File Systems

Some useful links to explain the concepts of File Systems

Concepts

• https://www.nixtutor.com/linux/understanding-the-linux-directory-layout/

• https://www.slashroot.in/understanding-file-system-superblock-linux

• https://unix.stackexchange.com/questions/4402/what-is-a-superblock-inode-dentry-and-a-file

• http://www.cyberciti.biz/faq/understanding-unix-linux-bsd-device-files/

• http://askubuntu.com/questions/397493/what-does-the-first-character-of-unix-mode-string-indicate

ext(2|3|4)

• http://www.thegeekstuff.com/2011/05/ext2-ext3-ext4/

• https://adarsh5388.wordpress.com/2013/11/29/difference-between-ext2-ext3-and-ext4-filesystem-in-linux/

• https://kerneltalks.com/disk-management/difference-between-ext2-ext3-and-ext4/amp/

• https://linoxide.com/how-tos/explained-in-detail-linux-ext2-ext3-and-ext4-filesystem/amp/

File Descriptors

• https://linuxmeerkat.wordpress.com/2011/12/02/file-descriptors-explained/amp/

• https://www.bottomupcs.com/file_descriptors.xhtml

• http://www.cyberciti.biz/tips/linux-procfs-file-descriptors.html

Proc File Systems

• http://www.slashroot.in/proc-file-system-linux-explained

• http://www.thegeekstuff.com/2010/11/linux-proc-file-system/

• https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/3/html/Reference_Guide/s1-proc-directories.html

ULimit

• https://easyengine.io/tutorials/linux/increase-open-files-limit/

• http://posidev.com/blog/2009/06/04/set-ulimit-parameters-on-ubuntu/

• http://www.cyberciti.biz/faq/linux-increase-the-maximum-number-of-open-files/

• http://askubuntu.com/questions/181215/too-many-open-files-how-to-find-the-culprit

Directory Structures

• http://askubuntu.com/questions/34880/use-of-opt-and-usr-local-directories-in-the-context-of-a-pc

• http://www.ghacks.net/2009/04/04/get-to-know-linux-the-etcinitd-directory/

• http://askubuntu.com/questions/19320/how-to-enable-or-disable-services

Inodes

• http://www.slashroot.in/inode-and-its-structure-linux

• https://tecadmin.net/what-is-inode-number-in-linux/

• http://www.grymoire.com/Unix/Inodes.html

• http://teaching.idallen.com/dat2330/04f/notes/links_and_inodes.html

Commands

S-Trace command

• https://blog.packagecloud.io/eng/2016/02/29/how-does-strace-work/

• http://linoxide.com/linux-command/linux-strace-command-examples/

• http://hokstad.com/5-simple-ways-to-troubleshoot-using-strace

• http://www.cyberciti.biz/tips/linux-strace-command-examples.html

• https://blog.packagecloud.io/eng/2015/11/15/strace-cheat-sheet/

• https://www.ibm.com/developerworks/aix/library/au-unix-strace.html