最近我遇到了一个问题，我正在开发一些 PowerShell 脚本来管理和更新一些数字显示器。请参阅下面我正在进行的工作（但还远远没有完成）。
我正在努力通过终端或任何方式（自动文本文件或通过命令）输出 Chromium 中活动或当前打开的选项卡。我试图实现的想法是，如果当前选项卡与需要打开的选项卡相对应，则跳过强制刷新（关闭并打开 Chromium）。
我努力了兄弟但根本无法让它工作，似乎是 Ubuntu 和 Chromium 的问题。有人知道有什么方法可以解决这个问题吗？
我已经能够获取已打开的活动选项卡的历史记录，但这只会在手动打开浏览器而不是通过终端打开浏览器时更新。
脚本需要工作，并且在发生故障时需要错误日志记录/电子邮件通知，以便可以对屏幕进行物理调查。第一步就是让它工作……当它每 30 分钟刷新一次时，它的表现很糟糕——我宁愿让它保持活动状态。我知道这需要工作，因此对所有代码的建议持开放态度。我也将使用函数，但也努力让它们按我希望的方式工作……
我期待您的建议。
##SCRIPT TO RERESH AND MANAGE PI BOXES FOR DISPLAYS##
$getr=$null;
##SET VARIABLES TO GET DATES AND FOR SPECIFIC TIMES IN REGARDS TO UPDATES
$Calendar = Get-Date
$updatestart = Get-Date -Hour 11 -Minute 55
$updatecutoff = Get-Date -Hour 12 -Minute 01
##SET VARIABLES FOR PI INSTRUCTIONS
$exitchrome = "killall -9 chromium-browser &>/dev/null; exit;" ##QUITS BROWSER AND EXITS SCRIPT - HAS TO BE DONE AS CANNOT BE RUN WITH FOLLWOING COMMANDS
Get-Content -Path "C:\temp\ip.txt" | Foreach-Object { ##LOOP THROUGH CONTENTS OF TEXT FILE - IP.TXT
$textfile = $_;
$pos = $textfile.IndexOf("|") ## LOOK FOR PIPE CHARECTER IN TEXT FILE
$link_string = $textfile.Substring($pos+1) ##CONTENTS AFTER PIPE CHARECTER
$ip = $textfile.Substring(0, $pos) ##CONTENTS BEFORE PIPE CHARECTER
echo $ip
$chrome = "DISPLAY=:0 chromium-browser " + $link_string + " --kiosk --disable-session-crashed-bubble --disable-infobars &> /dev/null &" ##STARTS BROWSER IN KIOSK MODE ON DESKTOP WITH THE DEFINED URLS - ALL ON SCREEN MESSAGES DISABLED
##PLAY CODE##
$i = 0
$c = 0
$w = 1
$wb_chk = "cat -e ~/.config/chromium/Default/Sessions/Tabs_* | sed -e 's/\^@/\n/g' -e '/_\/chrome/d' | grep -Po '(http|https)://\K.*' | sort -u" ##CHECK BROWSER FOR OPEN TABS ASSIGNED TO VARIABLE
$wb_chk_res = ssh orangepi@"$ip" -X "$wb_chk" | Out-String
foreach($url_array in -split $link_string)
{
$url_array_pos = $url_array.IndexOf("/") ## LOOK FOR CHARECTER RETRUN IN VARIABLE
$url_array = $url_array.Substring($url_array_pos+2) ##REMOVE CONTENTS AFTER CHARECTER RETRUN
$i++
foreach($wbl_chk in -split $wb_chk_res)
{
$w++
if ($wbl_chk -eq $url_array) {
$c++
}
}
}
echo "$w websites were checked"
echo "There are $c live on the display"
echo "$c websites match the $i URLS in the config file"
##PLAY CODE##
If ($Calendar.Day -eq '28' -AND $Calendar.TimeOfDay -gt $updatestart.TimeOfDay -AND $Calendar.TimeOfDay -lt $updatecutoff.TimeOfDay) { ##IF END OF THE MONTH, RUN UPDATES
ssh -p 222 pi@"$ip" -X "sudo apt-get update; sudo apt-get upgrade -y; sudo reboot;"
Start-Sleep -s 60
}
##CEHCK DISPLAY RES - CANNOT TO GET TO WORK AS A FUCNTION...
