comm

Select or reject lines common to two files. Both files must be sorted. More information: <https://www.gnu.org/software/coreutils/comm>.

Install

All systems
curl cmd.cat/comm.sh
Debian Debian
apt-get install coreutils
Ubuntu
apt-get install coreutils
Alpine
apk add coreutils
Arch Arch Linux
pacman -S coreutils
image/svg+xml Kali Linux
apt-get install coreutils
CentOS
yum install coreutils
Fedora
dnf install coreutils
Windows (WSL2)
sudo apt-get update sudo apt-get install coreutils
OS X
brew install coreutils
Raspbian
apt-get install coreutils
Docker
docker run cmd.cat/comm comm powered by Commando

Select or reject lines common to two files. Both files must be sorted. More information: <https://www.gnu.org/software/coreutils/comm>.

  • Produce three tab-separated columns: lines only in first file, lines only in second file and common lines:
    comm file1 file2
  • Print only lines common to both files:
    comm -12 file1 file2
  • Print only lines common to both files, reading one file from `stdin`:
    cat file1 | comm -12 - file2
  • Get lines only found in first file, saving the result to a third file:
    comm -23 file1 file2 > file1_only
  • Print lines only found in second file, when the files aren't sorted:
    comm -13 <(sort file1) <(sort file2)

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