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Firefox - reading out urls of opened tabs from the command-line

Reading from STDIN and using data immediatly (while still reading) or opening a URL with zbarCommand-line file reader (like “less”) that can tell the line where the user stopped readingRemoving blank spaces and tabs from line without messing with line endingsWhere does firefox get the “default” applications for opening files from?opening multiple tabs in firefox using a one-liner bash scriptmkfifo pipes, file descriptors and ImageMagick (convert)Output URL of open tabs in python 3.6.1 (windows)Firefox '3 bar' menu not openingDecompress firefox 57+ opened tabs file on Linux from the command line : Error 44 : Unrecognized header : file cannot be decoded

.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty{ margin-bottom:0;
}

6

1

I sometimes have quite a big range of tabs open in Firefox and I prefer it to save them to a file, rather then using the build-in bookmarks.

Therefore I (manually) copy the urls from the about:preferences page, save them to a file and process the file with: tr '|' 'n' in a little bash script.

Later when I want to reopen the tabs from the textfile I run this little loop:

#!/bin/bash



# usage: $bash Open-tabs.sh file-with-bookmarks.txt



 while read -r line; do

     firefox -new-tab "$line" 2>/dev/null &

     sleep 2

 done < "$1"

and it opens all tabs with a delay of 2 seconds.

I would like to know if there is a way, I can read-out the urls of the opened tabs from the command line, so I could include it to my script?

bash command-line firefox url

share|improve this question

asked Aug 9 '17 at 17:51

nathnath

1,078832

add a comment | 

6

1

I sometimes have quite a big range of tabs open in Firefox and I prefer it to save them to a file, rather then using the build-in bookmarks.

Therefore I (manually) copy the urls from the about:preferences page, save them to a file and process the file with: tr '|' 'n' in a little bash script.

Later when I want to reopen the tabs from the textfile I run this little loop:

#!/bin/bash



# usage: $bash Open-tabs.sh file-with-bookmarks.txt



 while read -r line; do

     firefox -new-tab "$line" 2>/dev/null &

     sleep 2

 done < "$1"

and it opens all tabs with a delay of 2 seconds.

I would like to know if there is a way, I can read-out the urls of the opened tabs from the command line, so I could include it to my script?

bash command-line firefox url

share|improve this question

asked Aug 9 '17 at 17:51

nathnath

1,078832

add a comment | 

I sometimes have quite a big range of tabs open in Firefox and I prefer it to save them to a file, rather then using the build-in bookmarks.

Therefore I (manually) copy the urls from the about:preferences page, save them to a file and process the file with: tr '|' 'n' in a little bash script.

Later when I want to reopen the tabs from the textfile I run this little loop:

#!/bin/bash



# usage: $bash Open-tabs.sh file-with-bookmarks.txt



 while read -r line; do

     firefox -new-tab "$line" 2>/dev/null &

     sleep 2

 done < "$1"

and it opens all tabs with a delay of 2 seconds.

I would like to know if there is a way, I can read-out the urls of the opened tabs from the command line, so I could include it to my script?

bash command-line firefox url

share|improve this question

asked Aug 9 '17 at 17:51

nathnath

1,078832

#!/bin/bash



# usage: $bash Open-tabs.sh file-with-bookmarks.txt



 while read -r line; do

     firefox -new-tab "$line" 2>/dev/null &

     sleep 2

 done < "$1"

share|improve this question

asked Aug 9 '17 at 17:51

nathnath

1,078832

share|improve this question

asked Aug 9 '17 at 17:51

nathnath

1,078832

asked Aug 9 '17 at 17:51

nathnath

1,078832

asked Aug 9 '17 at 17:51

nathnath

1,078832

2 Answers
2

active

oldest

votes

4

Source(Changed file path) : Get all the open tabs

This snippet gets the current firefox tab url's. It uses the
recovery.js file in your profile folder. That file is updated
almost instantly, however it will not always be the correct url.

Get all the open tabs:

python2 <<< $'import jsonnf = open("/home/<username>/.mozilla/firefox/<name of the random stringed folder>.default/sessionstore-backups/recovery.js", "r")njdata = json.loads(f.read())nf.close()nfor win in jdata.get("windows"):ntfor tab in win.get("tabs"):ntti = tab.get("index") - 1nttprint tab.get("entries")[i].get("url")'

share|improve this answer

edited Aug 10 '17 at 20:20

answered Aug 9 '17 at 18:04

Hunter.S.ThompsonHunter.S.Thompson

5,85151436

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  is it possible, the path on debian is ~/.mozilla/firefox/*.default/sessionstore-backups/recovery.js?
  
