{"id":322,"date":"2023-08-01T12:50:08","date_gmt":"2023-08-01T03:50:08","guid":{"rendered":"http:\/\/tech.itdesk.co.kr\/?p=322"},"modified":"2023-08-01T12:50:08","modified_gmt":"2023-08-01T03:50:08","slug":"crontab-%eb%93%b1%eb%a1%9d%ec%97%90-%ea%b4%80%ed%95%9c-%ec%a0%95%eb%a6%ac","status":"publish","type":"post","link":"https:\/\/iwgh.duckdns.org\/?p=322","title":{"rendered":"Crontab \ub4f1\ub85d\uc5d0 \uad00\ud55c \uc815\ub9ac."},"content":{"rendered":"\n
    \n
  1. \ud06c\ub860\ud45c\ud604\uc2dd\uc5d0\uc11c \uc2e4\ud589\uc2dc\uac04 \ud45c\uc2dc, \ubc18\ubcf5<\/li>\n\n\n\n
  2. Shell \uc120\uc5b8. \uc2a4\ud06c\ub9bd\ud2b8 \uc2e4\ud589\uc5d0 \uc0ac\uc6a9\ud560 shell\uc744 \uc815\uc758<\/li>\n\n\n\n
  3. \ubcc0\uc218\uc120\uc5b8 \ubcc0\uc218\uba85=\uac12(\uc218\uc2dd\/\ud638\ucd9c\uc2dd)\uc744 \uc774\uc6a9\ud574 \ubcc0\uc218\ub97c \uc815\uc758<\/li>\n\n\n\n
  4. \ub85c\uadf8 \uae30\ub85d. \uac01 \uba85\ub839\uc5b4 \ub4a4\uc5d0 \ub85c\uadf8\ud30c\uc77c\uc744 \uc9c0\uc815\ud574 \ucd9c\ub825 redirection \uc2dc\ucf1c \ub85c\uadf8 \ud30c\uc77c \uc0dd\uc131
    <\/li>\n<\/ol>\n\n\n\n
    \n\n\n\n
      \n
    1. \ud06c\ub860\ud45c\ud604\uc2dd\uc5d0\uc11c \uc2e4\ud589\uc2dc\uac04 \ud45c\uc2dc, \ubc18\ubcf5
      \ub300\ubd80\ubd84\uc758 \uc2dc\uc2a4\ud15c\uc5d0\uc11c “* * * * *” 5\uac1c\uc758 \uc2dc\uac04\ud45c\uc2dc \ud56d\ubaa9\uc744 \uac00\uc9d0.
      \ubd84, \uc2dc, \uc77c, \uc6d4, \uc694\uc77c, (\ub9c8\uc9c0\ub9c9\uc5d0 \ub144\ub3c4\uac00 \uc624\ub294 \ud45c\ud604\uc2dd\ub3c4 \uc788\uc74c, \ub300\ubd80\ubd84 5\uc790\ub9ac\ub85c \ud45c\ud604)
      \ubd84 : 0-59
      \uc2dc : 0-23
      \uc77c : 1-31
      \uc6d4 : 1-12
      \uc694\uc77c : 0-6 or 1-7 ;; 0-6(\uc77c\ubc18\uc801\uc778 \ud06c\ub860 0\uc774 \uc77c\uc694\uc77c 6\uc774 \ud1a0\uc694\uc77c), 1-7(Quartz\ud06c\ub860 1\uc774 \uc77c\uc694\uc77c)

