118 lines
1.5 KiB
Markdown
118 lines
1.5 KiB
Markdown
# Reachable
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### ping
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```bash
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❯ ping -c1 -W1 -q maboiteverte.fr
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PING maboiteverte.fr (212.227.191.167): 56 data bytes
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--- maboiteverte.fr ping statistics ---
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1 packets transmitted, 0 packets received, 100.0% packet loss
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# immédiat
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❯ echo $?
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0
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```
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```bash
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❯ ping -c1 -W1 -q clicclac.synology.me
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PING clicclac.synology.me (192.168.2.7): 56 data bytes
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--- clicclac.synology.me ping statistics ---
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1 packets transmitted, 0 packets received, 100.0% packet loss
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# immédiat
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❯ echo $?
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2
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```
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```bash
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❯ ping -c1 -W1 -q google.fr
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PING google.fr (216.58.213.67): 56 data bytes
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--- google.fr ping statistics ---
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1 packets transmitted, 1 packets received, 0.0% packet loss
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round-trip min/avg/max/stddev = 19.936/19.936/19.936/0.000 ms
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❯ echo $?
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0
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```
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### nmap
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```bash
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❯ nmap maboiteverte.fr -PN -p 22 | grep open
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22/tcp open ssh
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# immédiat
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❯ echo $?
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0
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```
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```bash
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❯ nmap clicclac.synology.me -PN -p 42666 | grep open
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# 2s
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❯ echo $?
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1
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```
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```bash
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if [ "$?" = 0 ]
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then
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echo "Host found"
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else
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echo "Host not found"
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fi
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```
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# nc
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```bash
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❯ nc -z -G 2 maboiteverte.fr 22
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Connection to maboiteverte.fr port 22 [tcp/ssh] succeeded!
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# immédiat
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❯ echo $?
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0
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```
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```bash
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❯ nc -z -G 2 clicclac.synology.me 42666
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# 3s
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❯ echo $?
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1
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```
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# ssh
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```bash
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❯ &>/dev/null ssh bruno@maboiteverte.fr true && echo "up" || echo "down"
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up
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# 2s
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```
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```bash
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❯ &>/dev/null ssh bruno@clicclac.synology.me true && echo "up" || echo "down"
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down
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# long 75s
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```
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