使用开始和结束特定字符剪切 shell 的输出
Cut output of shell with starts and finishes specific character
我有一个 html/text 文件，其中包含可下载的 URL 视频，但我需要将文件剪切为 link。
比如以url240=或url360=或480等开头，有URLLinkOfUrl，以&jpg...[=20结束=]
我想得到像 url240=https://cs542402.vk.me/6/u313752528/videos/68ec547387.240.mp4?extra=JVSeMzU2-msXVuseackTFCgnVNEPOnboxMdXN3ZGH1l91djR7bk9DzaxyKFGJ2SXg39BcZxJM6tBip0ui3dDEkULDSbkuzpaOA 或 这样的输出，这就是我的观点 -->> https://cs542402.vk.me/6/u313752528/videos/68ec547387.240.mp4?extra=JVSeMzU2-msXVuseackTFCgnVNEPOnboxMdXN3ZGH1l91djR7bk9DzaxyKFGJ2SXg39BcZxJM6tBip0ui3dDEkULDSbkuzpaOA
我该怎么办？
我的目标是抓取视频 link 并从不使用浏览器或不使用手动操作的终端下载它。我打算编写一个 shell 脚本来自动执行此操作，因此我需要将 link 分配为变量，然后我将使用 axel $variable 。 （如果有人想知道我是如何得到的，我使用 wget 来获取 html/text 个文件。）
Here是我原来的html/text文件
我有文件的小文本:
</param> <param name="flashvars" value="uid=313752528&vid=171193750&oid=313752528&host=https://cs542402.vk.me/&vtag=68ec547387&ltag=l_f4d9714c&vkid=171193750&md_title=Hi.Ki3+ep08&md_author=Kadem+%26%23199%3Belik&author_href=/id313752528&hd=3&no_flv=1&hd_def=0&dbg_on=0&t=0&duration=1399&thumb=https://pp.vk.me/c621922/v621922528/26d5d/buRyDSImp1Y.jpg&hash=17cc43bba064a6bd4c887b2b336e28a1&hash2=8a5ce8fb95dac3b7&angle=0&img_angle=0&repeat=0&show_ads=0&show_ads_postroll=0&legal_owner=0&eid1=0&slot=0&g=0&a=0&puid34=0&water_mark=&can_rotate=1&no_adfox=1&ads_preview=0&puid4=0&url240=https://cs542402.vk.me/6/u313752528/videos/68ec547387.240.mp4?extra=JVSeMzU2-msXVuseackTFCgnVNEPOnboxMdXN3ZGH1l91djR7bk9DzaxyKFGJ2SXg39BcZxJM6tBip0ui3dDEkULDSbkuzpaOA&url360=https://cs542402.vk.me/6/u313752528/videos/68ec547387.360.mp4?extra=JVSeMzU2-msXVuseackTFCgnVNEPOnboxMdXN3ZGH1l91djR7bk9DzaxyKFGJ2SXg39BcZxJM6tBip0ui3dDEkULDSbkuzpaOA&url480=https://cs542402.vk.me/6/u313752528/videos/68ec547387.480.mp4?extra=JVSeMzU2-msXVuseackTFCgnVNEPOnboxMdXN3ZGH1l91djR7bk9DzaxyKFGJ2SXg39BcZxJM6tBip0ui3dDEkULDSbkuzpaOA&url720=https://cs542402.vk.me/6/u313752528/videos/68ec547387.720.mp4?extra=JVSeMzU2-msXVuseackTFCgnVNEPOnboxMdXN3ZGH1l91djR7bk9DzaxyKFGJ2SXg39BcZxJM6tBip0ui3dDEkULDSbkuzpaOA&jpg=https://pp.vk.me/c621922/v621922528/26d5c/Hqe6Th45LmA.jpg&timeline_thumbs=1&timeline_thumbs_jpg=https://pp.vk.me/c623120/v623120528/403ab/W0o1WeSlf5o.jpg,https://pp.vk.me/c622717/v622717528/3bcdc/enzNOAL2PJw.jpg,https://pp.vk.me/c625626/v625626528/3edb9/y44h0j9UBT4.jpg&timeline_thumbs_per_row=10&timeline_thumbs_per_image=100&timeline_thumbs_total=279&timeline_thumb_width=133&timeline_thumb_height=75&ip_subm=1&proxy=psv4&https=1&video_ext=1&is_yandex=0&apm;&is_vk=1&is_ext=1&referrer=&lang_add=Add+to+My+Videos&lang_added=Video+added+to+My+Videos&lang_share=Share&lang_like=Like&lang_volume_on=Unmute&lang_volume_off=Mute&lang_volume=Volume&lang_hdsd=Change+Video+Quality&lang_open_popup=Expand&lang_fullscreen=Full+Screen&lang_window=Minimize&lang_rotate=Rotate&lang_ads_link=Advertiser%27s+Site&lang_ads=Ads&lang_ads_skip=Skip+ad&lang_next=Next+video&lang_replay=Replay&lang_next_cancel=Cancel&lang_ads_skip_time=Skip+ads+in+%7Btime%7D&lang_report_problem=Report+a+problem..