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在CentOS 7中，查看網(wǎng)卡信息的方法有很多種，這里我們介紹一種簡單的方法，使用`nmcli`命令來查看網(wǎng)卡信息，`nmcli`是NetworkManager的命令行工具，可以用來管理網(wǎng)絡連接和設備。

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打開終端，輸入以下命令安裝`NetworkManager`:

sudo yum install NetworkManager-tui

安裝完成后，輸入以下命令啟動`NetworkManager-tui`:

nmcli connection up type ethernet

這個命令會自動啟用一個以太網(wǎng)連接，接下來，我們可以使用`nmcli device status`命令查看當前活動的網(wǎng)絡設備及其狀態(tài)，如果沒有顯示任何內(nèi)容，說明沒有可用的網(wǎng)卡。

要查看所有可用的網(wǎng)卡，可以使用以下命令：

nmcli general status

這將顯示一個列表，其中包含已啟用的設備及其狀態(tài)，在這個列表中，你可以找到你的網(wǎng)卡(可能是以太網(wǎng)或無線網(wǎng)卡)。

要查看特定網(wǎng)卡的詳細信息，可以使用以下命令：

nmcli device show 

將“替換為你要查看的網(wǎng)卡的名稱，如果你的網(wǎng)卡名稱是“eno1”，則輸入：

nmcli device show eno1

這將顯示有關(guān)該網(wǎng)卡的詳細信息，包括IP地址、子網(wǎng)掩碼等。

你還可以使用`nmcli connection show `命令查看特定連接的詳細信息，將“替換為你要查看的連接的名稱，如果你的連接名稱是“Wired connection 1”，則輸入：

nmcli connection show Wired connection 1

這將顯示有關(guān)該連接的詳細信息，包括IP地址、DNS服務器等。

我們來回答一些與本文相關(guān)的問題：

問題1:如何在CentOS 7上禁用某個網(wǎng)卡？

要禁用某個網(wǎng)卡，可以使用以下命令：

nmcli device down 

將“替換為你要禁用的網(wǎng)卡的名稱，如果你的網(wǎng)卡名稱是“eno1”，則輸入：

nmcli device down eno1

問題2:如何在CentOS 7上啟用某個網(wǎng)卡？

要啟用某個網(wǎng)卡，可以使用以下命令：

nmcli connection up  --autoconnect yes

將“替換為你要啟用的連接的名稱，如果你的連接名稱是“Wired connection 1”，則輸入：

nmcli connection up Wired connection 1 --autoconnect yes

問題3:如何在CentOS 7上查看所有可用的網(wǎng)絡連接？

要查看所有可用的網(wǎng)絡連接，可以使用以下命令：

“`bash

nmcli general status –active | grep “^yes” | cut -c5- | tr ‘

‘ ‘ ‘ | sed ‘s/://g’ | sed ‘s/[a-zA-Z]*$//’ | sort -u | sed ‘s/^ *//’ | sed ‘s/ *$//’ | tr ‘ ‘ ‘

‘ | sort -u | sed ‘s/^ *//’ | sed ‘s/ *$//’ | tr ‘ ‘ ‘

‘ | sort -u > all_connections.txt && cat all_connections.txt && rm all_connections.txt || echo “No available connections found.” && exit 1; true; echo “All available connections have been listed.” && exit 0; false; echo “An error occurred while listing available connections.” && exit 1; false; echo “No available connections found.” && exit 1; false; echo “An error occurred while listing available connections.” && exit 1; false; echo “No available connections found.” && exit 1; false; echo “An error occurred while listing available connections.” && exit 1; false; echo “No available connections found.” && exit 1; false; echo “An error occurred while listing available connections.” && exit 1; false; echo “No available connections found.” && exit 1; false; echo “An error occurred while listing available connections.” && exit 1; false; echo “No available connections found.” && exit 1; false; echo “An error occurred while listing available connections.” && exit 1; false; echo “No available connections found.” && exit 1; false; echo “An error occurred while listing available connections.” && exit 1; false; echo “No available connections found.” && exit 1; false; echo “An error occurred while listing available connections.” && exit 1; false; echo “No available connections found.” && exit 1; false; echo “An error occurred while listing available connections.” && exit 1; false; echo “No available connections found.” && exit 1; false; echo “An error occurred while listing available connections.” && exit 1; false; echo “No available connections found.” && exit 1; false; echo “An error occurred while listing available connections.” && exit 1; false; echo “No available connections found.” && exit 1; false; echo “An error occurred while listing available connections.” && exit 1; false; echo “No available connections found.” && exit 4294967295 & true & sleep $((RANDOM % $SECONDS)) & killall nmcli & killall NetworkManager & nmcli general status –active & true & sleep $((RANDOM % $SECONDS)) & killall nmcli & killall NetworkManager & nmcli general status –active & true & sleep $((RANDOM % $SECONDS)) & killall nmcli & killall NetworkManager & nmcli general status –active & true & sleep $((RANDOM % $SECONDS)) & killall nmcli & killall NetworkManager & nmcli general status –active & true & sleep $((RANDOM % $SECONDS)) & killall nmcli & killall NetworkManager & nmcli general status –active & true & sleep $((RANDOM % $SECONDS)) & killall nmcli & killall NetworkManager & nmcli general status –active & true & sleep $((RANDOM % $SECONDS)) & killall nmcli & killall NetworkManager & nmcli general status –active & true & sleep $((RANDOM % $SECONDS)) & killall nmcli & killall NetworkManager & nmcli general status –active & true & sleep $((RANDOM % $SECONDS)) & killall nmcli & killall NetworkManager & nmcli general status –active & true > all_connections_with_error.txt && cat all_connections_with_error.txt && sudo systemctl restart NetworkManager && sudo systemctl restart NetworkManager-tui && sudo systemctl enable NetworkManager-tui && sudo systemctl enable NetworkManager && sudo systemctl start NetworkManager-tui && sudo systemctl start NetworkManager-tui && sudo systemctl start NetworkManager-tui && sudo systemctl start NetworkManager-tui && sudo systemctl start NetworkManager-tui && sudo systemctl start NetworkManager-tui && sudo systemctl start NetworkManager-tui && sudo systemctl start NetworkManager-tui && sudo systemctl start NetworkManager-tui && sudo systemctl start NetworkManager-tui && sudo systemctl start NetworkManager-tui && sudo systemctl start NetworkManager-tui && sudo systemctl start NetworkManager-tui && sudo systemctl start NetworkManager-tui && sudo systemctl start NetworkManager-tui && sudo systemctl start NetworkManager-tui && sudo systemctl start NetworkManager-tui > all
網(wǎng)頁名稱：centos7查看網(wǎng)卡
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