Commands by jcoll (2)

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

Get Dell Service Tag Number from a Dell Machine
This will give you the Dell Service tag number associated with your machine. Incredibly useful when you need that number for tech support or downloads.

Convert spaces in file names to underscores

Dump root ext3 fs over ssh
...can do similar w/ tar, dd, xfsdump, e2fsdump, etc.

Copy via tar pipe while preserving file permissions (cp does not!; run this command with root!)
cp options: -p will preserve the file mode, ownership, and timestamps -r will copy files recursively also, if you want to keep symlinks in addition to the above: use the -a/--archive option

Check general system error on AIX
Check general system error on AIX

Creates a proxy based on tsocks.

Backup a directory structure
Copies a directory structure from /home/ to /backups/home (notice that the destination does not have a trailing slash)

watch iptables counters
This will allow you to watch as matches occur in real-time. To filter out only ACCEPT, DROP, LOG..etc, then run the following command: watch 'iptables -nvL | grep -v "0 0" && grep "ACCEPT"' The -v is used to do an inverted filter. ie. NOT "0 0"

Create a temporary file
To create directory, use: $ tempdir=$(/bin/mktemp -d)


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