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/data/magisk_backup_bd5d0aa87b96353c78a3bf3a455121d0c767089c/boot.img.gz tar: Exiting with failure status due to previous errors

it extracts quite a few files before this hapens.

/data/magisk_backup_bd5d0aa87b96353c78a3bf3a455121d0c767089c/boot.img.gz
tar: Exiting with failure status due to previous errors

it extracts quite a few files before this hapens.

However, it is probably better to simply extract each of those files on their own without concatenating them, as in the comment by alecxs:

side note: concatenating win* files is wrong, that files are standalone tarball archives

• How can I export all my open Firefox Tabs to a text file? is posed about doing so on a living phone, but also points out where the file is located. The relevant file is called sessionstore.js.
  That does not seem useful for opera. grepping find for "session" only finds shared_prefs/sessionrestore.xml which contains nothing useful for my purposes.

• How can I export the list of open Chrome tabs?

• How can I export all my open Firefox Tabs to a text file? is posed about doing so on a living phone, but also points out where the file is located. The relevant file is called sessionstore.js.
  That does not seem useful for opera. grepping find for "session" only finds shared_prefs/sessionrestore.xml which contains nothing useful for my purposes.

• How can I export the list of open Chrome tabs?

data/data/com.opera.browser/files/appstate.bin contains at least some urls and their titles, separated by a null-byte. strings appstate.bin outputs more than just the urls that were open though. And some of those doubly or not completely.

data/data/com.opera.browser/files/appstate.bin contains at least some urls and their titles, separated by a null-byte. strings appstate.bin outputs more than just the urls that were open though. And some of those doubly or not completely. I shall document my journy with this file below.

Removing some obviously unwanted lines gives 523 lines, so ~260 urls:

 strings appstate.bin | grep -v -e 'operaui://startpage' -e 'Speed Dial' | grep -A2 reader_mode_state | uniq | grep -v 'reader_mode_state'

As a target number to consider:

strings appstate.bin | grep reader_mode_state | wc -l
231

That means - assuming this target number is a good estimate of how many tabs were open - that I have about thirty urls too many. I think I can live with that.