$getr = ssh orangepi@"$ip" -X "xrandr -display :0.0;" | Out-String
$res_pos = $getr.IndexOf(",") ## LOOK FOR COMMA CHARECTER IN VARIABLE
$getr = $getr.Substring($res_pos+2) ##REMOVE CONTENTS AFTER COMMA CHARECTER
$res_pos = $getr.IndexOf(",") ## LOOK FOR COMMA CHARECTER IN VARIABLE
$getr = $getr.Substring(0, $res_pos) ##REMOVE CONTENTS BEFORE COMMA CHARECTER
$res_pos = $getr.IndexOf(" ") ## LOOK FOR CHARECTER RETRUN IN VARIABLE
$getr = $getr.Substring($res_pos+1) ##REMOVE CONTENTS AFTER CHARECTER RETRUN
$uptime = ssh orangepi@"$ip" -X "awk '{print $1}' /proc/uptime" | Out-String
$up_pos = $uptime.IndexOf(" ") ## LOOK FOR CHARECTER RETRUN IN VARIABLE
$uptime = $uptime.Substring(0,$up_pos) ##CONTENTS AFTER CHARECTER RETRUN
echo $uptime
echo $getr
if ($uptime -lt "1800.00" -Or $getr -ne "1920 x 1080") {
echo "Forcing Display Resolution";
ssh orangepi@"$ip" -X "sudo service lightdm restart;"
Start-Sleep -s 10;
ssh orangepi@"$ip" -X "$chrome";
Start-Sleep -s 10;
ssh orangepi@"$ip" -X "$exitchrome";
Start-Sleep -s 10;
$getr=$null;
}
$MATICS = select-string -pattern "xxx.my.leadermes.com" -InputObject $link_string ##LOOK FOR MATICS URL FOR SYNTHEIC MOUSE CLICKS
if ($MATICS -ne $null)
{
$getr = ssh orangepi@"$ip" -X "xrandr -display :0.0;" | Out-String
$res_pos = $getr.IndexOf(",") ## LOOK FOR COMMA CHARECTER IN VARIABLE
$getr = $getr.Substring($res_pos+2) ##CONTENTS AFTER COMMA CHARECTER
$res_pos = $getr.IndexOf(",") ## LOOK FOR COMMA CHARECTER IN VARIABLE
$getr = $getr.Substring(0, $res_pos) ##CONTENTS BEFORE COMMA CHARECTER
$res_pos = $getr.IndexOf(" ") ## LOOK FOR CHARECTER RETRUN IN VARIABLE
$getr = $getr.Substring($res_pos+1) ##CONTENTS AFTER CHARECTER RETRUN
echo "MATICS ON DISPLAY";
ssh orangepi@"$ip" -X "$exitchrome";
ssh orangepi@"$ip" -X "$chrome";
if ($getr -eq "1920 x 1080") {
echo "$getr live";
Start-Sleep -s 15
ssh orangepi@"$ip" -X "DISPLAY=:0 xdotool key Return; exit;"
Start-Sleep -s 20
ssh orangepi@"$ip" -X "DISPLAY=:0 xdotool key Tab Tab space mousemove 220 60 click 1; exit;"
Start-Sleep -s 20
ssh orangepi@"$ip" -X "DISPLAY=:0 xdotool mousemove 1860 180 click 1 mousemove 1920 1080; exit;"
$getr=$null;
}
}
else
{
echo "MATICS IS NOT ON THIS DISPLAY";
ssh orangepi@"$ip" -X "$exitchrome";
ssh orangepi@"$ip" -X "$chrome";
}
}
答案1
我想我再次找到了我自己的问题的答案...据我所知，没有办法快速访问 Chrome 或其他网络浏览器中的打开 URL......因为这可能被视为安全风险。
我的解决方法是循环遍历每个打开的窗口（谢天谢地，只有 Chrome，但这也可以在代码中排除）并循环遍历选项卡以一次获取一个。命令 wmctrl -l 帮助我实现了这一点。
我仍然怀疑可能存在更好的方法，但这是我们目前所采用的方法。
代码仍在运行中，如下所示：
Clear-Host
## SCRIPT TO RERESH AND MANAGE PI BOXES FOR DISPLAYS##
$getr=$null;
## SET VARIABLES TO GET DATES AND FOR SPECIFIC TIMES IN REGARDS TO UPDATES
$Calendar = Get-Date;
$updatestart = Get-Date -Hour 11 -Minute 55;
$updatecutoff = Get-Date -Hour 12 -Minute 01;
## SET VARIABLES FOR PI INSTRUCTIONS
$exitchrome = "killall -9 chromium-browser &>/dev/null; exit;" ## QUITS BROWSER AND EXITS SCRIPT - HAS TO BE DONE AS CANNOT BE RUN WITH FOLLWOING COMMANDS
Get-Content -Path "C:\Users\xxxx\Documents\DigitalDisplays\display-config.txt" | Foreach-Object { ## START OF LOOP THROUGH CONTENTS OF TEXT FILE - IP.TXT - THIS WILL LOOP THROUGH EVERY IP ADDRESS (SCREEN) ON FILE.