  – nath
  Aug 9 '17 at 18:48
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Yes sorry I edited the question with that but I forgot the sessionrestore-backups before recovery.js. Thank you for pointing it out. Edited Answer
  
  – Hunter.S.Thompson
  Aug 9 '17 at 18:49
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I always get Traceback (most recent call last): File "<stdin>", line 2, in <module> IOError: [Errno 2] No such file or directory: '~/.mozilla/firefox/*.default/sessionstore-backups/recovery.js' with cat I can read the file...
  
  – nath
  Aug 9 '17 at 19:15
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I edited the answer. copy and paste it, but instead of <username> add your username.
  
  – Hunter.S.Thompson
  Aug 9 '17 at 19:17
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Python probably does not understand the ~/ syntax being /home/<username>.
  
  – Hunter.S.Thompson
  Aug 9 '17 at 19:19
  
  
  

  
  
  
  

 | 
show 3 more comments

4

this works for Firefox 57+. You'll need lz4 (via pip). The file header is gathered from the length of b'mozLz40'. Use an environment variable for the filepath if you want to use it in a oneliner, replace with n and t accordingly and merge lines.

export opentabs=$(find ~/.mozilla/firefox*/*.default/sessionstore-backups/recovery.jsonlz4);



python3 <<< $'import os, json, lz4.block

f = open(os.environ["opentabs"], "rb")

magic = f.read(8)

jdata = json.loads(lz4.block.decompress(f.read()).decode("utf-8"))

f.close()

for win in jdata.get("windows"):

    for tab in win.get("tabs"):

        i = int(tab.get("index")) - 1

        urls = tab.get("entries")[i].get("url")

        print(urls)'

share|improve this answer

edited 1 hour ago

answered Aug 30 '17 at 21:04

wbobwbob

662

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  To get the latest needed file from firefox : export opentabs=$(ls -t ~/.mozilla/firefox*/*/sessionstore-backups/recovery.jsonlz4 | sed q)
  
  – Gilles Quenot
  Jan 4 '18 at 0:26
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Can you explain magic = f.read(8) ? You don't use magic var later.
  
  – Gilles Quenot
  Jan 4 '18 at 12:19
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  the first 8 bytes in recovery.jsonlz4 are part of mozillas custom file format - passing the length of the magic to read(8) causes the next read() within json.loads to continue after the header, making it a valid decompressable lz4 stream. For the reasoning to choose a custom file header, you can find more details in this github gist linking to the relevant firefox source.
  
  – wbob
  Jan 6 '18 at 11:11
  
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @wbob Now I get UnicodeDecodeError: 'utf-8' codec can't decode byte 0xf2 in position 12: invalid continuation byte, can you help ?
  
  – SebMa
  Jun 14 '18 at 17:22
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @Sebma I updated to lz4 2.0.0 and got the error too, your edit fixed it, thank you. I went ahead and merged the module imports
  
  – wbob
  Jun 20 '18 at 19:25
  

  
  
  
  

 | 
show 8 more comments

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4

Source(Changed file path) : Get all the open tabs

This snippet gets the current firefox tab url's. It uses the
recovery.js file in your profile folder. That file is updated
almost instantly, however it will not always be the correct url.

Get all the open tabs:

python2 <<< $'import jsonnf = open("/home/<username>/.mozilla/firefox/<name of the random stringed folder>.default/sessionstore-backups/recovery.js", "r")njdata = json.loads(f.read())nf.close()nfor win in jdata.get("windows"):ntfor tab in win.get("tabs"):ntti = tab.get("index") - 1nttprint tab.get("entries")[i].get("url")'

share|improve this answer

edited Aug 10 '17 at 20:20

answered Aug 9 '17 at 18:04

Hunter.S.ThompsonHunter.S.Thompson

5,85151436

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  is it possible, the path on debian is ~/.mozilla/firefox/*.default/sessionstore-backups/recovery.js?
  
  – nath
  Aug 9 '17 at 18:48
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Yes sorry I edited the question with that but I forgot the sessionrestore-backups before recovery.js. Thank you for pointing it out. Edited Answer
  
  – Hunter.S.Thompson
  Aug 9 '17 at 18:49
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I always get Traceback (most recent call last): File "<stdin>", line 2, in <module> IOError: [Errno 2] No such file or directory: '~/.mozilla/firefox/*.default/sessionstore-backups/recovery.js' with cat I can read the file...
  
  – nath
  Aug 9 '17 at 19:15
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I edited the answer. copy and paste it, but instead of <username> add your username.
  
  – Hunter.S.Thompson
  Aug 9 '17 at 19:17
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Python probably does not understand the ~/ syntax being /home/<username>.
  
