有没有办法知道当前 bash 会话中的 `script` 命令是否为运行？

Question

我正在尝试向我的 ~/.zshrc 文件添加一个命令来记录命令行输入和输出。我有 script (https://www.tecmint.com/record-and-replay-linux-terminal-session-commands-using-script/) 命令需要运行ning 但我遇到了一个问题，它似乎无限地尝试记录我的会话。我相信这是因为当您运行 script 命令时，它会启动一个新的 bash 会话，然后运行s ~/.zshrc 然后尝试记录重新启动会话的会话（等等）。这会导致它进入尝试记录会话的无限循环。

尝试 1 我的相关作品 ~/.zshrc

# RECORD COMMAND INPUT AND OUTPUT
LOG_PATH=/var/log/terminal/$(date +'%Y%m%d')
LOG_FILE=${LOG_PATH}/$(date +'%H%M%S').log
mkdir -p ${LOG_PATH}
script ${LOG_FILE}

这会导致会话不断打印以下内容：

Script started, output file is /var/log/terminal/20200109/141849.log
Script started, output file is /var/log/terminal/20200109/141850.log
Script started, output file is /var/log/terminal/20200109/141851.log
Script started, output file is /var/log/terminal/20200109/141852.log
Script started, output file is /var/log/terminal/20200109/141853.log
Script started, output file is /var/log/terminal/20200109/141854.log
Script started, output file is /var/log/terminal/20200109/141855.log
... repeat infinitely ...

尝试 2 解决此问题的一种尝试是检查文件是否已经存在，然后继续录制（这有点管用，但有时它会创建 2 个文件，或者有时录制不会开始说如果我快速连续打开 2 个命令会话）。

升级脚本

# RECORD COMMAND INPUT AND OUTPUT
# Check if the recording of a file for the given time has already started
# as it seems that once you start the script recording it re-starts the session
# which in turn re-runs this file which attempts to script again running into an infinite loop

LOG_PATH=/var/log/terminal/$(date +'%Y%m%d')
LOG_FILE=${LOG_PATH}/$(date +'%H%M%S').log
if [[ ! -f $LOG_FILE ]]; then
        mkdir -p ${LOG_PATH}
        script ${LOG_FILE}
fi

同样，这要么不会产生任何记录（在快速打开 2 个会话的情况下），要么会导致记录完成两次

Script started, output file is /var/log/terminal/20200109/141903.log
Script started, output file is /var/log/terminal/20200109/141904.log

尝试 3 另一个尝试是检查 bash 历史并查看最后一个命令是否包含单词 script。此尝试的问题是 bash 会话在启动时似乎没有历史记录，因此出现以下错误（然后像第一次尝试一样无限地尝试启动记录会话）：

# RECORD COMMAND INPUT AND OUTPUT
# Check what the last command was to make sure that it wasn't the script starting
# as it seems that once you start the script recording it re-starts the session
# which in turn re-runs this file which attempts to script again running into an infinite loop

LAST_HISTORY=$(history -1)
if [[ "$LAST_HISTORY" != *"script"* ]]; then
        LOG_PATH=/var/log/terminal/$(date +'%Y%m%d')
        LOG_FILE=${LOG_PATH}/$(date +'%H%M%S').log
        mkdir -p ${LOG_PATH}
        script ${LOG_FILE}
fi

输出

Last login: Thu Jan  9 14:27:30 on ttys009
Script started, output file is /var/log/terminal/20200109/142754.log
Script started, output file is /var/log/terminal/20200109/142755.log
omz_history:fc:13: no such event: 0
omz_history:fc:13: no events in that range
Script started, output file is /var/log/terminal/20200109/142755.log
omz_history:fc:13: no such event: 0
omz_history:fc:13: no events in that range
Script started, output file is /var/log/terminal/20200109/142755.log
Script started, output file is /var/log/terminal/20200109/142756.log
^C%                                                                                                                                                                    danielcarmo@Daniels-MacBook-Pro-2 git %

如有任何建议或想法，我们将不胜感激。

Answer 1

与其试图弄清楚 script 是否是运行，不如为自己留下一个面包屑：

if [ -z "$BEING_LOGGED" ]
then
  export BEING_LOGGED="yes"
  LOG_PATH="/var/log/terminal/$(date +'%Y%m%d')"
  LOG_FILE="${LOG_PATH}/$(date +'%H%M%S').log"
  mkdir -p "${LOG_PATH}"
  exec script "${LOG_FILE}"
fi

第一次获取文件时，BEING_LOGGED 将被取消设置。当调用 script 并再次获取文件时，它将被设置，您可以跳过日志记录。

Answer 2

script 将变量 SCRIPT 添加到命令 it 运行s 的环境中。您可以检查一下以确定 script 是否需要运行.

# RECORD COMMAND INPUT AND OUTPUT
log_path=/var/log/terminal/$(date +'%Y%m%d')
log_file=${log_path}/$(date +'%H%M%S').log
mkdir -p "${log_path}"
<b>[ -z "$SCRIPT" ] && </b>script "${log_file}"

SCRIPT 的值是要记录到的文件的名称。

有没有办法知道当前 bash 会话中的 `script` 命令是否为运行？

Is there a way to know if the `script` command is running in the current bash session?

bash

shell

zsh

zshrc

有没有办法知道当前 bash 会话中的 `script` 命令是否为 运行？

Is there a way to know if the `script` command is running in the current bash session?

bash

shell

zsh

zshrc

有没有办法知道当前 bash 会话中的 `script` 命令是否为运行？