$urlcount = 0;
$url_match_tc = 0;
$url_match_tf = 0;
$textfile = $_;
$chrome = $null;
$chk_b_string = $null;
$chk_b_array_string = $null;
$w=1;
$no_keywordc = 0;
$web_c = 0;
$iic = 0;
$ffc = 0;
$browser_off = 0;
$pos = $textfile.IndexOf("|"); ## LOOK FOR PIPE CHARECTER IN TEXT FILE
$link_string = $textfile.Substring($pos+1); ## CONTENTS AFTER PIPE CHARECTER
$ip = $textfile.Substring(0, $pos) ## CONTENTS BEFORE PIPE CHARECTER
echo "Checking Screen - $ip";
$chrome = "DISPLAY=:0 chromium-browser " + $link_string + " --kiosk --disable-session-crashed-bubble --disable-infobars &> /dev/null &"; ##S TARTS BROWSER IN KIOSK MODE ON DESKTOP WITH THE DEFINED URLS - ALL ON SCREEN MESSAGES DISABLED
## UPDATES SECTION ##
If ($Calendar.Day -eq '28' -AND $Calendar.TimeOfDay -gt $updatestart.TimeOfDay -AND $Calendar.TimeOfDay -lt $updatecutoff.TimeOfDay) { ## IF END OF THE MONTH, RUN UPDATES
ssh -p 222 pi@"$ip" -X "sudo nohup apt-get update; sudo nohup apt-get upgrade -y; sudo nohup reboot;" ## NOHUP MEANS NO DISPLAY
Start-Sleep -s 300;
}
## END OF UPDATES SECTION##
## FIRST CHECK OF UPTIME AND SCREEN RESOLUTION##
## CHECK DISPLAY RES - CANNOT TO GET TO WORK AS A FUCNTION...
$getr = ssh orangepi@"$ip" -X "xrandr -display :0.0;" | Out-String;
$res_pos = $getr.IndexOf(","); ## LOOK FOR COMMA CHARECTER IN VARIABLE
$getr = $getr.Substring($res_pos+2); ## REMOVE CONTENTS AFTER COMMA CHARECTER
$res_pos = $getr.IndexOf(","); ## LOOK FOR COMMA CHARECTER IN VARIABLE
$getr = $getr.Substring(0, $res_pos); ## REMOVE CONTENTS BEFORE COMMA CHARECTER
$res_pos = $getr.IndexOf(" "); ## LOOK FOR CHARECTER RETRUN IN VARIABLE
$getr = $getr.Substring($res_pos+1); ## REMOVE CONTENTS AFTER CHARECTER RETRUN
$uptime = ssh orangepi@"$ip" -X "awk '{print $1}' /proc/uptime" | Out-String;
$up_pos = $uptime.IndexOf(" "); ## LOOK FOR CHARECTER RETRUN IN VARIABLE
$uptime = $uptime.Substring(0,$up_pos); ## CONTENTS AFTER CHARECTER RETRUN
$uptime = [int]$uptime;
$ts = [timespan]::fromseconds($uptime).tostring();
echo "Uptime = $ts";
echo "Screen Resolution = $getr";
if ([int]$uptime -lt 1800.00 -Or $getr -ne "1920 x 1080") {##CHECK SCREEN RESOLUTION AND UPTIME
echo "Resetting Display Resolution as just started up or not Default Resolution";
##ssh orangepi@"$ip" -X "sudo service lightdm restart;"
##Start-Sleep -s 10;
##ssh orangepi@"$ip" -X "$chrome";
##Start-Sleep -s 10;
##ssh orangepi@"$ip" -X "$exitchrome";
##Start-Sleep -s 10;
$getr=$null;
}
## ***END*** FIRST CHECK OF UPTIME AND SCREEN RESOLUTION ***END*** ##
## BROWSER CHECK SECTION ##
$chrome_check_open = ssh orangepi@"$ip" -X "DISPLAY=:0 wmctrl -l" | Out-String;
