Commands tagged host sorted by votes

Commands tagged host (15)

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Performs a reverse DNS lookup, variants include: nslookup 74.125.45.100 or: host 74.125.45.100 Show Sample Output

dig -x 74.125.45.100

postrational · 2009-09-28 15:13:34 3

Get just the IP for a hostname

has the benefit of being a bit more cross-platform.
This is sample output - yours may be different.
3

getent hosts google.com | awk '{print $1}'

depesz · 2010-11-03 12:02:05 6
Get just the IP for a hostname
This is sample output - yours may be different.
2

dig hostname a +short

bartman75 · 2010-10-30 19:25:55 3
Send e-mail if host is 'dead' or not reachable

Cleaner with a mailto assignment in crontab (if the command fails you get an email): MAILTO=admin@example.com 10,30,50 * * * * ping -q -c1 -w3 192.168.0.14 >/dev/null
This is sample output - yours may be different.
2

10,30,50 * * * * ping -c1 -w3 192.168.0.14 >/dev/null

bashrc · 2012-02-06 14:54:15 3
Ruby - nslookup against a list of IP`s or FQDN`s

This version uses host and no ruby.
This is sample output - yours may be different.
1

while read n; do host $n; done < list

putnamhill · 2009-12-07 18:03:20 4
Change host name

With sed you can replace strings on the fly.
This is sample output - yours may be different.
1

sed -i 's/oldname/newname/' /etc/hosts /etc/hostname

adria · 2014-11-02 22:03:48 24
DNS cache snooping

DNS cache snooping
This is sample output - yours may be different.
0

for i in `cat names.txt`; do host -r $i [nameserver]; done

hemanth · 2009-08-22 09:26:31 3
Perform a reverse DNS lookup
This is sample output - yours may be different.
0

dig +short -x 127.0.0.1

encoded · 2014-08-07 20:42:50 6
Perform a reverse DNS lookup

Short and concise output appropiate for scripts. Show Sample Output
This is sample output - yours may be different.
```
$ getent hosts 128.142.165.72 
128.142.165.72  vocms202.cern.ch
```
0

getent hosts <host>

lulingar · 2014-08-19 13:54:56 8
Get just the IP for a hostname

Get just the IP address for a given hostname. For best results, make this a function in your shell rc file so that it can be used for things like traceroute: Titus:~$ traceroute `getip foo.com` traceroute to 64.94.125.138 (64.94.125.138), 64 hops max, 52 byte packets Show Sample Output
This is sample output - yours may be different.
```
Titus:~$ host foo.com|grep "has address "|cut -d" " -f4
64.94.125.138
```
-1

host foo.com|grep " has address "|cut -d" " -f4

dinomite · 2010-10-29 17:01:37 4
Get just the IP for a hostname
This is sample output - yours may be different.
-1

gethostip -d hostname

ashayh · 2010-10-29 18:54:46 3
Get just the IP for a hostname
This is sample output - yours may be different.
-1

host google.com|awk '{print $NF}'

aitilang · 2010-11-03 11:15:30 3
monitor when target host will be up
This is sample output - yours may be different.
-1

while true; do date; ssh <YOUR HOST HERE> "echo" && echo "HOST UP" && break; sleep 60; done

unixmonkey11685 · 2011-05-29 19:54:16 3
Make alert if host is 'dead' or not reachable

Every 20 minutes ping host with IP address 192.168.0.14. If it's not 'alive' or not reachable, then display something eye-catching (here xeyes) on the desktop. Hint for newbies: edit crontab with crontab -e
This is sample output - yours may be different.
-2

10,30,50 * * * * ping -q -c1 -w3 192.168.0.14 | grep '1 received' - || env DISPLAY=:0 xeyes

knoppix5 · 2012-02-06 09:40:11 3
Send e-mail if host is 'dead' or not reachable

Every 20 minutes test if host with IP 192.168.0.14 is 'dead' or not reachable. The line should be put in your crontab file.
This is sample output - yours may be different.
-4

10,30,50 * * * * ping -q -c1 -w3 192.168.0.14 | grep '1 received' - || mail -ne -s'Host 192.168.0.14 not reachable' admin@example.com

knoppix5 · 2012-02-06 10:42:46 3

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sort list of email addresses by domain.tld

email random list can be created here: https://www.randomlists.com/email-addresses

Watch and cat the last file to enter a directory

Great for watching things like Maildir's or any other queue directory.

Rotate a video file by 90 degrees CW

Search specified $TEXT1 and Replace that by specified arg ($TEXT2)

Search for a string in all files recursively

Simulate typing

grep for tabs without using Ctrl-V trick

-P tells grep to use perl regex matches (only works on the GNU grep as far as I know.)

Using NMAP to check if a port is open or close

Using NMAP to check to see if port 22(SSH) is open on servers and network devices.

String to binary

Cool but useless.

Disable sleep mode via cli and systemd (Centos, Debian Ubuntu?)

This causes computer to never power off or go into sleep mode. Disables sleep mode linux.

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Commands tagged host (15) the last day the last week the last month all time sorted by date votes

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Commands tagged host (15)

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