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I used to modify crontabs by listing crontab contents (-l option) and sending it to a dated file, this way i keep a record of the previous crontabs... if you use -e option for editing directly the...

thanks all for your answer, i'll try it tomorrow.\
You're right Perderabo, i was talking about an RS232 connection. All the parameters you mention are configurables on the external device and i have...

i have an external device sending serial messages i want to connect this device to a serial port in my sun blade box and record those messages to a file, how can i read the serial port and write it...