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BASH code convert CIDR to Netmask or vice versa

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  • quad3datwork -

    Posted the thread BASH code convert CIDR to Netmask or vice versa.

    Thread
    Recently working on a BASH script requires checking the netmask bits. Honestly I couldn't write something simple to do it... instead, I found this page gave couple code snippets on how to do it. Two functions, very simple but complex looking…
  • quad3datwork -

    Posted the thread Postfix send through SMTP relay.

    Thread
    This allows Postfix to send emails through a third party SMTP relay like Gmail. I know on Debian based system you need libsasl2-modules installed. First create a SASL credential file, /etc/postfix/sasl_passwd: Source Code (1 line) Generate a map…
  • quad3datwork -

    Posted the thread Product photography using Ikea $8 LACK side table.

    Thread
    Pretty neat and cheap idea. If you need wider shooting space I don't see why can't you put two of those together! youtu.be/5k5vmAGP7vY
  • quad3datwork -

    Posted the thread What's your arsenal look like?.

    Thread
    I don't have much... - S&W M&P Shield 9 - Mossberg Maverick 88 - Daniel Defense M4v4 - Zastava PAP M92 I don't have any accessories on any of my firearms neither. Planning for some RDS and flashlight though... at least on the M4.
  • quad3datwork -

    Posted the thread Sync folder outside Dropbox.

    Thread
    Due to how the way I setup my photo editing process... I have to sync processed pictures outside my Dropbox. I also use Dropbox to share completed photos to my clients. But instead of having two copies of same photos in different locations, you can use…
  • quad3datwork -

    Posted the thread Backup Dell SonicWALL configuration via CLI.

    Thread
    At work we have multiple Dell SonicWALL network devices. I've written an Expect plus a BASH script that can be crontab to auto backup configurations. Just need to add/substract the proper associative array format in that BASH script depending on how…
  • quad3datwork -

    Posted the thread Intro.

    Thread
    Hello, I am the administrator of SysAdmin.xyz. The purpose of this site is mostly personal. What I meant by personal is this is like a personal scratch pad. I work in IT. When I resolve an issue... I'll jog it down in this website. For future…
  • quad3datwork -

    Posted the thread Testing Chinese language.

    Thread
    問卷調查發現,男女對於拍照美感認知大不相同,有將近40%男性認為自己的拍照技巧極佳、超過2成認為拍照沒有美醜之分,只是記錄當下;然而卻有超過77.3%的女性認為男友拍照技術不佳,更有近4成5的女性敢怒不敢言,只能默默忍受並期盼另一半有進步的一天。