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Accepted
yael
Asked: 2013-05-09 03:48:45 +0800 CST

sed + how to remove the last string after specific character

  • 772

how to remove the last string after "." character include the "." character itself

implementation can be with sed under Linux/Solaris operation system

example of IP address before change

      192.9.200.1     ( need to remove the .1 )

expected results

      192.9.200

other example

      100.2.2.101FFF

expected results

      100.2.2
linux

2 Answers

  1. Why sed? How about manipulating with bash parameter expansion?

    var="192.168.200.1"
echo ${var%.*}

192.168.200
    • 8
  2. Best Answer

    maybe with cut instead of sed?

    echo "10.10.10.5" | cut -d. -f-3

    if it has to be sed 

    echo "10.10.10.5fsdfdsf" | sed -e 's/\.[^\.]*$//'
    • 6