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  • can you please tell what grep -Fq "$1" does? Commented Feb 27, 2014 at 12:35
  • And the script give error grep: input file `mycron' is also the output Commented Feb 27, 2014 at 12:43
  • @JishnuUNair -F would make grep interpret the pattern as fixed string. Commented Feb 27, 2014 at 12:50
  • @JishnuUNair Are you sure that you copied the above text correctly? Commented Feb 27, 2014 at 12:50
  • yes, I have copied it correctly. Commented Feb 27, 2014 at 12:59