file_descriptor.os.txt

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   FILE_DESCRIPTOR  
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FILE DESCRIPTOR ==>               #ID representing an open file

MAX COUNT ==>                     #Def 1024
                                  #Can be increased:
                                  #  - /etc/sysctl.conf: add line
                                  #      fs.file-max = 500000 (def: 20000)
                                  #  - /etc/security/limits.conf: add lines
                                  #      * soft nofile 60000
                                  #      * hard nofile 60000
                                  #  - apply changes by rebooting

lsof                              #List file descriptors
                                  #Can be used to check for leaks