/etc/profile で明示的に設定された環境変数が Arch にありません。

/etc/profile修正する前の様子です。

$ cat /etc/profile
# /etc/profile

# Append "$1" to $PATH when not already in.
# This function API is accessible to scripts in /etc/profile.d
append_path () {
    case ":$PATH:" in
        *:"$1":*)
            ;;
        *)
            PATH="${PATH:+$PATH:}$1"
    esac
}

# Append our default paths
append_path '/usr/local/sbin'
append_path '/usr/local/bin'
append_path '/usr/bin'

# Force PATH to be environment
export PATH

# Load profiles from /etc/profile.d
if test -d /etc/profile.d/; then
    for profile in /etc/profile.d/*.sh; do
        test -r "$profile" && . "$profile"
    done
    unset profile
fi

# Unload our profile API functions
unset -f append_path

# Source global bash config, when interactive but not posix or sh mode
if test "$BASH" &&\
   test "$PS1" &&\
   test -z "$POSIXLY_CORRECT" &&\
   test "${0#-}" != sh &&\
   test -r /etc/bash.bashrc
then
    . /etc/bash.bashrc
fi

# Termcap is outdated, old, and crusty, kill it.
unset TERMCAP

# Man is much better than us at figuring this out
unset MANPATH

これらはそれぞれPATH、MANPATHおよび次のとおりですINFOPATH。

$ echo $PATH
/usr/local/bin:/usr/bin:/usr/local/sbin:/home/a/.dotnet/tools:/var/lib/flatpak/exports/bin:/usr/lib/jvm/default/bin:/usr/bin/site_perl:/usr/bin/vendor_perl:/usr/bin/core_perl

$ echo $MANPATH

$ echo $INFOPATH

/etc/profileTeX Liveをインストールした後、プログラムはファイルを見つけることができるように編集しました。

$ cat /etc/profile
# /etc/profile

# Append "$1" to $PATH when not already in.
# This function API is accessible to scripts in /etc/profile.d
append_path () {
    case ":$PATH:" in
        *:"$1":*)
            ;;
        *)
            PATH="${PATH:+$PATH:}$1"
    esac
}

# Append our default paths
append_path '/usr/local/sbin'
append_path '/usr/local/bin'
append_path '/usr/bin'
append_path '/usr/local/texlive/2023/bin/x86_64-linux'

# Force PATH to be environment
export PATH
export MANPATH=/usr/local/texlive/2023/texmf-dist/doc/man:$MANPATH
export INFOMATH=/usr/local/texlive/2023/texmf-dist/doc/info:$INFOPATH

# Load profiles from /etc/profile.d
if test -d /etc/profile.d/; then
    for profile in /etc/profile.d/*.sh; do
        test -r "$profile" && . "$profile"
    done
    unset profile
fi

# Unload our profile API functions
unset -f append_path

# Source global bash config, when interactive but not posix or sh mode
if test "$BASH" &&\
   test "$PS1" &&\
   test -z "$POSIXLY_CORRECT" &&\
   test "${0#-}" != sh &&\
   test -r /etc/bash.bashrc
then
    . /etc/bash.bashrc
fi

# Termcap is outdated, old, and crusty, kill it.
unset TERMCAP

# Man is much better than us at figuring this out
# unset MANPATH

append_path '/usr/local/texlive/2023/bin/x86_64-linux'、export MANPATH=/usr/local/texlive/2023/texmf-dist/doc/man:$MANPATHおよびを追加しましたexport INFOMATH=/usr/local/texlive/2023/texmf-dist/doc/info:$INFOPATH。私もそれをコメントしましたunset MANPATH。reboot3 つの環境変数は次のとおりです。

$ echo $PATH
/usr/local/bin:/usr/bin:/usr/local/sbin:/usr/local/texlive/2023/bin/x86_64-linux:/home/a/.dotnet/tools:/var/lib/flatpak/exports/bin:/usr/lib/jvm/default/bin:/usr/bin/site_perl:/usr/bin/vendor_perl:/usr/bin/core_perl

$ echo $MANPATH
/usr/local/texlive/2023/texmf-dist/doc/man:

$ echo $INFOPATH

PATHMANPATH希望の値に変更しましたが、まだINFOPATH空です。なぜこれが起こるのですか？