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We want to print the log in bash script with the following date format

 2018-03-22 09:54:05,$task   ( $task is a counter of command )

 echo " `date +% .... ,$task` INFO $1"   ( $1 is the $1 argument that we want to print )

example

 2018-03-22 09:54:05,001 INFO script begin to start server
 2018-03-22 09:54:05,001 INFO script begin to start agent
  • 1
    What have you tried? The date manpage lists the various formatting directives it supports. – Stephen Kitt Mar 22 '18 at 10:03
  • echo " date +%G"-"%d"-"%H " – yael Mar 22 '18 at 10:09
3

You don't need echo in this instance:

date +"%F %T,$task INFO $1"

If $task or $1 contains %, then these has to be replaced with %% first so that they are not interpreted as format sequences by date. This could be done in bash with

date +"%F %T,${task//%/%%} INFO ${1//%/%%}"
2

From man date:

%F     full date; same as %Y-%m-%d
%T     time; same as %H:%M:%S

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