如何在运行 shell 时获取正在运行的终端模拟器？

Question

我正在构建一个替代系统信息报告器，例如neofetch，它工作正常，但有一个问题。 运行 bash 时无法获取当前终端模拟器。 我尝试了这些命令：

readlink "/proc/$(cat /proc/$(echo $$)/stat|cut -d ' ' -f 4)/exe"
ps -o comm= -p $(ps -o ppid= -p $$)

正常执行时它们工作得很好，但是当我将它们放入 bash 脚本中时，它只返回 bash 或 /usr/bin/bash。

我想找到一个始终报告终端仿真器而不是 shell 的命令。 如果您愿意，这里是完整的代码：

#!/bin/sh

# yes. no logos. because why not?

# source the config file
if [ "$colorsoff" = "" ]; then
    colorsoff=0
fi

[ -e /etc/betterfetchrc ] && . /etc/betterfetchrc 2> /dev/null
[ -e ~/.betterfetchrc ] && . ~/.betterfetchrc 2> /dev/null

CURRENT_VERSION_FILE="/etc/betterfetch-version"  # Path to the file containing the current version
REMOTE_VERSION_URL="https://raw.githubusercontent.com/sctech-tr/betterfetch/main/betterfetch-version"

# Fetch the remote version from the URL
REMOTE_VERSION=$(curl -s $REMOTE_VERSION_URL)

# Read the current version from the version file
if [ -f "$CURRENT_VERSION_FILE" ]; then
  CURRENT_VERSION=$(cat "$CURRENT_VERSION_FILE")
else
  echo "error: current version file not found."
  exit 1
fi

# Compare the remote version with the current version
if [ "$REMOTE_VERSION" != "$CURRENT_VERSION" ]; then
  echo "betterfetch ($REMOTE_VERSION) is available! you are currently on version $CURRENT_VERSION."
  exit 0
fi



# the meat and potatoes, actual fetch

# only set these if they are not already set by the config file
[ -z "$os" ] && . /etc/os-release 2>/dev/null || export os="Unknown"
[ -z "$host" ] && host=$(cat /proc/sys/kernel/hostname)
[ -z "$kernel" ] && kernel=$(sed "s/version // ; s/ (.*//" /proc/version)
[ -z "$uptime" ] && uptime=$(uptime -p 2>/dev/null | sed "s/up //")
[ -z "$shell" ] && shell=$(printf "$SHELL" | sed "s/\/bin\///" | sed "s/\/usr//")
[ -z "$de" ] && de=$(echo $XDG_CURRENT_DESKTOP)
[ -z "$terminal" ] && terminal=$(readlink "/proc/$(cat /proc/$(echo $$)/stat|cut -d ' ' -f 4)/exe")

printf "$USER@$host\n"
printf "OS           $os\n"
printf "Kernel       $kernel\n"
printf "Uptime       $uptime\n"
printf "Shell        $shell\n"
printf "DE           $de\n"
printf "Terminal     $terminal\n"
if [ "$colorsoff" != 1 ]; then
    printf "\033[0;31m● \033[0;32m● \033[0;33m● \033[0;34m● \033[0;35m● \033[0;36m● \033[0;37m●\033[0m\n"
fi

Answer 1

一般情况下是不可能做到的。您可以遍历 pid 层次结构直到从已知列表中找到终端模拟器的唯一最有效的方法。