doc: Fixed a few typos on Building Doc's, Changed Tab's to spaces and limited line length to < 80 chars where possible

Signed-off-by: Martin Winter <mwinter@opensourcerouting.org>

1 files changed, 116 insertions, 109 deletions

diff --git a/doc/Building_FRR_on_CentOS6.md b/doc/Building_FRR_on_CentOS6.md
index f770aebcf..ccb07fb2a 100644
--- a/doc/Building_FRR_on_CentOS6.md
+++ b/doc/Building_FRR_on_CentOS6.md
@@ -6,148 +6,155 @@ Instructions are tested with `CentOS 6.8` on `x86_64` platform
 CentOS 6 restrictions:
 ----------------------
 
-- PIMd is not supported on `CentOS 6`. Upgrade to `CentOS 7` if PIMd is needed
-- MPLS is not supported on `CentOS 6`. MPLS requires Linux Kernel 4.5 or higher
-  (LDP can be built, but may have limited use without MPLS)
+- PIMd is not supported on `CentOS 6`. Upgrade to `CentOS 7` if PIMd is 
+  needed
+- MPLS is not supported on `CentOS 6`. MPLS requires Linux Kernel 4.5 or 
+  higher (LDP can be built, but may have limited use without MPLS)
 
 Install required packages
 -------------------------
-		
+
 Add packages:
 
-	sudo yum install git autoconf automake libtool make gawk readline-devel \
-	  texinfo net-snmp-devel groff pkgconfig json-c-devel pam-devel \
-	  flex pytest
+    sudo yum install git autoconf automake libtool make gawk readline-devel \
+      texinfo net-snmp-devel groff pkgconfig json-c-devel pam-devel \
+      flex pytest
 
-Install newer version of bison (CentOS 6 package source is too old)	from CentOS 7
+Install newer version of bison (CentOS 6 package source is too old) from 
+CentOS 7
 
-	curl -O http://vault.centos.org/7.0.1406/os/Source/SPackages/bison-2.7-4.el7.src.rpm
-	rpmbuild --rebuild ./bison-2.7-4.el7.src.rpm
-	sudo yum install ./rpmbuild/RPMS/x86_64/bison-2.7-4.el6.x86_64.rpm
-	rm -rf rpmbuild
+    curl -O http://vault.centos.org/7.0.1406/os/Source/SPackages/bison-2.7-4.el7.src.rpm
+    rpmbuild --rebuild ./bison-2.7-4.el7.src.rpm
+    sudo yum install ./rpmbuild/RPMS/x86_64/bison-2.7-4.el6.x86_64.rpm
+    rm -rf rpmbuild
 
 Install newer version of autoconf and automake (Package versions are too old)
 
-	curl -O http://ftp.gnu.org/gnu/autoconf/autoconf-2.69.tar.gz
-	tar xvf autoconf-2.69.tar.gz
-	cd autoconf-2.69
-	./configure --prefix=/usr
-	make
-	sudo make install
-	cd ..
-	
-	curl -O http://ftp.gnu.org/gnu/automake/automake-1.15.tar.gz
-	tar xvf automake-1.15.tar.gz
-	cd automake-1.15
-	./configure --prefix=/usr
-	make
-	sudo make install
-	cd ..
-
-Install `Python 2.7` in parallel to default 2.6 (needed for `make check` to run unittests). 
+    curl -O http://ftp.gnu.org/gnu/autoconf/autoconf-2.69.tar.gz
+    tar xvf autoconf-2.69.tar.gz
+    cd autoconf-2.69
+    ./configure --prefix=/usr
+    make
+    sudo make install
+    cd ..
+    
+    curl -O http://ftp.gnu.org/gnu/automake/automake-1.15.tar.gz
+    tar xvf automake-1.15.tar.gz
+    cd automake-1.15
+    ./configure --prefix=/usr
+    make
+    sudo make install
+    cd ..
+
+Install `Python 2.7` in parallel to default 2.6 (needed for `make check` to 
+run unittests). 
 Pick correct EPEL based on CentOS version used. Then install current `pytest`
 
