Command 1: echo "11-FEB-19 AM" | cut -d' ' -f1,2 | sed 's/\./:/g' |cut -d: -f1-3

Command 2: date -d "OUTPUT COMMAND1" +'%s'

Expected : - echo "11-FEB-19 AM" | cut -d' ' -f1,2 | sed 's/\./:/g' |cut -d: -f1-3 | date -d "XXX" +'%s'

I need output of prev command (cut -d: -f1-3) and put it in XXX

  • 1
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  • I need output of prev command (cut -d: -f1-3) and put it in XXX. – Sonal Feb 11 at 22:03
  • I'm not sure what "XXX" refers to. If "XXX" is the formatted date and you want to convert that to the number of seconds since the Unix epoch then your answer is 1549924211 (echo "11-FEB-19 AM" | cut -d' ' -f1,2 | sed 's/\./:/g' | cut -d: -f1-3 | date +"%s") – rkhff Feb 11 at 22:33
  • If i do date -d "11-FEB-19 06:14:52" +'%s' the output is 1549894492 ... if i execute your command it generates new number every time – Sonal Feb 11 at 22:36

A pipeline cmd1 | cmd2 sends the output of the first command to the standard input of the second. What you seem to want is to put the output of the first command on the command line of the second. The way to do that is the command substitution: $(command).

This would put the output of cmd1 on the command line of cmd2:

cmd1 "$(cmd2)"

Or, in your case:

date -d "$(echo ... |cut)" +%s 
  • Awesome. Thanks! – Sonal Feb 11 at 23:31

For readability, I'd still use multiple lines:

datetime=$( echo "11-FEB-19 AM" | sed -e 's/\./:/g' -e 's/:[^:]\+$//' )
epoch=$( date -d "$datetime" +%s )
echo "$epoch"

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