$chrome_check = $chrome_check_open.Contains("Chromium");
if ($chrome_check -eq 0) {
$host.UI.RawUI.ForegroundColor = "Red";
echo "BROWSER IS NOT OPEN!";
$browser_off = 1;
$host.UI.RawUI.ForegroundColor = "White";
} else {
echo "BROWSER CHECKING RUNNING NOW";
## CODE TO LOOK THROUGH OPEN TABS - LOOPS THROUGH TABS DEPENINDING ON HOW MANY URL's IN CONFIG FILE
foreach($url_array in -split $link_string) { ## Counts the URL's in the IP/Config text file
$urlcount++;
}
foreach($url2_array in -split $link_string) {
if ($w -lt $urlcount) { ## SIMPLE COUNT TO CHECK AGAINST SITES IN THE CONFIG TXT FILE - IF LESS THAN WHAT IS THE CONFIG FILE DO BELOW AND ON FINAL ONE DO FINAL CHECK
$chk_b_open = ssh orangepi@"$ip" -X "DISPLAY=:0 wmctrl -l" | Out-String; ## THIS GET THE OPEN WINDOW HEADERS - THE LAST ONE IS CHROMIUM
$chk_b_open = ([regex]::Matches($chk_b_open,'.','RightToLeft') | ForEach {$_.value}) -join '' | Out-String; ##EASIEST TO FLIP THE STRING BACK TO FRONT
$chk_b_pos = $chk_b_open.IndexOf("0"); ## LOOK FOR ZERO CHARECTER IN VARIABLE - BEST IDENTIFIABLE CHARECTER IN THIS SET
$chk_b_open = $chk_b_open.Substring(0,$chk_b_pos) ## CONTENTS BEFORE ZERO CHARECTER
$chk_b_open = ([regex]::Matches($chk_b_open,'.','RightToLeft') | ForEach {$_.value}) -join '' | Out-String; ##RETURN STRING TO PROPER ORIENTATION
$chk_b_string = $chk_b_open.substring(1); ## TIDYING STRING TO RID OF FIRST BLANK CHARECTER
$chk_b_string = $chk_b_string.replace(' ','-'); ## THERE ARE BLANK SPACES IN THE STRING SO WE REPLACE THOSE WITH "-"
$chk_b_array_string = "$chk_b_array_string $chk_b_string"; ## BUILDS ARRAY OF ALL OPEN TABS TO CHECK AGAINST LATER
ssh orangepi@"$ip" -X "DISPLAY=:0 xdotool keydown ctrl key 0xff09 keyup ctrl"; ## ROTATES TAB TO NEXT
$w++; ## INCREASES BY ONE ON PROGRESS OF PREDICTED OPEN TABS
Start-Sleep -s 0.5;
} else { ## SAME AS ABOVE BUT THE FINAL CHECK - THIS IS DEPICTED BY THE NO INCREASE VARIABLE $W AND THE SLEEP DURATION OF HALF A SECOND
$chk_b_open = ssh orangepi@"$ip" -X "DISPLAY=:0 wmctrl -l" | Out-String;
$chk_b_open = ([regex]::Matches($chk_b_open,'.','RightToLeft') | ForEach {$_.value}) -join '' | Out-String;
$chk_b_pos = $chk_b_open.IndexOf("0"); ## LOOK FOR ZERO CHARECTER IN VARIABLE - BEST IDENTIFIABLE CHARECTER IN THIS SET
$chk_b_open = $chk_b_open.Substring(0,$chk_b_pos); ## CONTENTS BEFORE ZERO CHARECTER
$chk_b_open = ([regex]::Matches($chk_b_open,'.','RightToLeft') | ForEach {$_.value}) -join '' | Out-String;
$chk_b_string = $chk_b_open.substring(1);
$chk_b_string = $chk_b_string.replace(' ','-');
$chk_b_array_string = "$chk_b_array_string $chk_b_string";
