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guckyh
byguckyh, August 7, 2012
let's simple check for ssh-port 22
this is the part of code used - then it looks if there is at least ONE line
netstat -an | grep LISTEN | grep 22
result:
*.22 *.* 0 0 49152 0 LISTEN
*.22 *.* 0 0 49152 0 LISTEN
*.11221 *.* 0 0 49152 0 LISTEN
*.11222 *.* 0 0 49152 0 LISTEN
*.22 *.* 0 0 49152 0 LISTEN
(you get any line containing "22" not only where the PORT is 22!!
this is the part of code used - then it looks if there is at least ONE line
netstat -an | grep LISTEN | grep 22
result:
*.22 *.* 0 0 49152 0 LISTEN
*.22 *.* 0 0 49152 0 LISTEN
*.11221 *.* 0 0 49152 0 LISTEN
*.11222 *.* 0 0 49152 0 LISTEN
*.22 *.* 0 0 49152 0 LISTEN
(you get any line containing "22" not only where the PORT is 22!!
