Added pwndbg gdb plugin. Adapted peda install to allow switching.

gdb now doesn't automatically load peda or pwndbg, instead provide init-X function and provide wrapper scripts

peda/install

@@ -1,5 +1,29 @@
 #!/bin/bash
+set -eu -o pipefail
 
 git clone --depth 1 https://github.com/longld/peda.git
+
+mkdir bin
+cat > bin/gdb-peda <<EOF
+#!/bin/sh
+exec gdb -q -ex init-peda $@
+EOF
+chmod +rx bin/gdb-peda
+
 cd peda
-echo "source $PWD/peda.py" >> ~/.gdbinit
+#echo "source $PWD/peda.py" >> ~/.gdbinit
+if ! grep "init-peda" ~/.gdbinit; then
+    cat >> ~/.gdbinit <<EOF
+
+####
+# added by ctf-tools
+define init-peda
+    source $PWD/peda.py
+end
+document init-peda
+    Initializes the PEDA (Python Exploit Development Assistant for GDB) framework
+end
+####
+
+EOF
+fi

pwndbg/install

@@ -0,0 +1,29 @@
+#!/bin/bash
+set -eu -o pipefail
+
+git clone --depth 1 git clone https://github.com/zachriggle/pwndbg
+
+mkdir bin
+cat >> bin/pwndbg <<EOF
+#!/bin/sh
+exec gdb -q -ex init-pwndbg $@
+EOF
+chmod +rx bin/pwndbg
+
+cd pwndbg
+if ! grep "init-pwndbg" ~/.gdbinit; then
+    cat >> ~/.gdbinit <<EOF
+
+####
+# added by ctf-tools
+define init-pwndbg
+    source $PWD/gdbinit.py
+end
+document init-pwndbg
+    Initializes the pwndbg gdb extension (https://github.com/zachriggle/pwndbg)
+end
+####
+
+EOF
+fi
+