Commands by angelicawilson (0)

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Print a random 8 digit number

check open ports without netstat or lsof

Update zone file Serial numbers
Will edit *.db files in the same directory with todays date. Useful for doing a mass update to domains on a nameserver, adding spf records, etc. Looks for a string starting with 200 or 201 followed by 7 numbers, and replaces with todays date. This won't overwrite Ip's but i would still do some double checking after running this. Make sure your server's date is correct, otherwise insert your own serial number. $rndc reload should usually follow this command.

Install a basic FreeBSD system
Install a basic FreeBSD system on a distant server. I use this to install FreeBSD on servers that can only boot a Linux rescue system. This sytem loads on ram when booted, so it is possible to install freely. You can even install on ZFS root !

Create named LUKS encrypted volume
You need to be root to do this. So check the command before running it. You enter the same password for Enter LUKS passphrase: Verify passphrase: Enter passphrase for /dev/loopn: ___ You can then copy the .img file to somewhere else. Loop it it with losetup -f IMAGENAME.img and then mount it with a file manager (eg nemo) or run mount /dev/loopn /media/mountfolder Acts similar to a mounted flash drive

multiline data block parse and CSV data extraction with perl
extract data in multiline blocks of data with perl pattern matching loop

Create backup copy of file, adding suffix of the date of the file modification (NOT today's date)
If your `date` command has `-r` option, you don't need `stat`

journalctl -f
a tail -f variant of systemd journal. Follow the most recent updates or if events are appended to the journal

Real full backup copy of /etc folder
Yes, rsync(1) supports local directories. And, should anything change, it's trivial to run the command again, and grab only the changes, instead of the full directory.

Enable color pattern match highlighting in grep(1)
This will affect all invocations of grep, even when it is called from inside a script.


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