1，下載circos，http://circos.ca/software/download/circos/，放置到常用文件夾；
2，選擇文件中的circos命令，並添加到Mac的bin文件夾中，使得circos命令可用，類似於pip、conda等命令，如下圖：
添加方法：
已知circos文件如下：
終端執行命令：
export PATH=$PATH:`pwd`/circos-0.69-9/bin
3，終端使用，列出circos依賴的Perl包命令：circos -module
上圖僅顯示部分module結果；
4，若顯示missing，則需安裝；
先進去：perl -MCPAN -e shell
安裝module：install XXX
5，最簡單出圖
把下面的內容存儲到任意目錄下的任意文件比如ehbio.conf下，然後運行circos -conf ehbio.conf就可以獲得circos的圖circos.png和circos.svg。（建議在終端常用工作目錄中使用circos命令）
ehbio.conf內容（引用如下）：
karyotype = data/karyotype/karyotype.human.txt
<ideogram>
<spacing>
default = 0.005r
</spacing>
radius = 0.9r
thickness = 20p
fill = yes
</ideogram>
################################################################
# The remaining content is standard and required. It is imported
# from default files in the Circos distribution.
#
# These should be present in every Circos configuration file and
# overridden as required. To see the content of these files,
# look in etc/ in the Circos distribution.
<image>
# Included from Circos distribution.
<<include etc/image.conf>>
</image>
# RGB/HSV color definitions, color lists, location of fonts, fill patterns.
# Included from Circos distribution.
<<include etc/colors_fonts_patterns.conf>>
# Debugging, I/O an dother system parameters
# Included from Circos distribution.
<<include etc/housekeeping.conf>>
6，結果顯示如下即可：
