Gary questions

• How to convert any date time to microseconds in perl
• how to write and run a shell program on terminal without saving it first [closed]
• how can change derby to READ/WRITE mode
• how can I get filenames without directory name
• How do I know if a bash script is running with nohup?
• about Oracle parallel insert performance
• Django JSON field. 'module' object has no attribute 'JSONField'
• switch/case doesn't work in awk
• How do I access an Oracle db without installing Oracle's client and cx_Oracle?
• check if argument is a valid date in bash shell

Gary answers