蛮多实用的指令工具的ar,arch,ash,awk,base64,basename,bash,bunzip2,busybox,bzcat,bzip2,cal,cat,chmod,cksum,clear,cmp,comm,cp,cpio,cut,date,dc,dd,df,diff,dirname,dos2unix,dpkg-deb,du,echo,ed,egrep,env,expand,expr,factor,false,fgrep,find,fold,fsync,ftpget,ftpput,getopt,grep,groups,gunzip,gz