{"id":8240,"date":"2017-08-11T08:10:48","date_gmt":"2017-08-11T00:10:48","guid":{"rendered":"http:\/\/jpuyy.com\/?p=8240"},"modified":"2017-08-11T08:11:36","modified_gmt":"2017-08-11T00:11:36","slug":"bash-countdown","status":"publish","type":"post","link":"https:\/\/jpuyy.com\/?p=8240","title":{"rendered":"bash countdown"},"content":{"rendered":"<p>\u8f93\u5165 countdown + \u79d2\u6570\uff0c\u5c31\u5f00\u59cb\u5012\u8ba1\u65f6\u4e86<\/p>\n<p>gnu date<\/p>\n<pre>\r\nfunction countdown(){  \r\n    local now=$(date +%s)\r\n    local end=$((now + $1))\r\n    while (( now < end )); do   \r\n        printf \"%s\\r\" \"$(date -u -d @$((end - now)) +%T)\"  \r\n        sleep 0.25  \r\n        now=$(date +%s)\r\n    done  \r\n    echo\r\n}\r\n<\/pre>\n<p>osx date<\/p>\n<pre>\r\nfunction countdown(){  \r\n    echo $2\r\n    local now=$(date +%s)\r\n    local end=$((now + $1))\r\n    while (( now < end )); do   \r\n        printf \"%s\\r\" \"$(date -u -j -f %s $((end - now)) +%T)\"  \r\n        sleep 0.25  \r\n        now=$(date +%s)\r\n    done\r\n}\r\n<\/pre>\n<p>\u53c2\u8003:https:\/\/superuser.com\/questions\/850368\/osx-bash-command-line-countdown-timer?answertab=votes#tab-top<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u8f93\u5165 countdown + \u79d2\u6570\uff0c\u5c31\u5f00\u59cb\u5012\u8ba1\u65f6\u4e86 gnu date function countdown(){ local now=$(date +%s) local end=$((now + $1)) while (( now < end )); do printf \"%s\\r\" \"$(date -u -d @$((end - now)) +%T)\" sleep 0.25 now=$(date +%s) done echo } osx date function countdown(){ echo $2 local now=$(date +%s) local end=$((now + $1)) while (( now < [&hellip;]\n<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[],"class_list":["post-8240","post","type-post","status-publish","format-standard","hentry","category-linux"],"_links":{"self":[{"href":"https:\/\/jpuyy.com\/index.php?rest_route=\/wp\/v2\/posts\/8240","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/jpuyy.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/jpuyy.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/jpuyy.com\/index.php?rest_route=\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/jpuyy.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=8240"}],"version-history":[{"count":2,"href":"https:\/\/jpuyy.com\/index.php?rest_route=\/wp\/v2\/posts\/8240\/revisions"}],"predecessor-version":[{"id":8242,"href":"https:\/\/jpuyy.com\/index.php?rest_route=\/wp\/v2\/posts\/8240\/revisions\/8242"}],"wp:attachment":[{"href":"https:\/\/jpuyy.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=8240"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/jpuyy.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=8240"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/jpuyy.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=8240"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}