Commands by bendavis78

Commands by bendavis78 (2)

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Get list of servers with a specific port open

Change the -p argument for the port number. See "man nmap" for different ways to specify address ranges. Show Sample Output
This is sample output - yours may be different.
```
Host: 192.168.1.138 ()	Ports: 80/open/tcp//http///
Host: 192.168.1.139 ()	Ports: 80/open/tcp//http///
Host: 192.168.1.142 ()	Ports: 80/open/tcp//http///
```
19

nmap -sT -p 80 -oG - 192.168.1.* | grep open

bendavis78 · 2009-02-11 17:47:27 10
Add your public SSH key to a server in one command

Just run the command, type your password, and that's the last time you need to enter your password for that server. This assumes that the server supports publickey authentication. Also, the permissions on your home dir are 755, and the permissions on your .ssh dir are 700 (local and remote).
This is sample output - yours may be different.
14

cat .ssh/id_rsa.pub | ssh hostname 'cat >> .ssh/authorized_keys'

bendavis78 · 2009-02-11 17:40:12 10

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Processor / memory bandwidthd? in GB/s

Read 32GB zero's and throw them away. How fast is your system?

firefox: how many eat?

Lists installed kernels

no need for rpm, no need for piping to another command. also no real fu but lacking in unnecessary complexity and distro specific commands.

Use nroff to view the man pages

Using nroff , it is possible to view the otherwise garbled man page with col command.

Suspend, background, and foreground a process

1. Start a process, such as 'top' command 2. # suspend process {ctrl-Z} 3. # background process bg 4. # list all backgrounded jobs jobs 5. # bring it back to foreground fg

Rename file to same name plus datestamp of last modification.

FILENAME=nohup.out mv -iv $FILENAME{,.$(stat -c %Y $FILENAME)} does it help ?

Re-emerge all ebuilds with missing files (Gentoo Linux)

Revised approach to and3k's version, using pipes and read rather than command substitution. This does not require fiddling with IFS when paths have whitespace, and does not risk hitting command-line size limits. It's less verbose on the missing files, but it stops iterating at the first file that's missing, so it should be definitely faster. I expanded all the qlist options to be more self-describing.

Notepad in a browser (type this in the URL bar)

It doesn't save your notes, but it's great for jotting something down quickly.

Set audible alarm when an IP address comes online

I'd rather this one on Gnome, as I'm used to be listening some music while working. I've even created a bash function which receives ADDRESS as parameter.

find out which directories in /home have the most files currently open

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