Dotfiles config update (2022-04-15)

.bashrc

@@ -134,31 +134,72 @@ esac
 
 # some more ls aliases
 alias grep='grep --color=auto'
-alias cat='batcat --style=plain --paging=never'
+if [ -f /usr/bin/batcat ] ; then
-alias ls='exa --group-directories-first'
+  alias cat='batcat --style=plain --paging=never'
-alias tree='exa -T'
+elif [ -f /usr/bin/bat ] ; then
+  alias cat='bat --style=plain --paging=never'
+fi
+if [ -f /usr/bin/exa ] ; then
+  alias ls='exa --group-directories-first'
+  alias tree='exa -T'
+else
+  alias ls="ls --color=auto"
+fi
 alias ll='ls -l'
 alias la='ls -A'
 alias l='ls -CF'
 
+echo ""
+echo -e -n "\e[32m# Preparing to start \e[0m\e[35mbash\e[0m \e[32mshell...\e[0m"
 #os_system="Devuan 4"
-os_system=$(lsb_release -d | tr -s " " | cut -d ":" -f 2)
+os_system=$(lsb_release -d 2> /dev/null | tr -s " " | cut -d ":" -f 2)
-os_system=$(echo ${os_system})
+if [ -z "${os_system}" ] ; then
+  os_system="Unknown"
+else
+  os_system=$(echo ${os_system})
+fi
 kernel=$(uname -r)
-uptime=$(uptime | tr -s " " | cut -d "," -f 1)
+uptime=$(uptime 2> /dev/null | tr -s " " | cut -d "," -f 1)
-uptime=$(echo ${uptime})
+if [ -z "${uptime}" ] ; then
+  uptime="Unknown"
+else
+  uptime=$(echo ${uptime})
+fi
 #shell="5.1.4" # Run bash --version
 shell=$(bash --version | head -1 | tr -s " " | cut -d " " -f 4 | cut -d "(" -f 1 | cut -d "-" -f 1)
 resolution=$(xrandr 2> /dev/null | grep "*" | head -1  | tr -s " " | cut -d " " -f 2)
+if [ -z "${resolution}" ] ; then
+  resolution="No display"
+fi
 user_loaded=$(whoami)
 home_user="${HOME}"
-cpu_model=$(lscpu | grep "Model name:" | tr -s " " | cut -d ":" -f 2)
+if [ -f /proc/cpuinfo ] ; then
-cpu_model=$(echo ${cpu_model})
+  cpu_model=$(cat /proc/cpuinfo | grep -i "model name" | head -1 | tr -s " " | cut -d ":" -f 2)
-mem_total=$(lsmem | grep "Total online memory:" | tr -s " " | cut -d ":" -f 2)
+  cpu_model=$(echo ${cpu_model})
-mem_total=$(echo ${mem_total})
+elif [ -f /usr/bin/lscpu ] ; then
+  cpu_model=$(lscpu 2>/dev/null | grep -i "Model name:" | tr -s " " | cut -d ":" -f 2)
+  cpu_model=$(echo ${cpu_model})
+else
+  cpu_model="Unknown"
+fi
+if [ -f /usr/bin/lsmem ] ; then
+  mem_total=$(lsmem | grep "Total online memory:" | tr -s " " | cut -d ":" -f 2)
+  mem_total=$(echo ${mem_total})
+elif [ -f /proc/meminfo ] ; then
+  mem_total_kb=$(cat /proc/meminfo | grep -i "memtotal" | tr -s " " | cut -d ":" -f 2)
+  mem_total_kb_num=$(echo ${mem_total_kb} | cut -d " " -f 1)
+  mem_total_gb=$(expr ${mem_total_kb_num} / 1024 / 1024)
+  mem_total=$(echo ${mem_total_gb})
+else
+  mem_total="Unknown"
+fi
 arch_system="${HOSTTYPE}"
 hostname="${HOSTNAME}"
-session_type="${XDG_SESSION_TYPE}"
+if [ -z "${XDG_SESSION_TYPE}" ] ; then
+  session_type="tty"
+else
+  session_type="${XDG_SESSION_TYPE}"
+fi
 
 clear
 echo -e "                                       "