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 7
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 4
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 4
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 5
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 26
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 7
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 9
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 5
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 4
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 4
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 4
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 4
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 4

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df without line wrap on long FS name

-P uses the POSIX output format, which makes information on each file system always printed on exactly one line. "column -t" makes a table from the input.

Find files that are older than x days

Find files that are older than x days in the working directory and list them. This will recurse all the sub-directories inside the working directory. By changing the value for -mtime, you can adjust the time and by replacing the ls command with, say, rm, you can remove those files if you wish to.

Change/Modify timestamp interactively

Show git branches by date - useful for showing active branches

This fixes a bug found in the other scripts which fail when a branch has the same name as a file or directory in the current directory.

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Convert seconds into minutes and seconds

This is a very simple way to input a large number of seconds and get a more useful value in minutes and seconds. Avoids useless use of echo.

Block the 6700 worst spamhosts

The above url contains over 6700 of the common ad websites. The command just pastes these into your /etc/hosts.

Chmod all directories (excluding files)

+ at the end means that many filenames will be passed to every chmod call, thus making it faster. And find own {} makes sure that it will work with spaces and other characters in filenames.

autorun program when logon Windows XP

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Commands tagged host (15)

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