&video_play_hd=Watch+in+HD&video_stop_loading=Stop+Download&video_player_version=VK+Video+Player&goto_orig_video=Go+to+Video&video_get_video_code=Copy+video+code&video_load_error=The+video+has+not+uploaded+yet+or+the+server+is+not+available&video_get_current_url=Copy+frame+link"></param> <param name="wmode" value="opaque"></param> <embed id="flash_video_obj" align="top" src="/swf/video.swf?94" type="application/x-shockwave-flash" allowscriptaccess="always" allowfullscreen="true" width="100%" height="100%" wmode="opaque" flashvars=uid=313752528&vid=171193750&oid=313752528&host=https://cs542402.vk.me/&vtag=68ec547387&ltag=l_f4d9714c&vkid=171193750&md_title=Hi.Ki3+ep08&md_author=Kadem+%26%23199%3Belik&author_href=/id313752528&hd=3&no_flv=1&hd_def=0&dbg_on=0&t=0&duration=1399&thumb=https://pp.vk.me/c621922/v621922528/26d5d/buRyDSImp1Y.jpg&hash=17cc43bba064a6bd4c887b2b336e28a1&hash2=8a5ce8fb95dac3b7&angle=0&img_angle=0&repeat=0&show_ads=0&show_ads_postroll=0&legal_owner=0&eid1=0&slot=0&g=0&a=0&puid34=0&water_mark=&can_rotate=1&no_adfox=1&ads_preview=0&puid4=0&url240=https://cs542402.vk.me/6/u313752528/videos/68ec547387.240.mp4?extra=JVSeMzU2-msXVuseackTFCgnVNEPOnboxMdXN3ZGH1l91djR7bk9DzaxyKFGJ2SXg39BcZxJM6tBip0ui3dDEkULDSbkuzpaOA&url360=https://cs542402.vk.me/6/u313752528/videos/68ec547387.360.mp4?extra=JVSeMzU2-msXVuseackTFCgnVNEPOnboxMdXN3ZGH1l91djR7bk9DzaxyKFGJ2SXg39BcZxJM6tBip0ui3dDEkULDSbkuzpaOA&url480=https://cs542402.vk.me/6/u313752528/videos/68ec547387.480.mp4?extra=JVSeMzU2-msXVuseackTFCgnVNEPOnboxMdXN3ZGH1l91djR7bk9DzaxyKFGJ2SXg39BcZxJM6tBip0ui3dDEkULDSbkuzpaOA&url720=https://cs542402.vk.me/6/u313752528/videos/68ec547387.720.mp4?extra=JVSeMzU2-msXVuseackTFCgnVNEPOnboxMdXN3ZGH1l91djR7bk9DzaxyKFGJ2SXg39BcZxJM6tBip0ui3dDEkULDSbkuzpaOA&jpg=https://pp.vk.me/c621922/v621922528/26d5c/Hqe6Th45LmA.jpg&timeline_thumbs=1&timeline_thumbs_jpg=https://pp.vk.me/c623120/v623120528/403ab/W0o1WeSlf5o.jpg,https://pp.vk.me/c622717/v622717528/3bcdc/enzNOAL2PJw.jpg,https://pp.vk.me/c625626/v625626528/3edb9/y44h0j9UBT4.jpg&timeline_thumbs_per_row=10&timeline_thumbs_per_image=100&timeline_thumbs_total=279&timeline_thumb_width=133&timeline_thumb_height=75&ip_subm=1&proxy=psv4&https=1&video_ext=1&is_yandex=0&apm;&is_vk=1&is_ext=1&referrer=&lang_add=Add+to+My+Videos&lang_added=Video+added+to+My+Videos&lang_share=Share&lang_like=Like&lang_volume_on=Unmute&lang_volume_off=Mute&lang_volume=Volume&lang_hdsd=Change+Video+Quality&lang_open_popup=Expand&lang_fullscreen=Full+Screen&lang_window=Minimize&lang_rotate=Rotate&lang_ads_link=Advertiser%27s+Site&lang_ads=Ads&lang_ads_skip=Skip+ad&lang_next=Next+video&lang_replay=Replay&lang_next_cancel=Cancel&lang_ads_skip_time=Skip+ads+in+%7Btime%7D&lang_report_problem=Report+a+problem..&video_play_hd=Watch+in+HD&video_stop_loading=Stop+Download&video_player_version=VK+Video+Player&goto_orig_video=Go+to+Video&video_get_video_code=Copy+video+code&video_load_error=The+video+has+not+uploaded+yet+or+the+server+is+not+available&video_get_current_url=Copy+frame+link></embed> </object>
这应该会给你一些想法...
