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Linux 基本

Last updated at Posted at 2020-06-18

###基本コマンド

  • ps -as
    • 稼働中のプロセスを見る
  • ps -ef|egrep|[見たいプロセス名]|[見たいプロセス名]|・・・|grep -v grep
  • systemctl status firewalld.service
  • systemctl list-unit-files -t service
    • 全サービスの稼働状況をみる

####vim

  • 検索で次のヒットに移動する
    • /で検索した後に「n」
  • 元に戻す [u]
  • 元に戻したのを戻す [Ctrl+r]

###mysql

  • 同時接続数のマックス確認
show variables like 'max_connections';

###プロセスのkill

ps aux | grep '探したいプロセス'
kill -9 pid(プロセスID)
//-9 はSIGKILLで強制終了の意味

###error message対応

###システムリソース確認

free -m //メモリ使用量確認
top //CPU利用率とか
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