      \uc8fc\ub85c \uc4f0\ub294 \ud45c\ud604 \uac12\uc740 \uc544\ub798\uc640 \uac19\uc74c.
      *<\/mark> : \ubaa8\ub4e0 \uac12. (\ub9e4 \ubd84, \ub9e4 \uc2dc, \ub9e4 \uc77c \ub4f1\uc5d0 \uc0ac\uc6a9)
      ,<\/mark> : \uc5ec\ub7ec\uac1c\uc758 \uac12\uc744 \uc9c0\uc815\ud560 \ub54c. \uc2dc\uac04\uc790\ub9ac\uc5d0 \ub2e4\uc74c \ud45c\ud604\uc77c \ub54c 6,12 -> 6\uc2dc, 12\uc2dc\uc5d0 \uc2e4\ud589.
      –<\/mark> : \ubc94\uc704. \ub9cc\uc57d \ubd84 \uc790\ub9ac\uc5d0 “5-10” \uc774\ub77c\uba74 5~10 \ubd84\ub3d9\uc548 \ub9e4 \ubd84\uc744 \uc2e4\ud589. 5,6,7,8,9,10 \uacfc \ub3d9\uc77c\ud55c \uac12.
      \/<\/mark> : \uc2dc\uc2a4\ud15c\uc5d0 \ub530\ub77c \ud45c\ud604\ubc29\uc2dd\uc740 \uc0c1\uc774\ud558\ub098. \uba87 \ubd84\/\uc2dc.. \ub9c8\ub2e4 \ud55c \ubc88\uc744 \ud45c\ud604
      \ubd84 \uc790\ub9ac\uc5d0 “*\/5” \ub77c\uba74 5\ubd84\ub9c8\ub2e4 \ud55c \ubc88\uc529 \uc2e4\ud589. \uc2dc\uc2a4\ud15c\uc5d0 \ub530\ub77c “0\/5″\ub85c \ud45c\ud604
      \uc774\ub54c\ub294 0\ubd84\ubd80\ud130 5\ubd84 \ub9c8\ub2e4 \uc2e4\ud589(Quartz\/Spring \ud45c\ud604\uc2dd)
      L<\/mark> : \ubc94\uc704\uc758 \ub9c8\uc9c0\ub9c9 \uc22b\uc790, “0 20 13 ? * 6L” (\ub9e4\uc6d4 \ub9c8\uc9c0\ub9c9 \ud1a0\uc694\uc77c 13:20)-> Quartz \ud45c\ud604\uc2dd(6\uc790\ub9ac)
      \uc5d0\uc11c \uc0ac\uc6a9\ub418\ub294 \uac78\ub85c \ucd94\uc815
      W<\/mark> : \uc8fc\uc911\uc73c\ub85c \uc9c0\uc815
      #<\/mark> : N\ubc88\uc9f8 \ud2b9\uc815\uc694\uc77c \uc124\uc815
      EX>
      <\/kbd>5 * * * * : \ub9e4\uc2dc\uac04 5\ubd84\uc5d0 \uc2e4\ud589
      *\/5 * * * * : 5\ubd84\ub9c8\ub2e4 \uc2e4\ud589
      0,10,20,30,40,50 * * * * : 0,10,20… \ubd84\ub9c8\ub2e4 \uc2e4\ud589
      0-10 17 1 * * : \ub9e4\ub2ec 1\uc77c 17\uc2dc 0\ubd84\ubd80\ud130 10\ubd84\uae4c\uc9c0 \ub9e4 \ubd84 \uc2e4
      5 8-20\/3 * * * : 8\uc2dc\uc5d0\uc11c 20\uc2dc\uae4c\uc9c0 3\uc2dc\uac04\ub9c8\ub2e4 \uc2e4\ud589
      0 17 * * 1 : \ub9e4\uc8fc \uc6d4\uc694\uc77c(1) 17\uc2dc\uc5d0 \uc2e4\ud589
      0 21 * * 1-5 : \ub9e4\uc8fc \uc6d4~\uae08\uc694\uc77c 21\uc2dc\uc5d0 \uc2e4\ud589

      CRON \ud3b8\uc9d1\ucc3d\uc5d0\uc11c\ub294 \uc77c\ubc18 \uc2a4\ud06c\ub9bd\ud2b8\uc5d0\uc11c \uc4f0\ub294 \uba85\ub839\uc5b4\ub85c \ubcc0\uc218\uce58\ud658\uc774 \uc801\uc6a9\ub418\uc9c0 \uc54a\uc74c.
      ex> touch \/tmp\/crontest_$(date +%Y%m%d%H%M).log
      -> \/tmp\/crontest_202307311530.log\uc640 \uac19\uc774 \uba85\ub839\uc5b4\uc758 \uacb0\uacfc\uac12\uc744 \ud30c\uc77c\uc774\ub984\uc73c\ub85c \uce58\ud658\ud560 \uc218 \uc788\uc73c\ub098 crontab \ud3b8\uc9d1\ucc3d\uc5d0 \ub123\uc73c\uba74 \uc81c\ub300\ub85c \uc801\uc6a9\ub418\uc9c0 \uc54a\uc74c.
      \ub3d9\uc77c\ud55c \uba85\ub839\uc5b4\ub97c crontab\uc5d0 \ub123\uc73c\uba74 \/tmp\/crontest_ \uc73c\ub85c \uc0dd\uc131.