-	rpm -ivh http://dl.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm
-	rpm -ivh https://centos6.iuscommunity.org/ius-release.rpm
-	yum install python27 python27-pip
-	pip2.7 install pytest
+    rpm -ivh http://dl.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm
+    rpm -ivh https://centos6.iuscommunity.org/ius-release.rpm
+    yum install python27 python27-pip
+    pip2.7 install pytest
 
-Please note that `CentOS 6` needs to keep python pointing to version 2.6 for `yum` to keep
-working, so don't create a symlink for python2.7 to python
-	
+Please note that `CentOS 6` needs to keep python pointing to version 2.6 
+for `yum` to keep working, so don't create a symlink for python2.7 to python
+    
 Get FRR, compile it and install it (from Git)
 ---------------------------------------------
 
-**This assumes you want to build and install FRR from source and not using any packages**
+**This assumes you want to build and install FRR from source and not using 
+any packages**
 
 ### Add frr groups and user
 
-	sudo groupadd -g 92 frr
-	sudo groupadd -r -g 85 frrvt
-	sudo useradd -u 92 -g 92 -M -r -G frrvt -s /sbin/nologin \
-	  -c "FRR FreeRangeRouting suite" -d /var/run/frr frr
+    sudo groupadd -g 92 frr
+    sudo groupadd -r -g 85 frrvt
+    sudo useradd -u 92 -g 92 -M -r -G frrvt -s /sbin/nologin \
+      -c "FRR FreeRangeRouting suite" -d /var/run/frr frr
 
 ### Download Source, configure and compile it
-(You may prefer different options on configure statement. These are just an example.)
-
-You may want to pay special attention to `/usr/lib64` paths and change them if you are not building on a x86_64 architecture
-
-	git clone https://github.com/freerangerouting/frr.git frr
-	cd frr
-	git checkout stable/2.0
-	./bootstrap.sh
-	./configure \
-    	--sysconfdir=/etc/frr \
-    	--libdir=/usr/lib64/frr \
-		--libexecdir=/usr/lib64/frr \
-		--localstatedir=/var/run/frr \
-		--disable-pimd \
-		--enable-snmp=agentx \
-		--enable-multipath=64 \
-		--enable-ospfclient=yes \
-		--enable-ospfapi=yes \
-	    --enable-user=frr \
-	    --enable-group=frr \
-	    --enable-vty-group=frrvt \
-	    --enable-rtadv \
-	    --disable-exampledir \
-    	--enable-watchfrr \
-    	--enable-tcp-zebra \
-    	--enable-fpm \
-	    --with-pkg-git-version \
-	    --with-pkg-extra-version=-MyOwnFRRVersion	
-	make
-	make check PYTHON=/usr/bin/python2.7
-	sudo make install
+(You may prefer different options on configure statement. These are just 
+an example.)
+
+You may want to pay special attention to `/usr/lib64` paths and change 
+them if you are not building on a x86_64 architecture
+
+    git clone https://github.com/freerangerouting/frr.git frr
+    cd frr
+    git checkout stable/2.0
+    ./bootstrap.sh
+    ./configure \
+        --sysconfdir=/etc/frr \
+        --libdir=/usr/lib64/frr \
+        --libexecdir=/usr/lib64/frr \
+        --localstatedir=/var/run/frr \
+        --disable-pimd \
+        --enable-snmp=agentx \
+        --enable-multipath=64 \
+        --enable-ospfclient=yes \
+        --enable-ospfapi=yes \
+        --enable-user=frr \
+        --enable-group=frr \
+        --enable-vty-group=frrvt \
+        --enable-rtadv \
+        --disable-exampledir \
+        --enable-watchfrr \
+        --enable-tcp-zebra \
+        --enable-fpm \
+        --with-pkg-git-version \
+        --with-pkg-extra-version=-MyOwnFRRVersion   
+    make
+    make check PYTHON=/usr/bin/python2.7
+    sudo make install
 
