Crontab

Match pattern A OR Pattern B OR Pattern C ...

tcpdump -A host bob.net | egrep '\"site\":{\"id\":\"(386105|87347|166881|381105|316817)\"'

Comment out a specific crontab job

Let's say we have many jobs in crontab and we'd like to comment out this one:

*/10 * * * * /usr/share/mapstats/mapstats

• Locally:

 crontab -l | sed 's/.*\usr\/share\/mapstats\/mapstats/#&/' | crontab -

• Remotely on multiple servers, example:

for i in 172.16.16.{1..50}; do ssh -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no $i "crontab -l | sed 's/.*\usr\/share\/mapstats\/mapstats/#&/' | crontab -" ; done