  – Hunter.S.Thompson
  Aug 9 '17 at 19:19
  
  
  

  
  
  
  

 | 
show 3 more comments

4

Source(Changed file path) : Get all the open tabs

This snippet gets the current firefox tab url's. It uses the
recovery.js file in your profile folder. That file is updated
almost instantly, however it will not always be the correct url.

Get all the open tabs:

python2 <<< $'import jsonnf = open("/home/<username>/.mozilla/firefox/<name of the random stringed folder>.default/sessionstore-backups/recovery.js", "r")njdata = json.loads(f.read())nf.close()nfor win in jdata.get("windows"):ntfor tab in win.get("tabs"):ntti = tab.get("index") - 1nttprint tab.get("entries")[i].get("url")'

share|improve this answer

edited Aug 10 '17 at 20:20

answered Aug 9 '17 at 18:04

Hunter.S.ThompsonHunter.S.Thompson

5,85151436

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  is it possible, the path on debian is ~/.mozilla/firefox/*.default/sessionstore-backups/recovery.js?
  
  – nath
  Aug 9 '17 at 18:48
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Yes sorry I edited the question with that but I forgot the sessionrestore-backups before recovery.js. Thank you for pointing it out. Edited Answer
  
  – Hunter.S.Thompson
  Aug 9 '17 at 18:49
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I always get Traceback (most recent call last): File "<stdin>", line 2, in <module> IOError: [Errno 2] No such file or directory: '~/.mozilla/firefox/*.default/sessionstore-backups/recovery.js' with cat I can read the file...
  
  – nath
  Aug 9 '17 at 19:15
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I edited the answer. copy and paste it, but instead of <username> add your username.
  
  – Hunter.S.Thompson
  Aug 9 '17 at 19:17
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Python probably does not understand the ~/ syntax being /home/<username>.
  
  – Hunter.S.Thompson
  Aug 9 '17 at 19:19
  
  
  

  
  
  
  

 | 
show 3 more comments

Source(Changed file path) : Get all the open tabs

This snippet gets the current firefox tab url's. It uses the
recovery.js file in your profile folder. That file is updated
almost instantly, however it will not always be the correct url.

Get all the open tabs:

python2 <<< $'import jsonnf = open("/home/<username>/.mozilla/firefox/<name of the random stringed folder>.default/sessionstore-backups/recovery.js", "r")njdata = json.loads(f.read())nf.close()nfor win in jdata.get("windows"):ntfor tab in win.get("tabs"):ntti = tab.get("index") - 1nttprint tab.get("entries")[i].get("url")'

share|improve this answer

edited Aug 10 '17 at 20:20

answered Aug 9 '17 at 18:04

Hunter.S.ThompsonHunter.S.Thompson

5,85151436

python2 <<< $'import jsonnf = open("/home/<username>/.mozilla/firefox/<name of the random stringed folder>.default/sessionstore-backups/recovery.js", "r")njdata = json.loads(f.read())nf.close()nfor win in jdata.get("windows"):ntfor tab in win.get("tabs"):ntti = tab.get("index") - 1nttprint tab.get("entries")[i].get("url")'

share|improve this answer

edited Aug 10 '17 at 20:20

answered Aug 9 '17 at 18:04

Hunter.S.ThompsonHunter.S.Thompson

5,85151436

answered Aug 9 '17 at 18:04

Hunter.S.ThompsonHunter.S.Thompson

5,85151436

answered Aug 9 '17 at 18:04

Hunter.S.ThompsonHunter.S.Thompson

5,85151436

4

this works for Firefox 57+. You'll need lz4 (via pip). The file header is gathered from the length of b'mozLz40'. Use an environment variable for the filepath if you want to use it in a oneliner, replace with n and t accordingly and merge lines.

export opentabs=$(find ~/.mozilla/firefox*/*.default/sessionstore-backups/recovery.jsonlz4);



python3 <<< $'import os, json, lz4.block

f = open(os.environ["opentabs"], "rb")

magic = f.read(8)

jdata = json.loads(lz4.block.decompress(f.read()).decode("utf-8"))

f.close()

for win in jdata.get("windows"):

    for tab in win.get("tabs"):

        i = int(tab.get("index")) - 1

        urls = tab.get("entries")[i].get("url")

        print(urls)'

share|improve this answer

edited 1 hour ago

answered Aug 30 '17 at 21:04

wbobwbob

662

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  To get the latest needed file from firefox : export opentabs=$(ls -t ~/.mozilla/firefox*/*/sessionstore-backups/recovery.jsonlz4 | sed q)
  
  – Gilles Quenot
  Jan 4 '18 at 0:26
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Can you explain magic = f.read(8) ? You don't use magic var later.
  