 ### Create empty FRR configuration files
-	sudo mkdir /var/log/frr
-	sudo mkdir /etc/frr
-	sudo touch /etc/frr/zebra.conf
-	sudo touch /etc/frr/bgpd.conf
-	sudo touch /etc/frr/ospfd.conf
-	sudo touch /etc/frr/ospf6d.conf
-	sudo touch /etc/frr/isisd.conf
-	sudo touch /etc/frr/ripd.conf
-	sudo touch /etc/frr/ripngd.conf
-	sudo chown -R frr:frr /etc/frr/
-	sudo touch /etc/frr/vtysh.conf
-	sudo chown frr:frrvt /etc/frr/vtysh.conf
-	sudo chmod 640 /etc/frr/*.conf
+    sudo mkdir /var/log/frr
+    sudo mkdir /etc/frr
+    sudo touch /etc/frr/zebra.conf
+    sudo touch /etc/frr/bgpd.conf
+    sudo touch /etc/frr/ospfd.conf
+    sudo touch /etc/frr/ospf6d.conf
+    sudo touch /etc/frr/isisd.conf
+    sudo touch /etc/frr/ripd.conf
+    sudo touch /etc/frr/ripngd.conf
+    sudo chown -R frr:frr /etc/frr/
+    sudo touch /etc/frr/vtysh.conf
+    sudo chown frr:frrvt /etc/frr/vtysh.conf
+    sudo chmod 640 /etc/frr/*.conf
 
 ### Enable IP & IPv6 forwarding
 
-Edit `/etc/sysctl.conf` and set the following values (ignore the other settings)
+Edit `/etc/sysctl.conf` and set the following values (ignore the other 
+settings)
 
-	# Controls IP packet forwarding
-	net.ipv4.ip_forward = 1
-	net.ipv6.conf.all.forwarding=1
+    # Controls IP packet forwarding
+    net.ipv4.ip_forward = 1
+    net.ipv6.conf.all.forwarding=1
 
-	# Controls source route verification
-	net.ipv4.conf.default.rp_filter = 0
+    # Controls source route verification
+    net.ipv4.conf.default.rp_filter = 0
 
 **Reboot** or use `sysctl` to apply the same config to the running system
 
 ### Add init.d startup files
-	sudo cp redhat/bgpd.init /etc/init.d/bgpd
-	sudo cp redhat/isisd.init /etc/init.d/isisd
-	sudo cp redhat/ospfd.init /etc/init.d/ospfd
-	sudo cp redhat/ospf6d.init /etc/init.d/ospf6d
-	sudo cp redhat/ripngd.init /etc/init.d/ripngd
-	sudo cp redhat/ripd.init /etc/init.d/ripd
-	sudo cp redhat/zebra.init /etc/init.d/zebra
-	sudo chkconfig --add zebra 
-	sudo chkconfig --add ripd
-	sudo chkconfig --add ripngd
-	sudo chkconfig --add ospf6d
-	sudo chkconfig --add ospfd
-	sudo chkconfig --add bgpd
-	sudo chkconfig --add isisd
+    sudo cp redhat/bgpd.init /etc/init.d/bgpd
+    sudo cp redhat/isisd.init /etc/init.d/isisd
+    sudo cp redhat/ospfd.init /etc/init.d/ospfd
+    sudo cp redhat/ospf6d.init /etc/init.d/ospf6d
+    sudo cp redhat/ripngd.init /etc/init.d/ripngd
+    sudo cp redhat/ripd.init /etc/init.d/ripd
+    sudo cp redhat/zebra.init /etc/init.d/zebra
+    sudo chkconfig --add zebra 
+    sudo chkconfig --add ripd
+    sudo chkconfig --add ripngd
+    sudo chkconfig --add ospf6d
+    sudo chkconfig --add ospfd
+    sudo chkconfig --add bgpd
+    sudo chkconfig --add isisd
 
 ### Enable required daemons at startup
 Only enable zebra and the daemons which are needed for your setup
 
-	sudo chkconfig zebra on
-	sudo chkconfig ospfd on
-	sudo chkconfig bgpd on
-	[...] etc (as needed)
+    sudo chkconfig zebra on
+    sudo chkconfig ospfd on
+    sudo chkconfig bgpd on
+    [...] etc (as needed)