      \ud558\uae30\uc640 \uac19\uc774 “`” \ubb38\uc790\uc640 “\\” \ubb38\uc790\ub97c \uc0ac\uc6a9\ud558\uc5ec \ud45c\ud604\uac00\ub2a5.<\/li>\n<\/ol>\n\n\n\n
      \"\"<\/figure>\n\n\n\n
      \n\n\n\n

      2. Shell \uc120\uc5b8. \uc2a4\ud06c\ub9bd\ud2b8 \uc2e4\ud589\uc5d0 \uc0ac\uc6a9\ud560 shell\uc744 \uc815\uc758
      Shell Script \ud30c\uc77c \uac00\uc7a5 \ucc98\uc74c\uc5d0 \ud574\ub2f9 shell\uc5d0\uc11c \uc0ac\uc6a9\ud560 shell\uc744 \uc815\uc758
      \ubcc4\ub3c4\uc758 \uc815\uc758\uac00 \uc5c6\ub294 \uacbd\uc6b0 \uc2dc\uc2a4\ud15c\uc758 \uae30\ubcf8 shell\uc744 \uc0ac\uc6a9\ud558\uac8c \ub428.

      #!\/usr\/bin\/sh
      <\/p>\n\n\n\n

      3. \ubcc0\uc218\uc120\uc5b8 \ubcc0\uc218\uba85=\uac12(\uc218\uc2dd\/\ud638\ucd9c\uc2dd)\uc744 \uc774\uc6a9\ud574 \ubcc0\uc218\ub97c \uc815\uc758
      \ubcc0\uc218\uba85=\uac12 \ub610\ub294 \uc218\uc2dd
      LOGDIR=\/var\/log
      BAKDATE=$(date +%Y%m%d%H%M)

      \uc77c\ubc18\uc801\uc73c\ub85c \uc0c1\uc218\ub294 \ub300\ubb38\uc790, \ubcc0\uc218\ub294 \uc18c\ubb38\uc790\ub97c \uc0ac\uc6a9.
      \uc258 \uc2a4\ud06c\ub9bd\ud2b8\uc758 \ubcc0\uc218\ub294 \uae30\ubcf8\uc801\uc73c\ub85c type\uc774 \uc5c6\uc73c\uba70 \ubb38\uc790\uc5f4\ub85c \uc778\uc2dd
      \ubcc0\uc218\uc5d0 \uacf5\ubc31\uc774 \ud3ec\ud568\ub41c \uacbd\uc6b0\ub294 “”\ub85c \uac10\uc2f8\uc11c \ucc98\ub9ac,
      \uba85\ub839\uc5b4 \uc2e4\ud589\uacb0\uacfc\ub97c \uce58\ud658\ud558\ub294 \uacbd\uc6b0 $() \ub610\ub294 `\uc73c\ub85c \uac10\uc2f8\uc11c \uba85\ub839\uc5b4 \uce58\ud658
      $\ubcc0\uc218\uba85 \ub610\ub294 ${\ubcc0\uc218\uba85} \uc73c\ub85c \ubcc0\uc218 \uc0ac\uc6a9,
      \uc5ec\ub824 \ubcc0\uc218\ub97c \uc0ac\uc6a9\ud558\uac70\ub098 \ubcc0\uc218\ub97c \ubcc0\uc218\uc5d0 \uc785\ub825\ud558\ub294 \uacbd\uc6b0, ${} \uc0ac\uc6a9\uc73c\ub85c \ubcc0\uc218\ub97c
      \uba85\ud655\ud558\uac8c \uad6c\ubd84\ud574\uc57c \ub428.

      \uc0ac\uc6a9\uc790\uc5d0\uac8c \uc785\ub825\ubc1b\uae30 : read \ud568\uc218 \uc0ac\uc6a9. read\ub97c \uc774\uc6a9\ud574 id \ubcc0\uc218\uc5d0 \uc785\ub825\/\ucd9c
      echo -n “Enter your ID : “
      read id
      echo “Now your ID is $id”<\/p>\n\n\n\n

      4. \ub85c\uadf8 \uae30\ub85d. \uac01 \uba85\ub839\uc5b4 \ub4a4\uc5d0 \ub85c\uadf8\ud30c\uc77c\uc744 \uc9c0\uc815\ud574 \ucd9c\ub825 redirection \uc2dc\ucf1c \ub85c\uadf8 \ud30c\uc77c \uc0dd\uc131
      crontab \ud3b8\uc9d1\ucc3d\uc5d0\uc11c\ub294 1\ubc88\uc608\uc5d0\uc11c \ubd24\ub4ef\uc774 “`” \uc640 “\\”\uc744 \uc774\uc6a9\ud560 \ud544\uc694\uac00 \uc788\uc74c.
      shell script \ub0b4\uc5d0\uc11c\ub098 shell\uc5d0\uc11c\ub294 \uc120\uc5b8\ub41c \ubcc0\uc218\ub97c \ubd88\ub7ec\uc624\uac70\ub098 \uba85\ub839\uc5b4 \uce58\ud658\uc744 \uc0ac\uc6a9.<\/p>\n\n\n\n