sed 's/&/\n/g' | grep url240 | cut -d= -f2
用“&”连接的分隔参数，grep需要的行，得到=号右边。
如果内容中有=号，按变量名长度裁剪即可。例如
var="url240"; sed 's/&/\n/g' | grep $var | cut -c $((${#var}+2))-
非常感谢 karakfa 因为你的想法！
我用这个命令解决了我的问题：
sed 's/&/\n/g' MyFile | grep url240 | sed -n '1p'
第一个 sed 命令将 & 替换为 space 字符，因此之后使用 grep 我得到 3 行（最后一行很长）。在那之后 sed 我从输出中删除了第一行，现在它运行良好。但我的输出看起来像那样
url240=https://cs542402.vk.me/6/u313752528/videos/68ec547387.240.mp4?extra=JVSeMzU2-msXVuseackTFCgnVNEPOnboxMdXN3ZGH1l91djR7bk9DzaxyKFGJ2SXg39BcZxJM6tBip0ui3dDEkULDSbkuzpaOA
所以，我添加了 tail -c +8，我的最终命令如下所示
sed 's/&/\n/g' MyFile | grep url240 | sed -n '1p' | tail -c +8
我有一个 html/text 文件，其中包含可下载的 URL 视频，但我需要将文件剪切为 link。
比如以url240=或url360=或480等开头，有URLLinkOfUrl，以&jpg...[=20结束=]
我想得到像 url240=https://cs542402.vk.me/6/u313752528/videos/68ec547387.240.mp4?extra=JVSeMzU2-msXVuseackTFCgnVNEPOnboxMdXN3ZGH1l91djR7bk9DzaxyKFGJ2SXg39BcZxJM6tBip0ui3dDEkULDSbkuzpaOA 或 这样的输出，这就是我的观点 -->> https://cs542402.vk.me/6/u313752528/videos/68ec547387.240.mp4?extra=JVSeMzU2-msXVuseackTFCgnVNEPOnboxMdXN3ZGH1l91djR7bk9DzaxyKFGJ2SXg39BcZxJM6tBip0ui3dDEkULDSbkuzpaOA
我该怎么办？
我的目标是抓取视频 link 并从不使用浏览器或不使用手动操作的终端下载它。我打算编写一个 shell 脚本来自动执行此操作，因此我需要将 link 分配为变量，然后我将使用 axel $variable 。 （如果有人想知道我是如何得到的，我使用 wget 来获取 html/text 个文件。）
Here是我原来的html/text文件
我有文件的小文本:
</param> <param name="flashvars" value="uid=313752528&vid=171193750&oid=313752528&host=https://cs542402.vk.me/&vtag=68ec547387&ltag=l_f4d9714c&vkid=171193750&md_title=Hi.Ki3+ep08&md_author=Kadem+%26%23199%3Belik&author_href=/id313752528&hd=3&no_flv=1&hd_def=0&dbg_on=0&t=0&duration=1399&thumb=https://pp.vk.me/c621922/v621922528/26d5d/buRyDSImp1Y.jpg&hash=17cc43bba064a6bd4c887b2b336e28a1&hash2=8a5ce8fb95dac3b7&angle=0&img_angle=0&repeat=0&show_ads=0&show_ads_postroll=0&legal_owner=0&eid1=0&slot=0&g=0&a=0&puid34=0&water_mark=&can_rotate=1&no_adfox=1&ads_preview=0&puid4=0&url240=https://cs542402.vk.me/6/u313752528/videos/68ec547387.240.mp4?extra=JVSeMzU2-msXVuseackTFCgnVNEPOnboxMdXN3ZGH1l91djR7bk9DzaxyKFGJ2SXg39BcZxJM6tBip0ui3dDEkULDSbkuzpaOA&url360=https://cs542402.vk.me/6/u313752528/videos/68ec547387.360.mp4?extra=JVSeMzU2-msXVuseackTFCgnVNEPOnboxMdXN3ZGH1l91djR7bk9DzaxyKFGJ2SXg39BcZxJM6tBip0ui3dDEkULDSbkuzpaOA&url480=https://cs542402.vk.me/6/u313752528/videos/68ec547387.480.mp4?extra=JVSeMzU2-msXVuseackTFCgnVNEPOnboxMdXN3ZGH1l91djR7bk9DzaxyKFGJ2SXg39BcZxJM6tBip0ui3dDEkULDSbkuzpaOA&url720=https://cs542402.vk.me