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MacOS の cron から bash スクリプトを実行するときに変数 (ローカルで定義) が定義されない

tag-icon • tag-icon bash mac-osx cron shell
MacOS の cron から bash スクリプトを実行するときに変数 (ローカルで定義) が定義されない

バックアップ作成用の次のスクリプトがあります:

#!/usr/bin/env bash
{
  declare -a directories=(
    "/Applications/Apache"
    "/Applications/Scripts"
  )

  function duplicateBackups()
  {
    from=`realpath $1`
    to=`realpath $2`
    echo [ `date +"%T"` ] Copying backups from $from to $to
    cp -r $1 $2/
    sleep 1
  }

  date=`date +"%Y-%m-%d"`

  destination1='/opt/Volumes/USB1'
  destination2='/opt/Volumes/USB2'
  destination3='/opt/Volumes/FireWire'
  destination4='/opt/Volumes/USB3'
  destinationFolder='MacMini-Backups'
  targetFolder=$destination1/$destinationFolder/$date

  mkdir $targetFolder
  targetPath=`realpath $targetFolder`

  echo [ `date +"%T"` ] Starting files backups

  for i in "${directories[@]}"
  do
    fileName="$(basename $i)"
    mkdir -p $targetFolder/Files/
    echo [ `date +"%T"` ] Backing up "$i" as "$targetPath/Files/$fileName.tgz"
    tar -Pczf $targetFolder/Files/$fileName.tgz -C $i .
    sleep 1
  done
  echo [ `date +"%T"` ] Files backups finished
  sleep 1
  echo [ `date +"%T"` ] Starting databases backup
  sleep 1

  mkdir -p $targetFolder/Databases/

  echo [ `date +"%T"` ] Backing up all databases into $targetPath/Databases/full-dump.sql.gz
  mysqldump --opt --all-databases --skip-lock-tables | gzip -c > $targetFolder/Databases/full-dump.sql.gz

  for db in `mysql -se "show databases;"`;
  do
    if [[ ${db} != *"schema"* ]]; then
      echo [ `date +"%T"` ] Backing up database $db into $targetPath/Databases/$db-dump.sql.gz
      mysqldump --skip-lock-tables --opt $db | gzip -c > $targetFolder/Databases/$db-dump.sql.gz
      sleep 1
    fi
  done;
  echo [ `date +"%T"` ] Databases backup finished
  sleep 1

  duplicateBackups $destination1/$destinationFolder/$date $destination2/$destinationFolder
  duplicateBackups $destination1/$destinationFolder/$date $destination3/$destinationFolder
  duplicateBackups $destination1/$destinationFolder/$date $destination4/$destinationFolder

} >> /Applications/Scripts/Logs/backups.log

このスクリプトは、シェル、bash、ZSH のいずれから実行しても、手動で実行すると完全に正常に動作します。

その場合のログ ファイルは次のようになります。

[ 09:26:05 ] Starting files backups
[ 09:26:05 ] Backing up /Applications/Apache as /Volumes/USB1/MacMini-Backups/2020-12-31/Files/Apache.tgz
[ 09:27:14 ] Backing up /Applications/Scripts as /Volumes/USB1/MacMini-Backups/2020-12-31/Files/Scripts.tgz
[ 09:27:15 ] Files backups finished
[ 09:27:16 ] Starting databases backup
[ 09:27:17 ] Backing up all databases into /Volumes/USB1/MacMini-Backups/2020-12-31/Databases/full-dump.sql.gz
[ 09:27:35 ] Backing up database Cloud into /Volumes/USB1/MacMini-Backups/2020-12-31/Databases/Cloud-dump.sql.gz
[ 09:27:36 ] Backing up database mysql into /Volumes/USB1/MacMini-Backups/2020-12-31/Databases/mysql-dump.sql.gz
[ 09:27:38 ] Backing up database radek into /Volumes/USB1/MacMini-Backups/2020-12-31/Databases/site-dump.sql.gz
[ 09:27:41 ] Backing up database radek_j3 into /Volumes/USB1/MacMini-Backups/2020-12-31/Databases/site_j3-dump.sql.gz
[ 09:27:45 ] Backing up database test into /Volumes/USB1/MacMini-Backups/2020-12-31/Databases/test-dump.sql.gz
[ 09:27:46 ] Backing up database site_j3 into /Volumes/USB1/MacMini-Backups/2020-12-31/Databases/joomla_3-dump.sql.gz
[ 09:27:48 ] Backing up database joomla_dev into /Volumes/USB1/MacMini-Backups/2020-12-31/Databases/joomla_dev-dump.sql.gz
[ 09:27:49 ] Backing up database joomla_dev2 into /Volumes/USB1/MacMini-Backups/2020-12-31/Databases/joomla_dev2-dump.sql.gz
[ 09:27:51 ] Backing up database joomla_j4 into /Volumes/USB1/MacMini-Backups/2020-12-31/Databases/joomla_j4-dump.sql.gz
[ 09:27:53 ] Backing up database joomla_site into /Volumes/USB1/MacMini-Backups/2020-12-31/Databases/joomla_site-dump.sql.gz
[ 09:28:06 ] Databases backup finished
[ 09:28:07 ] Copying backups from /Volumes/USB1/MacMini-Backups/2020-12-31 to /Volumes/USB2/MacMini-Backups
[ 09:28:30 ] Copying backups from /Volumes/USB1/MacMini-Backups/2020-12-31 to /Volumes/FireWire/MacMini-Backups
[ 09:28:43 ] Copying backups from /Volumes/USB1/MacMini-Backups/2020-12-31 to /Volumes/USB3/MacMini-Backups

ただし、cronjob、Automator、または Apple カレンダーを介して実行すると、ログ ファイルは次のようになります。

[ 06:00:00 ] Starting files backups
[ 06:00:00 ] Backing up /Applications/Apache as /Files/Apache.tgz
[ 06:01:22 ] Backing up /Applications/Scripts as /Files/Scripts.tgz
[ 06:01:23 ] Files backups finished
[ 06:01:25 ] Starting databases backup
[ 06:01:26 ] Backing up all databases into /Databases/full-dump.sql.gz
[ 06:01:26 ] Databases backup finished
[ 06:01:27 ] Copying backups from to
[ 06:01:46 ] Copying backups from to
[ 06:01:58 ] Copying backups from to

そのスクリプトで定義したこれらの変数は効果がないと思われます。

ここで何が問題なのか知っている人はいますか?

答え1

どうもありがとう苦味のあるそしてマーク・ワグナー彼らの助けに感謝します。エラー出力を追加した後、パスの欠落と、ディレクトリにアクセスして MySQL からデータベースのリストを読み取る権限の欠如が混在していることが判明しました。

どうもありがとう

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