Part 1
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Files and File Systems
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1
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Linux Files and File Systems
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1.1
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Understanding File Types
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1.1.1
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Regular Files
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1.1.2
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Directories
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1.1.3
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Special Device Files
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1.1.4
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Regular Pipes
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1.1.5
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Named Pipes
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1.1.6
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Sockets
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1.1.7
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Hard Links
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1.1.8
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Soft Links
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1.2
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Determining the File Type
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1.2.1
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Regular Files and Directories
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1.2.2
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Device Special Files
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1.2.3
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Named Pipes
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1.2.4
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Hard and Soft Links
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1.3
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Creating Files
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1.4
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Understanding File Systems
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1.4.1
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The ext2 File System
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1.4.2
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How the ext2 File System Works
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1.5
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Exploring the File System Hierarchy
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1.5.1
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Mount Points
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1.5.2
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The /proc File System
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2
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SuSE and the File System Hierarchy Standard (FHS)
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2.1
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The Root Directory
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2.1.1
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/bin: Essential command binaries
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2.1.2
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/boot: Static files of the boot loader and the Linux kernel
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2.1.3
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/cdrom: Mount point of CD-ROMs
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2.1.4
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/dev: Device special files
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2.1.5
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/etc: Host Specific Configuration Files
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2.1.6
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/home: User home directories
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2.1.7
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/lib: Essential shared libraries and kernel modules
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2.1.8
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/mnt: Mount point of temporary partitions
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2.1.9
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/opt: Add-on application software packages
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2.1.10
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/root: Home directory for the root user
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2.1.11
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/sbin: Essential system binaries
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2.1.12
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/tmp: Temporary files
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2.2
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/usr: Secondary hierarchy
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2.2.1
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/usr/X11R6: X Window System, version 11, release 6
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2.2.2
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/usr/bin: Most user commands
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2.2.3
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/usr/include: Directory for standard include files
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2.2.4
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/usr/lib: Libraries for programming and packages
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2.2.5
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/usr/local: Local hierarchy
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2.2.6
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/usr/sbin: Non-essential standard system binaries
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2.2.7
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/usr/share: Architecture-independent data
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2.2.8
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/usr/share/man: Manual pages
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2.2.9
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/usr/src: Source code
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2.3
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/var: Variable data
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2.3.1
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/var/cache: Application cache data
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2.3.2
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/var/lock: Lock files
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2.3.3
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/var/log: Log files and directories
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2.3.4
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/var/spool/mail: User mailbox files
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2.3.5
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/var/run: Run-time variable files
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2.3.6
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/var/spool: Application spool data
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2.3.7
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/var/tmp: Temporary files preserved between system reboots
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3
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Collecting System Information
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3.1
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Process-Specific Subdirectories
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3.2
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Kernel data
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3.3
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IDE devices in /proc/ide
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3.4
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Networking info in /proc/net
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3.5
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SCSI info
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3.6
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Parallel port info in /proc/parport
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3.7
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TTY info in /proc/tty
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4
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Modifying System Parameters
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4.1
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/proc/sys/fs - File system data
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4.1.1
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dentry-state
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4.1.2
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dquot-nr and dquot-max
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4.1.3
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file-nr and file-max
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4.1.4
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inode-state, inode-nr and inode-max
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4.2
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/proc/sys/fs/binfmt_misc - Miscellaneous binary formats
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4.2.1
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Registering a new binary format
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4.2.2
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Check or reset the status of the binary format handler
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4.2.3
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Status of a single handler
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4.2.4
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Example usage of binfmt_misc (emulate binfmt_java)
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4.3
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/proc/sys/kernel - general kernel parameters
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4.3.1
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acct
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4.3.2
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ctrl-alt-del
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4.3.3
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domainname and hostname
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4.3.4
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osrelease, ostype and version
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4.3.5
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panic
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4.3.6
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printk
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4.3.7
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sg-big-buff
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4.3.8
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modprobe
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4.4
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/proc/sys/vm - The virtual memory subsystem
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4.4.1
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bdflush
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4.4.2
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buffermem
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4.4.3
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freepages
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4.4.4
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kswapd
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4.4.5
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overcommit_memory
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4.4.6
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pagecache
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4.4.7
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pagetable_cache
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4.4.8
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swapctl
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4.5
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/proc/sys/dev - Device specific parameters
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4.6
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/proc/sys/sunrpc - Remote procedure calls
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4.7
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/proc/sys/net - Networking stuff
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4.7.1
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/proc/sys/net/core - Network core options
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4.7.2
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/proc/sys/net/unix - Parameters for Unix domain sockets
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4.8
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/proc/sys/net/ipv4 - IPV4 settings
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4.8.1
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ICMP settings
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4.8.2
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IP settings
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4.8.3
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IP fragmentation settings
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4.8.4
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TCP settings
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4.8.5
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Interface specific settings
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4.8.6
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Routing settings
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4.8.7
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Network Neighbor handling
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4.9
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Appletalk
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4.9.1
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aarp-expiry-time
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4.9.2
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aarp-resolve-time
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4.9.3
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aarp-retransmit-limit
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4.9.4
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aarp-tick-time
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4.10
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IPX
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