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20.04的GCC默认9.40,而libc6最高只有GLIBC_2.30,都无法正常编译安装TCP Brutal。
升级方法如下:(root)
add-apt-repository ppa:ubuntu-toolchain-r/test
apt-get update
apt remove gcc-9 g++-9
apt autoremove
apt-get install gcc-13 g++-13
ln -sf /usr/bin/gcc-13 /usr/bin/gcc
ln -sf /usr/bin/g++-13 /usr/bin/g++
gcc -v
至此GCC应该升到13.1.0了。
(!!!以下需要在focal中使用高版本jammy源,可能会存在一定风险,请先测试后再决定是否需要增加!!!)
升级libc6:(root)
vi /etc/apt/sources.list
增加一个jammy源:deb http://mirrors.aliyun.com/ubuntu/ jammy main
apt-get update
apt install libc6
strings /lib/x86_64-linux-gnu/libc.so.6 |grep GLIBC_
至此应该见到最高版本为GLIBC_2.35
之后就可以正常安装TCP Brutal了。AWS的lightsail, $3.5只有512M内存,22.04跑得很累,很容易爆内存,但是20.04就比较舒服了。以上AWS lightsail $3.5刀 Ubuntu 20.04测试通过。补充:内核已经升到6.6.3!

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