Linux script and scriptreplay（一）

前言

偶然发现linux里面两个比较有意思的命令script和scriptreplay,其中script是用来录制命令的，scriptreplay用来重放录制文件。机器为ubuntu。

script和scriptreplay的使用

• 看一下script的帮助文档

script -hUsage: script [options] [file]Options: -a, --append            append the output -c, --command <command> run command rather than interactive shell -r, --return            return exit code of the child process -f, --flush             run flush after each write     --force             use output file even when it is a link -q, --quiet             be quiet -t, --timing[=<file>]   output timing data to stderr (or to FILE) -V, --version           output version information and exit -h, --help              display this help and exit

• 使用script

script -t out.data 2>out.time#以上2>out.time表示将stderr重定向到out.time文件中#之后随意输入命令#最后输入ctrl+d退出

• scriptreplay帮助文档

scriptreplay -hUsage: scriptreplay [-t] timingfile [typescript] [divisor]Options: -t, --timing <file>     script timing output file -s, --typescript <file> script terminal session output file -d, --divisor <num>     speed up or slow down execution with time divisor -V, --version           output version information and exit -h, --help              display this help and exit

• 使用scriptreplay重放命令

scriptreplay -t out.time out.data

下载script和scriptreplay源码

• 找到script的位置

#找到script的位置which script/usr/bin/script#查看找到的文件是否是软连接，是则继续找ls -l /usr/bin/script-rwxr-xr-x 1 root root 14760 Aug  5  2015 /usr/bin/script

• 找到script属于哪个包

dpkg -S /usr/bin/scriptbsdutils: /usr/bin/script#script属于bsdutils这个包的

• 下载bsdutils源码

sudo apt-get source bsdutilsls -l #这里已经下载好了drwxr-xr-x 31 root root    4096 Apr 17 15:55 util-linux-2.20.1-rw-r--r--  1 root root  117861 Sep  3  2015 util-linux_2.20.1-5.1ubuntu20.7.diff.gz-rw-r--r--  1 root root    3257 Sep  3  2015 util-linux_2.20.1-5.1ubuntu20.7.dsc-rw-r--r--  1 root root 6174190 Dec 17  2011 util-linux_2.20.1.orig.tar.gz

• 查找script所在位置

find -L util-linux-2.20.1 -name "*script*"#以下是结果，现在可以去查看相关源代码了util-linux-2.20.1/debian/README.scriptutil-linux-2.20.1/term-utils/script.cutil-linux-2.20.1/term-utils/script.1util-linux-2.20.1/term-utils/scriptreplay.cutil-linux-2.20.1/term-utils/scriptreplay.1util-linux-2.20.1/tests/expected/scriptutil-linux-2.20.1/tests/ts/script

重新编译script

• 用apt-get安装依赖

 sudo apt-get build-dep bsdutils

• 编译

./configuremake