/6/u313752528/videos/68ec547387.720.mp4?extra=JVSeMzU2-msXVuseackTFCgnVNEPOnboxMdXN3ZGH1l91djR7bk9DzaxyKFGJ2SXg39BcZxJM6tBip0ui3dDEkULDSbkuzpaOA&jpg=https://pp.vk.me/c621922/v621922528/26d5c/Hqe6Th45LmA.jpg&timeline_thumbs=1&timeline_thumbs_jpg=https://pp.vk.me/c623120/v623120528/403ab/W0o1WeSlf5o.jpg,https://pp.vk.me/c622717/v622717528/3bcdc/enzNOAL2PJw.jpg,https://pp.vk.me/c625626/v625626528/3edb9/y44h0j9UBT4.jpg&timeline_thumbs_per_row=10&timeline_thumbs_per_image=100&timeline_thumbs_total=279&timeline_thumb_width=133&timeline_thumb_height=75&ip_subm=1&proxy=psv4&https=1&video_ext=1&is_yandex=0&apm;&is_vk=1&is_ext=1&referrer=&lang_add=Add+to+My+Videos&lang_added=Video+added+to+My+Videos&lang_share=Share&lang_like=Like&lang_volume_on=Unmute&lang_volume_off=Mute&lang_volume=Volume&lang_hdsd=Change+Video+Quality&lang_open_popup=Expand&lang_fullscreen=Full+Screen&lang_window=Minimize&lang_rotate=Rotate&lang_ads_link=Advertiser%27s+Site&lang_ads=Ads&lang_ads_skip=Skip+ad&lang_next=Next+video&lang_replay=Replay&lang_next_cancel=Cancel&lang_ads_skip_time=Skip+ads+in+%7Btime%7D&lang_report_problem=Report+a+problem..&video_play_hd=Watch+in+HD&video_stop_loading=Stop+Download&video_player_version=VK+Video+Player&goto_orig_video=Go+to+Video&video_get_video_code=Copy+video+code&video_load_error=The+video+has+not+uploaded+yet+or+the+server+is+not+available&video_get_current_url=Copy+frame+link"></param> <param name="wmode" value="opaque"></param> <embed id="flash_video_obj" align="top" src="/swf/video.swf?94" type="application/x-shockwave-flash" allowscriptaccess="always" allowfullscreen="true" width="100%" height="100%" wmode="opaque" flashvars=uid=313752528&vid=171193750&oid=313752528&host=https://cs542402.vk.me/&vtag=68ec547387&ltag=l_f4d9714c&vkid=171193750&md_title=Hi.Ki3+ep08&md_author=Kadem+%26%23199%3Belik&author_href=/id313752528&hd=3&no_flv=1&hd_def=0&dbg_on=0&t=0&duration=1399&thumb=https://pp.vk.me/c621922/v621922528/26d5d/buRyDSImp1Y.jpg&hash=17cc43bba064a6bd4c887b2b336e28a1&hash2=8a5ce8fb95dac3b7&angle=0&img_angle=0&repeat=0&show_ads=0&show_ads_postroll=0&legal_owner=0&eid1=0&slot=0&g=0&a=0&puid34=0&water_mark=&can_rotate=1&no_adfox=1&ads_preview=0&puid4=0&url240=https://cs542402.vk.me/6/u313752528/videos/68ec547387.240.mp4?extra=JVSeMzU2-msXVuseackTFCgnVNEPOnboxMdXN3ZGH1l91djR7bk9DzaxyKFGJ2SXg39BcZxJM6tBip0ui3dDEkULDSbkuzpaOA&url360=https://cs542402.vk