ssh orangepi@"$ip" -X "DISPLAY=:0 xdotool keydown ctrl key 0xff09 keyup ctrl";
}
}
## THIS SHOULD LEAVE US NOW WITH A FULL LIST ARRAY OF ALL OPEN TABS THAT WE CAN CHCK AGAINST
## THE ABOVE COULD BE SIMPLIFIED WITH THE USE OF FUNCTIONS IN THE FUTURE TO REDUCE CODE LENGTH
## ***END*** CODE TO LOOK THROUGH OPEN TABS - LOOPS THROUGH TABS DEPENINDING ON HOW MANY URL's IN CONFIG FILE ***END*** ##
## CHECK CONFIG FILE, AGAINST OPEN TABS USING THE KEYWORD FROM A URL DIRECTORY LIST ##
foreach($url3_array in -split $link_string) { ## STARTS A NEW ARRAY OF PULLING URLS FROM THE CONFIG FILE
$keyword = $null;## RESETS THE KEYWORD VARIABLE AT THE START OF THE NEXT WEBSITE IN THE CONFIG
$no_keyword = 0;
$ii = 0;
$ff = 0;
$web_c++;
Get-Content -Path "C:\Users\xxxx\Documents\DigitalDisplays\header-ident.txt" | Foreach-Object { ## START ARRAY FROM THE HEADER IDENTITY DIRECTORY
## THIS IS ANNOYING AS YOU NEED A STATIC IDENTIFIER FOR EACH WEBSITE AND IF ONE IS NOT LISTED IT WILL WORK AS I HAVE PROGRAMMED TO DO SO BUT WILL ALWAYS REFRESH WHICH IN TURN WILL TAKE LONGER
$headerfile = $_;
$ident_match = $headerfile.Contains($url3_array); ## THIS MATCHES THE URL BEING CHECKED AGAINST THE KEYWORD LIST (ALSO LISTS URL)
if ($ident_match -eq 1) {
$chk_ident_pos = $headerfile.IndexOf("|"); ## LOOK FOR PIPE CHARECTER IN VARIABLE
$keyword = $headerfile.Substring($chk_ident_pos+1); ## CONTENTS BEFORE PIPE CHARECTER - THIS IDENTIFIES THE KEYWORD WE WILL NBEED TO USE FOR THIS WEBSITE
}
}
if (!$keyword) { ## IF KEYWORD IS EMPTY OR NO MATCH IS RETURNED - SKIP AND INCREASE VARIABLE TO IDENTIFY THESE
$ff++;
$no_keyword++;
$host.UI.RawUI.ForegroundColor = "Red"; ## TURNS TEXT RED BECUASE THERE IS NO KEYWORD
echo " There is no Keyword listed for $url3_array, please add one - the Screen will refresh until this is added";
$host.UI.RawUI.ForegroundColor = "White"; ## RETURNS FONT BACK
} else {
$host.UI.RawUI.ForegroundColor = "Green"; ## TURNS TEXT GREEN AS KEYWORD
$host.UI.RawUI.ForegroundColor = "White"; ## RETURNS FONT BACK
foreach($c_url_array in -split $chk_b_array_string) { ## FINAL ARRAY TO GET OPEN WINDOW ARRAY SET IN THE SECTION CODE ABOVE (CODE TO LOOK THROUGH OPEN TABS - LOOPS THROUGH TABS DEPENINDING ON HOW MANY URL's IN CONFIG FILE)
$keyword_match = $c_url_array.Contains($keyword); ## MATCHES THE KEYWORD
if ($keyword_match -eq 1) { ## IF MATCH IS FOUND - INCREASE COUNT $ii AND IF ALREADY EXISISTS (DUPLICATES) FORCE THAT VALUE TO BE 1 - THIS MUST REMAIN 1 AS THERE WAS A MATCH
$ii++;
if ($ii -gt 0) {
$ii = 1;
}
} else {
