Move pages back into a "pages" folder

pages/linux/apt-get.md

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+# apt-get
+
+> Debian and Ubuntu package management utility
+
+- Synchronize list of packages and versions available. This should be run first, before running subsequent apt-get commands.
+ 
+`apt-get update`
+
+- install a new package
+
+`apt-get install {{package}}`
+
+
+- remove a package
+ 
+`apt-get remove {{package}}`
+
+- Upgrade installed packages to newest available versions
+
+`apt-get upgrade`
+
+- Upgrade installed packages (like `apt-get upgrade`) including removing obsolete packages and installing additional packages to meet new package dependencies. 
+
+`apt-get dist-upgrade`

pages/linux/du.md

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+# du
+
+> Estimate file space usage
+
+- get a sum of the total size of a file/folder in human readable units
+
+`du -sh {{file/directory}}`
+
+- list file sizes of a directory and any subdirectories in KB
+
+`du -k {{file/directory}}`
+
+- get recursively, individual file/folder sizes in human readable form
+
+`du -ah {{directory}}`
+
+- list the KB sizes of directories for N levels below the specified directory 
+
+`du --max-depth=1`

pages/linux/emerge.md

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+# emerge
+
+> Gentoo Linux package manager utility
+
+- synchronize all packages
+
+`emerge --sync`
+
+- update all packages, including dependencies
+
+`emerge -uDNav @world`
+
+- resume a failed updated, skipping the failing package
+
+`emerge --resume --skipfirst`
+
+- install a new package, with confirmation
+
+`emerge -av {{package-name}}`
+
+- remove a package, with confirmation
+
+`emerge -Cav {{package-name}}`
+
+- remove orphaned packages (that were installed only as dependencies)
+
+`emerge -avc`
+
+- search the package database for a keyword
+
+`emerge -S {{keyword}}`

pages/linux/findmnt.md

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+# findmnt
+
+> Find your filesystem
+
+- List all mounted filesystems
+
+`findmnt`
+
+- Search for a device
+
+`findmnt {{/dev/sdb1}}`
+
+- Search for a mountpoint
+
+`findmnt {{/}}`
+
+- Find filesystems in specific type
+
+`findmnt -t {{ext4}}`
+
+- Find filesystems with specific label
+
+`findmnt LABEL={{BigStorage}}`

pages/linux/ip.md

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+# ip
+
+> Show / manipulate routing, devices, policy routing and tunnels
+
+- List interfaces with detailed info
+
+`ip a`
+
+- Display the routing table
+
+`ip r`
+
+- Make an interface up/down 
+
+`ip link set {{interface}} up/down`
+
+- Add/Delete an ip address to an interface
+
+`ip addr add/del {{ip}}/{{mask}} dev {{interface}}`
+
+- Add an default route
+
+`ip route add default via {{ip}} dev {{interface}}`

pages/linux/journalctl.md

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+# journalctl
+
+> Query the systemd journal
+
+- Show all messages from this boot
+
+`journalctl -b`
+
+- Show all messages from last boot
+
+`journalctl -b -1`
+
+- Follow new messages (like `tail -f` for traditional syslog)
+
+`journalctl -f`
+
+- Show all messages by a specific unit
+
+`journalctl -u {{unit}}`
+
+- Show all messages by a specific process
+
+`journalctl _PID={{pid}}`
+
+- Show all messages by a specific executable
+
+`journalctl {{/path/to/executable}}`

pages/linux/md5sum.md

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+# md5sum
+
+> Calculate MD5 cryptographic checksums
+
+- Calculate the MD5 checksum for file(s) or files in a directory, one checksum per file
+
+`md5sum {{filename1}}`
+`md5sum {{filename1}} {{filename2}}`
+`md5sum {{directory/\*}}`
+
+- Read a file of MD5SUMs and verify all files have matching checksums
+
+`md5sum -c {{filename.md5}}`

pages/linux/pacman.md

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+# pacman
+
+> Arch Linux package manager utility
+
+- synchronize and update all packages
+ 
+`pacman -Syyu`
+
+- install a new package
+
+`pacman -S package-name`
+
+- remove a package and its dependencies
+ 
+`pacman -Rs package-name`
+
+- search the package database for a keyword
+
+`pacman -Ss icon theme`
+
+- list installed packages and versions
+
+`pacman -Q`

pages/linux/shutdown.md

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+# shutdown
+
+> Shutdown and reboot the system
+
+- Power off (halt) immediately
+
+`shutdown -h now`
+
+- Reboot immediately
+
+`shutdown -r now`
+
+- Reboot in 5 minutes
+
+`shutdown -r +{{5}} &`
+
+- Cancel a pending shutdown/reboot operation
+
+`shutdown -c`

pages/linux/ss.md

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+# ss
+
+> Utility to investigate sockets
+
+- Dump all TCP/UDP/RAW/UNIX sockets
+
+`ss -a {{-t/-u/-w/-x}}`
+
+- Show process(es) that using socket
+
+`ss -p`
+
+- Filter TCP sockets by states, only/exclude
+
+`ss {{state/exclude}} {{bucket/big/connected/synchronized/...}}`
+
+- Filter sockets by address and/or port
+
+`ss -t dst 1.2.3.4:80`
+`ss -u src 127/8`
+`ss -t 'dport >= :1024'`
+`ss -x "src /tmp/.X11-unix/*"`
+`ss -t state established '( dport = :ssh or sport = :ssh )'`
+
+- Only list IPv4 or IPv6 sockets
+
+`ss {{-4/-6}}`

pages/linux/systemctl.md

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+# systemctl
+
+> Control the systemd system and service manager
+
+- List failed units
+
+`systemctl --failed`
+
+- Start/Stop/Restart a service
+
+`systemctl start/stop/restart {{unit}}`
+
+- Show the status of a unit
+
+`systemctl status {{unit}}`
+
+- Enable/Disable a unit to be started on bootup
+
+`systemctl enable/disable {{unit}}`
+
+- Reload systemd, scanning for new or changed units
+
+`systemctl daemon-reload`