bash: turn aliases into scripts

This makes the common actions previously encoded as bash aliases
independent of the shell (I'm using /bin/sh for the scripts), which will
make a potential switch to zsh easier by having less bash-specific stuff
around.

bin/,head

@@ -0,0 +1,4 @@
+#!/bin/sh
+# Head as much as fits on screen
+exec head -n $(echo "$(tput lines) - 5" | bc) "$@"
+

bin/,mpath

@@ -0,0 +1,3 @@
+#!/bin/sh
+echo "$MANPATH" | tr -s ":" "\n"
+

bin/,myip

@@ -0,0 +1,9 @@
+#!/bin/sh
+# A few options to get public IP address on command line. The dig solution
+# below using the OpenDNS resolver doesn't work when connected to
+# ExpressVPN because all DNS requests are handled by the ExpressVPN DNS
+# servers and the OpenDNS DNS resolver is blocked.
+exec curl -s https://ifconfig.co
+#exec curl -s https://ifconfig.me
+#exec dig +short myip.opendns.com @resolver1.opendns.com
+

bin/,myipinfo

@@ -0,0 +1,3 @@
+#!/bin/sh
+exec curl -s ipinfo.io
+

bin/,path

@@ -0,0 +1,3 @@
+#!/bin/sh
+echo "$PATH" | tr -s ":" "\n"
+

bin/,tail

@@ -0,0 +1,4 @@
+#!/bin/sh
+# Tail as much as fits on screen
+exec tail -n $(echo "$(tput lines) - 5" | bc) "$@"
+

bin/,tmux

@@ -0,0 +1,3 @@
+#!/bin/sh
+exec tmux -f "$XDG_CONFIG_HOME/tmux/tmux.conf" "$@"
+

files/bashrc

@@ -175,23 +175,6 @@ alias vim='nvim'
 alias grep="grep --color=auto"
 alias egrep="egrep --color=auto"
 alias fgrep="fgrep --color=auto"
-alias path='echo $PATH | tr -s ":" "\n"'
-alias mpath='echo $MANPATH | tr -s ":" "\n"'
-
-alias tmux='tmux -f "$XDG_CONFIG_HOME/tmux/tmux.conf"'
-
-# Head and tail as much as fits on screen
-alias head='head -n $((${LINES:-15}-5))'
-alias tail='tail -n $((${LINES:-15}-5))'
-
-# A few options to get public IP address on command line. The dig solution
-# below using the OpenDNS resolver doesn't work when connected to
-# ExpressVPN because all DNS requests are handled by the ExpressVPN DNS
-# servers and the OpenDNS DNS resolver is blocked.
-alias ipinfo="curl -s ipinfo.io"
-alias myip="curl -s https://ifconfig.co"
-#alias myip="curl -s https://ifconfig.me"
-#alias myip="dig +short myip.opendns.com @resolver1.opendns.com"
 
 alias dark='change_bg dark'
 alias light='change_bg light'