$ff++; ## IF THERE WAS NOT A MATCH INCREASE THE $ff VARIABLE BY ONE AND AGAIN FORCE THAT ONLY TO BE 1
if ($ff -gt 0) {
$ff = 1;
}
}
}
}
if ($ii -gt 0) { ## IF THERE WAS A MATCH AFTER ALL CHECK HAVE BEEN DONE AGAINST OPEN WINDOWS THEN WE NEED TO RESET $ff VARILABLE TO 0 AS THIS WAS NO IMPORTANT
$ff = 0;
}
$iic = $iic + $ii; ## ADD ALL SUCCESSFUL MATCHES TOGETHER
$ffc = $ffc + $ff; ## ADD ALL SITES NOT LIVE TOGETHER
$no_keywordc = $no_keywordc + $no_keyword; ## COUNT NO KEYWORDS TOGETHER
}
echo "";
echo " There are $urlcount sites in the Config File";
echo " There are $iic sites that Match Live Tabs";
echo " There are $ffc sites in the config file that don't match Live Tabs";
echo " There are $no_keywordc site(s) that don't have a Keyword";
## ***END*** CHECK CONFIG FILE, AGAINST OPEN TABS USING THE KEYWORD FROM A URL DIRECTORY LIST ***END*** ##
}
## ***END*** WEB BROWSER CHECKING SECTION AND WEBSITES OPEN ***END***##
if ($iic -lt $urlcount -or $iic -gt $urlcount -or $no_keywordc -gt 0 -or $browser_off -eq 1) { ## IF LIVE MATCHES IS LESS OR GREATER THAN CONFIG URL's, NO KEYWORD OR THE BROWSER WAS OFF - RESET THE DISPLAY
echo "";
echo "Refreshing screen as there was a website discrepancy, no keyword, the browser was closed or the device was recently powered on";
echo "";
$MATICS = select-string -pattern "xxx.my.leadermes.com" -InputObject $link_string; ## LOOK FOR MATICS URL FOR SYNTHEIC MOUSE CLICKS
if ($MATICS -ne $null) {
##$getr = ssh orangepi@"$ip" -X "xrandr -display :0.0;" | Out-String;
##$res_pos = $getr.IndexOf(","); ## LOOK FOR COMMA CHARECTER IN VARIABLE
##$getr = $getr.Substring($res_pos+2); ## CONTENTS AFTER COMMA CHARECTER
##$res_pos = $getr.IndexOf(","); ## LOOK FOR COMMA CHARECTER IN VARIABLE
##$getr = $getr.Substring(0, $res_pos); ## CONTENTS BEFORE COMMA CHARECTER
##$res_pos = $getr.IndexOf(" "); ## LOOK FOR CHARECTER RETRUN IN VARIABLE
##$getr = $getr.Substring($res_pos+1); ## CONTENTS AFTER CHARECTER RETRUN
##ssh orangepi@"$ip" -X "$exitchrome";
##ssh orangepi@"$ip" -X "$chrome";
if ($getr -eq "1920 x 1080") { ## THIS ALLOW US TO DO DIFFERENT SCREEN RESOLUTIONS IN THE FUTURE IF WE WANT TO
##Start-Sleep -s 25;
##ssh orangepi@"$ip" -X "DISPLAY=:0 xdotool key Return; exit;";
##Start-Sleep -s 20;
##ssh orangepi@"$ip" -X "DISPLAY=:0 xdotool key Tab Tab space mousemove 220 60 click 1; exit;";
##Start-Sleep -s 20;
##ssh orangepi@"$ip" -X "DISPLAY=:0 xdotool mousemove 1860 180 click 1 mousemove 1920 1080; exit;";
$getr=$null;
}
} else {
##ssh orangepi@"$ip" -X "$exitchrome";
##ssh orangepi@"$ip" -X "$chrome";
}
} else {
echo "";
echo "No refresh required";
echo "";
}
}
## END OF SCRIPT ##