      cp -rp \/test\/test* \/testbak >> $LOGDIR\/$BAKDATE_cpwork.log 2>&1
      cp -rp \/test\/test* \/testbak >> \/var\/log\/$(date +%Y%m%d%H%M)_cpwork.log 2>&1
      > \uc73c\ub85c \ub9ac\ub514\ub809\uc158\ud558\ub294 \uacbd\uc6b0 \ub36e\uc5b4\uc4f0\uae30 \ub428.
      >> \uc73c\ub85c \ub9ac\ub514\ub809\uc158\ud558\ub294 \uacbd\uc6b0 \ub367\ubd99\uc5ec \uc4f0\uac8c \ub428.
      2>&1 : \ud45c\uc900\ucd9c\ub825 \uc9c0\uc815\ub41c \uacf3\uc73c\ub85c \ud45c\uc900\uc5d0\ub7ec\ub3c4 \uac19\uc774 \ubcf4\ub0c4. \uc989 \ub9ac\ub2e4\uc774\ub809\uc158\ub41c \uc55e\uc758 \ud30c\uc77c\ub85c
      \uc5d0\ub7ec\ub0b4\uc6a9 \ubc0f \uc815\uc0c1\ucd9c\ub825 \ubaa8\ub450 \uae30\ub85d.
      0 : \ud45c\uc900 \uc785\ub825
      1 : \ud45c\uc900 \ucd9c\ub825
      2 : \ud45c\uc900 \uc5d0\ub7ec \ucd9c\ub825
      \ud654\uba74\uc5d0 \uc2e4\ud589\ub0b4\uc6a9\uc744 \ucd9c\ub825\ub418\uc9c0 \uc54a\uac8c \ud558\uae30 \uc704\ud55c \uc6a9\ub3c4\ub85c\ub3c4 \uc0ac\uc6a9 \/dev\/null \ub85c \ubcf4\ub0b4\ub294 \uacbd\uc6b0

      cp -rp \/test\/test* \/testbak | tee -a $LOGDIR\/$BAKDATE_cpwork.log
      tee \uba85\ub839\uc5b4\ub85c \ub85c\uadf8\uae30\ub85d \uac00\ub2a5, \uae30\ubcf8\uc801\uc73c\ub85c \ud654\uba74\ucd9c\ub825\ub3c4 \uc720\uc9c0, \ub367\ubd99\uc5ec\uc4f0\uae30\ub85c \ub428.
      \ub2e8, \ud45c\uc900 \ucd9c\ub825\ub9cc \ub9ac\ub2e4\uc774\ub809\uc158 \ub428. \ud45c\uc900\uc5d0\ub7ec\ub294 \ud654\uba74\uc5d0\ub9cc \ucc0d\ud788\uace0 \uae30\ub85d\ub418\uc9c0 \uc54a\uc74c.<\/p>\n\n\n\n

      <\/p>\n","protected":false},"excerpt":{"rendered":"

      2. Shell \uc120\uc5b8. \uc2a4\ud06c\ub9bd\ud2b8 \uc2e4\ud589\uc5d0 \uc0ac\uc6a9\ud560 shell\uc744 \uc815\uc758 Shell Script \ud30c\uc77c \uac00\uc7a5 \ucc98\uc74c\uc5d0 \ud574\ub2f9 shell\uc5d0\uc11c \uc0ac\uc6a9\ud560 shell\uc744 \uc815\uc758 \ubcc4\ub3c4\uc758 \uc815\uc758\uac00 \uc5c6\ub294 \uacbd\uc6b0 \uc2dc\uc2a4\ud15c\uc758 \uae30\ubcf8 shell\uc744 […]<\/p>\n","protected":false},"author":1,"featured_media":123,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[18,1],"tags":[85,11,86,87,84,88],"class_list":["post-322","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-small","category-tech","tag-cron","tag-linux","tag-log","tag-redirection","tag-shell-script","tag-88"],"_links":{"self":[{"href":"https:\/\/iwgh.duckdns.org\/index.php?rest_route=\/wp\/v2\/posts\/322","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/iwgh.duckdns.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/iwgh.duckdns.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/iwgh.duckdns.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/iwgh.duckdns.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=322"}],"version-history":[{"count":2,"href":"https:\/\/iwgh.duckdns.org\/index.php?rest_route=\/wp\/v2\/posts\/322\/revisions"}],"predecessor-version":[{"id":325,"href":"https:\/\/iwgh.duckdns.org\/index.php?rest_route=\/wp\/v2\/posts\/322\/revisions\/325"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/iwgh.duckdns.org\/index.php?rest_route=\/wp\/v2\/media\/123"}],"wp:attachment":[{"href":"https:\/\/iwgh.duckdns.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=322"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/iwgh.duckdns.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=322"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/iwgh.duckdns.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=322"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}