echo -e "GET / HTTP/1.0\n" >&5 |
3 | cat <&5 |
Sending Data over network:-
1 | cat /etc/passwd > /dev/tcp/example.com/10000 |
TCP Port Checker:-
1 | (echo >/dev/tcp/127.0.0.1/23) 2>/dev/null \ |
2 | && echo open || echo close |
And
1 | cat < /dev/tcp/localhost/25 |
Smallest Port Scanner:-
1 | #!/bin/sh |
2 | # Usage:>$PortScanner.sh hostname_or_ip startport endport |
3 | for ((i=$2; $i <=$3; i++)); do |
4 | echo >/dev/tcp/$1/$i && echo $i/tcp Port Open; |
5 | done 2>/dev/null |
Making File Backup when working on it
1 | cp portscanner.sh{,.bak} |
“!$” Reusing Last command arguments
1 | mkdir /path/to/exampledir |
2 | cd !$ |
Taking Folder Backup with rsync (local)
1 | rsync -Aax myfolder/ myfolder-dirbkp_`date +”%Y%m%d”`/ |
Deleting all files/Folder except some (in this example data and config folder will not delete)
1 | ls | grep -v ‘(data)|(config)’ | xargs rm -r |
Will add more tricks laters…..
