Search notes:

/proc/$pid/fd/

My process

$ ls -l /proc/$$/fd
total 0
lrwx------ 1 rene rene 64 Nov 14 07:33 0 -> /dev/pts/0
lrwx------ 1 rene rene 64 Nov 14 07:33 1 -> /dev/pts/0
lrwx------ 1 rene rene 64 Nov 14 07:33 2 -> /dev/pts/0
lrwx------ 1 rene rene 64 Nov 14 07:33 255 -> /dev/pts/0

Another process

Another process (I believe an SQLite shell): 
$ ls -l /proc/164495/fd
total 0
lrwx------ 1 rene rene 64 Jun 10 06:06 0 -> /dev/pts/4
l-wx------ 1 rene rene 64 Jun 10 06:06 1 -> 'pipe:[2100913]'
lrwx------ 1 rene rene 64 Jun 10 06:06 2 -> /dev/pts/4
lrwx------ 1 rene rene 64 Jun 10 06:06 3 -> /home/rene/helloWorld.db
lrwx------ 1 rene rene 64 Jun 10 06:06 4 -> '/var/tmp/etilqs_b6690f68aa03e47f (deleted)'

See also

/proc/$pid

Index

Fatal error: Uncaught PDOException: SQLSTATE[HY000]: General error: 8 attempt to write a readonly database in /home/httpd/vhosts/renenyffenegger.ch/php/web-request-database.php:78 Stack trace: #0 /home/httpd/vhosts/renenyffenegger.ch/php/web-request-database.php(78): PDOStatement->execute(Array) #1 /home/httpd/vhosts/renenyffenegger.ch/php/web-request-database.php(30): insert_webrequest_('/notes/Linux/fh...', 1788383302, '216.73.217.21', 'Mozilla/5.0 App...', NULL) #2 /home/httpd/vhosts/renenyffenegger.ch/httpsdocs/notes/Linux/fhs/proc/pid/fd(55): insert_webrequest() #3 {main} thrown in /home/httpd/vhosts/renenyffenegger.ch/php/web-request-database.php on line 78