sed的一個問題 - Linux

我手邊有一個Archlinux pacman安裝清單如下 ：

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#install.txt

atom #(see: C1. Configure Atom editor)
code #(see: C4. Configure vscode that like atom editor)
wget
p7zip
networkmanager
network-manager-applet #(attach to GUI setting)
gnome-nettool #(GUI network manager)
chromium
rsync
# (rsync is a good tool for backup on the local and the remote,
# It can implement copy and exclude some files or directories:
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我要使用sed正規劃處理把＃註解清除

查了一下sed的用法 寫個shell如下 ：

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#install.sh

pacman_cmd="pacman -S "
install_cmd=$(sed -e "s/#.*//" -e "s/^/${pacman_cmd}/" $1)
echo -e "\e[1;32m${install_cmd}\e[0m"
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最後echo那段是顯示sed之後結果

執行的指令為 :

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sh install.sh install.txt
----------------------------------------------------------------

期望的輸出如下 ：

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pacman -S atom
pacman -S code
pacman -S wget
pacman -S p7zip
pacman -S networkmanager
pacman -S network-manager-applet
pacman -S gnome-nettool
pacman -S chromium
pacman -S rsync
----------------------------------------------------------------

但實際的結果如下 ：

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pacman -S atom
pacman -S code
pacman -S wget
pacman -S p7zip
pacman -S networkmanager
pacman -S network-manager-applet
pacman -S gnome-nettool
pacman -S chromium
pacman -S rsync
pacman -S
pacman -S
----------------------------------------------------------------

多了2個空的pacman -S

我知道是最後兩行的#沒被消掉

但是sed應該有把它消掉呀QQ

其他都正確

到這邊就不會處理了orz

還請板上高手幫忙 謝謝！

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