.me/6/u313752528/videos/68ec547387.360.mp4?extra=JVSeMzU2-msXVuseackTFCgnVNEPOnboxMdXN3ZGH1l91djR7bk9DzaxyKFGJ2SXg39BcZxJM6tBip0ui3dDEkULDSbkuzpaOA&url480=https://cs542402.vk.me/6/u313752528/videos/68ec547387.480.mp4?extra=JVSeMzU2-msXVuseackTFCgnVNEPOnboxMdXN3ZGH1l91djR7bk9DzaxyKFGJ2SXg39BcZxJM6tBip0ui3dDEkULDSbkuzpaOA&url720=https://cs542402.vk.me/6/u313752528/videos/68ec547387.720.mp4?extra=JVSeMzU2-msXVuseackTFCgnVNEPOnboxMdXN3ZGH1l91djR7bk9DzaxyKFGJ2SXg39BcZxJM6tBip0ui3dDEkULDSbkuzpaOA&jpg=https://pp.vk.me/c621922/v621922528/26d5c/Hqe6Th45LmA.jpg&timeline_thumbs=1&timeline_thumbs_jpg=https://pp.vk.me/c623120/v623120528/403ab/W0o1WeSlf5o.jpg,https://pp.vk.me/c622717/v622717528/3bcdc/enzNOAL2PJw.jpg,https://pp.vk.me/c625626/v625626528/3edb9/y44h0j9UBT4.jpg&timeline_thumbs_per_row=10&timeline_thumbs_per_image=100&timeline_thumbs_total=279&timeline_thumb_width=133&timeline_thumb_height=75&ip_subm=1&proxy=psv4&https=1&video_ext=1&is_yandex=0&apm;&is_vk=1&is_ext=1&referrer=&lang_add=Add+to+My+Videos&lang_added=Video+added+to+My+Videos&lang_share=Share&lang_like=Like&lang_volume_on=Unmute&lang_volume_off=Mute&lang_volume=Volume&lang_hdsd=Change+Video+Quality&lang_open_popup=Expand&lang_fullscreen=Full+Screen&lang_window=Minimize&lang_rotate=Rotate&lang_ads_link=Advertiser%27s+Site&lang_ads=Ads&lang_ads_skip=Skip+ad&lang_next=Next+video&lang_replay=Replay&lang_next_cancel=Cancel&lang_ads_skip_time=Skip+ads+in+%7Btime%7D&lang_report_problem=Report+a+problem..&video_play_hd=Watch+in+HD&video_stop_loading=Stop+Download&video_player_version=VK+Video+Player&goto_orig_video=Go+to+Video&video_get_video_code=Copy+video+code&video_load_error=The+video+has+not+uploaded+yet+or+the+server+is+not+available&video_get_current_url=Copy+frame+link></embed> </object>
这应该会给你一些想法...
sed 's/&/\n/g' | grep url240 | cut -d= -f2
用“&”连接的分隔参数，grep需要的行，得到=号右边。
如果内容中有=号，按变量名长度裁剪即可。例如
var="url240"; sed 's/&/\n/g' | grep $var | cut -c $((${#var}+2))-
非常感谢 karakfa 因为你的想法！ 我用这个命令解决了我的问题：
sed 's/&/\n/g' MyFile | grep url240 | sed -n '1p'
第一个 sed 命令将 & 替换为 space 字符，因此之后使用 grep 我得到 3 行（最后一行很长）。在那之后 sed 我从输出中删除了第一行，现在它运行良好。但我的输出看起来像那样
url240=https://cs542402.vk.me/6/u313752528/videos/68ec547387.240.mp4?extra=JVSeMzU2-msXVuseackTFCgnVNEPOnboxMdXN3ZGH1l91djR7bk9DzaxyKFGJ2SXg39BcZxJM6tBip0ui3dDEkULDSbkuzpaOA
所以，我添加了 tail -c +8，我的最终命令如下所示
sed 's/&/\n/g' MyFile | grep url240 | sed -n '1p' | tail -c +8