  – Gilles Quenot
  Jan 4 '18 at 12:19
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  the first 8 bytes in recovery.jsonlz4 are part of mozillas custom file format - passing the length of the magic to read(8) causes the next read() within json.loads to continue after the header, making it a valid decompressable lz4 stream. For the reasoning to choose a custom file header, you can find more details in this github gist linking to the relevant firefox source.
  
  – wbob
  Jan 6 '18 at 11:11
  
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @wbob Now I get UnicodeDecodeError: 'utf-8' codec can't decode byte 0xf2 in position 12: invalid continuation byte, can you help ?
  
  – SebMa
  Jun 14 '18 at 17:22
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @Sebma I updated to lz4 2.0.0 and got the error too, your edit fixed it, thank you. I went ahead and merged the module imports
  
  – wbob
  Jun 20 '18 at 19:25
  

  
  
  
  

 | 
show 8 more comments

4

this works for Firefox 57+. You'll need lz4 (via pip). The file header is gathered from the length of b'mozLz40'. Use an environment variable for the filepath if you want to use it in a oneliner, replace with n and t accordingly and merge lines.

export opentabs=$(find ~/.mozilla/firefox*/*.default/sessionstore-backups/recovery.jsonlz4);



python3 <<< $'import os, json, lz4.block

f = open(os.environ["opentabs"], "rb")

magic = f.read(8)

jdata = json.loads(lz4.block.decompress(f.read()).decode("utf-8"))

f.close()

for win in jdata.get("windows"):

    for tab in win.get("tabs"):

        i = int(tab.get("index")) - 1

        urls = tab.get("entries")[i].get("url")

        print(urls)'

share|improve this answer

edited 1 hour ago

answered Aug 30 '17 at 21:04

wbobwbob

662

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  To get the latest needed file from firefox : export opentabs=$(ls -t ~/.mozilla/firefox*/*/sessionstore-backups/recovery.jsonlz4 | sed q)
  
  – Gilles Quenot
  Jan 4 '18 at 0:26
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Can you explain magic = f.read(8) ? You don't use magic var later.
  
  – Gilles Quenot
  Jan 4 '18 at 12:19
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  the first 8 bytes in recovery.jsonlz4 are part of mozillas custom file format - passing the length of the magic to read(8) causes the next read() within json.loads to continue after the header, making it a valid decompressable lz4 stream. For the reasoning to choose a custom file header, you can find more details in this github gist linking to the relevant firefox source.
  
  – wbob
  Jan 6 '18 at 11:11
  
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @wbob Now I get UnicodeDecodeError: 'utf-8' codec can't decode byte 0xf2 in position 12: invalid continuation byte, can you help ?
  
  – SebMa
  Jun 14 '18 at 17:22
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @Sebma I updated to lz4 2.0.0 and got the error too, your edit fixed it, thank you. I went ahead and merged the module imports
  
  – wbob
  Jun 20 '18 at 19:25
  

  
  
  
  

 | 
show 8 more comments

this works for Firefox 57+. You'll need lz4 (via pip). The file header is gathered from the length of b'mozLz40'. Use an environment variable for the filepath if you want to use it in a oneliner, replace with n and t accordingly and merge lines.

export opentabs=$(find ~/.mozilla/firefox*/*.default/sessionstore-backups/recovery.jsonlz4);



python3 <<< $'import os, json, lz4.block

f = open(os.environ["opentabs"], "rb")

magic = f.read(8)

jdata = json.loads(lz4.block.decompress(f.read()).decode("utf-8"))

f.close()

for win in jdata.get("windows"):

    for tab in win.get("tabs"):

        i = int(tab.get("index")) - 1

        urls = tab.get("entries")[i].get("url")

        print(urls)'

share|improve this answer

edited 1 hour ago

answered Aug 30 '17 at 21:04

wbobwbob

662

export opentabs=$(find ~/.mozilla/firefox*/*.default/sessionstore-backups/recovery.jsonlz4);



python3 <<< $'import os, json, lz4.block

f = open(os.environ["opentabs"], "rb")

magic = f.read(8)

jdata = json.loads(lz4.block.decompress(f.read()).decode("utf-8"))

f.close()

for win in jdata.get("windows"):

    for tab in win.get("tabs"):

        i = int(tab.get("index")) - 1

        urls = tab.get("entries")[i].get("url")

        print(urls)'

share|improve this answer

edited 1 hour ago

answered Aug 30 '17 at 21:04

wbobwbob

662

answered Aug 30 '17 at 21:04

wbobwbob

662

answered Aug 30 '17 at 21:04

wbobwbob

662