dotbash_tmux

#!/bin/bash
#
# Alexs .bash configuration
#
# tmux configuration

# we supress TMUX to work nicely with TMATE
TMUX_SESSION_COUNT=`TMUX="" tmux list-sessions 2> /dev/null | wc -l`
if test $TMUX_SESSION_COUNT -gt 0; then
    TMUX_SESSION_NAMES=`TMUX="" tmux ls | cut -d ':' -f 1 | sed ':a;N;$!ba;s/\n/ /g'`
fi

# Stop C-s triggering flow control
stty -ixon

if [[ `whoami` == "root" ]]; then
    function sysmon()
    {
	if ! tmux has-session -t system; then
	    if which fish > /dev/null; then
		tmux new-session -d -s system fish
            else		    
	        tmux new-session -d -s system
            fi
            HTOPRC="${HOME}/.config/htop/${HOSTNAME}_htoprc"
            if [ -e ${HTOPRC} ]; then
                cp ${HTOPRC} "${HOME}/.config/htop/htoprc"
            fi
 	    tmux new-window -t system -n 'htop' 'htop'
 	    tmux new-window -t system -n 'iotop' 'iotop -P -o -d 30'
            if ! systemctl is-active --quiet powertop.service; then
 	        tmux new-window -t system -n 'powertop' 'powertop'
            fi
	fi
	tmux attach-session -t system
    }
fi

# From: http://brainscraps.wikia.com/wiki/Renumbering_tmux_Windows
function tmux_renumber
{
    for session in $(tmux ls | awk -F: '{print $1}') ;do
	active_window=$(tmux lsw -t ${session} | awk -F: '/\(active\)$/ {print $1}')
	inum=1
	for window in $(tmux lsw -t ${session} | awk -F: '{print $1}') ;do
	    if [ ${window} -gt ${inum} ] ;then
		echo "${session}:${window} -> ${session}:${inum}"
		tmux movew -d -s ${session}:${window} -t ${session}:${inum}
	    fi
	    if [ ${window} = ${active_window} ] ;then
		new_active_window=${inum}
	    fi
	    inum=$((${inum}+1))
	done
	tmux select-window -t ${session}:${new_active_window}
    done
}

# Push the current window to the end of the stack
function tmux_push_to_end
{
    focus_cmd=""
    if [ "$1" == "" ]; then
	active_window=$(tmux lsw | awk -F: '/\(active\)$/ {print $1}')
    else
	focus_cmd="-d"
	active_window=$1
    fi

    inum=0
    for window in $(tmux lsw | awk -F: '{print $1}') ;do
	if [ ${window} -gt ${inum} ] ;then
	    inum=${window}
	fi
    done
    tmux movew ${focus_cmd} -s ${active_window} -t $((${inum}+1))
}

# Attach or create a new session
function tmux_attach_or_new
{
    session=$1
    if [[ $TMUX == *tmate* ]]; then
        TMUX="" tmux attach -d -t ${session}
    else
        tmux attach -d -t ${session} || tmux new -s ${session} fish
    fi
}

alias tn="tmux_attach_or_new "
alias ta="tmux_attach_or_new "

# Get the Tmux Plugin Manager
function tmux_get_tpm
{
    git clone https://github.com/tmux-plugins/tpm ~/.tmux/plugins/tpm
}

# Sync the environment of an existing shell
#
#  tmux already updates the environment according to
#  the update-environment settings in the config. However
#  for existing shells you need to sync from from tmux's view
#  of the world.
function tmux_sync_env
{
    external_env=`tmux showenv | grep -v "^-"`
    export ${external_env}
}
alias se="tmux_sync_env"

function tmux_set_name
{
    tmux rename-window $(basename `pwd`)
}

if [[ $TMUX == *tmate* ]]; then
    TMATE_MSG="inside TMATE"
    function tmate_session
    {
        tmate show-messages | grep "Remote session:"
    }
    function tmate_ro_session
    {
        clear
        tmate show-messages | grep "Remote session read only:"
    }
fi

alias .tmux=". ~/.bash_tmux && TMUX="" tmux source-file ~/.tmux.conf 2> /dev/null"
echo "loading .bash_tmux ($TMUX_SESSION_COUNT sessions - $TMUX_SESSION_NAMES) $TMATE_MSG"
export USING_TMUX=1