自定义bash终端显示信息

alias __git_current_commit='git log --pretty=format:%h -1'

alias __git_current_branch='git rev-parse --abbrev-ref HEAD >& /dev/null && echo " (git rev-parse --abbrev-ref HEAD -> __git_current_commit)"'

update_ps1() {

PS1='\033[1;36m\u@\h:\033[1;32m\wKaTeX parse error: Undefined control sequence: \0 at position 19: ...rse_git_branch)\̲0̲33[0m (\t)\n'

}

PROMPT_COMMAND=update_ps1

export PS1