I was porting a few programs, originally written for Noah (bash v2) a few years ago, to modern Linux (bash v4): 【插件】终端单词默写软件 【插件】文件管理器（终端资源管理器） 【游戏】推箱子游戏，bash版
The main discrepancy being the assignments of array variables. In bash version 2, I wrote: declare array=("'a' 'b' 'c' 'd'") array=($1) Which, for bash version 4, need to be updated as: declare array=('a' 'b' 'c' 'd') eval array=($1)