centos安装upx

wget -c http://ftp.tu-chemnitz.de/pub/linux/dag/redhat/el7/en/x86_64/rpmforge/RPMS/ucl-1.03-2.el7.rf.x86_64.rpm
rpm -Uvh ucl-1.03-2.el7.rf.x86_64.rpm
yum install ucl

wget -c http://ftp.tu-chemnitz.de/pub/linux/dag/redhat/el7/en/x86_64/rpmforge/RPMS/upx-3.91-1.el7.rf.x86_64.rpm
rpm -Uvh upx-3.91-1.el7.rf.x86_64.rpm
yum install upx

#upx压缩golang可执行文件

首先加上编译参数-ldflags

$ go build -ldflags '-w -s'
$ ls -lh
-rwxr-xr-x  1 gangan  staff   2.5M Aug 18 00:45 etcd-cli
-rw-r--r--  1 gangan  staff   456B Aug 18 00:34 main.go

可以发现小了近1MB

$ upx etcd-cli
# 此处省略压缩时的打印...
$ ls -lh
-rwxr-xr-x  1 gangan  staff   897K Aug 18 00:49 etcd-cli
-rw-r--r--  1 gangan  staff   456B Aug 18 00:34 main.go