[shell] add a small bashrc

files/shell/.bashrc

@@ -0,0 +1,44 @@
+# ~/.bashrc
+#
+# M. Thomas
+
+# if not running interactively, don't do anything
+case $- in
+  *i*) ;;
+  *) return ;;
+esac
+
+# ============================== Prompt
+git_branch() {
+    if $(git rev-parse --git-dir > /dev/null 2>&1); then
+        local branch_name=$(git branch 2> /dev/null | sed -e '/^[^*]/d' -e 's/* \(.*\)/\1/')
+        echo "${branch_name}  "
+    fi
+}
+
+HOST="\[\033[0;33m\]\h\[\033[m\]"
+GIT="\[\033[0;31m\]\$(git_branch)\[\033[m\]"
+DIR="\[\033[0;34m\]\w\[\033[m\]"
+
+PROMPT_COMMAND=__prompt_command
+__prompt_command() {
+  local EXIT="$?"
+  export PS1="${HOST} ${DIR} ${GIT}"
+
+  local red_lambda='\[\033[0;31m\]λ>\[\033[00m\] '
+  local green_lambda='\[\033[0;32m\]λ>\[\033[00m\] '
+
+  if [ $EXIT != 0 ]
+  then
+    PS1+=$red_lambda
+  else
+    PS1+=$green_lambda
+  fi
+}
+
+# ============================== vi-Mode
+set -o vi
+
+# ============================== Source other definitions
+[ -f ~/.shellrc.local ] && source ~/.shellrc.local
+[ -f ~/.shellrc.alias ] && source ~/.shellrc.alias