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无需任何用户交互即可升级 ubuntu 软件包和内核

tag-icon • tag-icon shell-script ubuntu package-management
无需任何用户交互即可升级 ubuntu 软件包和内核 
#!/bin/bash

### change from Static IP to DHCP
H=$(date +%H)
if (( 11 <= 10#$H && 10#$H < 18 )); then
echo -e  "network:\n  version: 2\n  renderer: NetworkManager\n  ethernets:\n   enp0s3:\n    dhcp4: yes" > /etc/netplan/01-network-manager-all.yaml
sudo netplan apply

### create the log file 
var=$(ip a | grep -A 3 ens33 | grep "inet " | cut -d " " -f 6) 
echo DHCP IP= $var > logfile
echo ########################################

### update and upgrade packages without user interaction
sudo apt-get update && apt-get --yes --force-yes upgrade > tmp.txt

### add the lists to the log file
echo "packages that were updated" >> logfile
awk '/^the following/{p=0} /NEW packages will be installed/{p=1} p' tmp.txt >> logfile
echo ########################################
echo "packages being cleaned" >> logfile
awk '/^the following/{p=0} /packages were automatically installed and are no longer required/{p=1} p' tmp.txt >> logfile
echo ########################################
### remove the not required packages
sudo apt autoremove

### chcek if reboot needed or not
cat tmp.txt | grep -A 20 "the following NEW packages will be installed:" |grep "grub-common-*" > tmp2.txt
cat tmp.txt | grep -A 20 "the following NEW packages will be installed:" |grep "grub-pc-*" >> tmp2.txt
cat tmp.txt | grep -A 20 "the following NEW packages will be installed:" |grep "linx-image-*" >> tmp2.txt
cat tmp.txt | grep -A 20 "the following NEW packages will be installed:" |grep "linux-headers-*" >> tmp2.txt

if [ -s tmp2.txt ]
then
    echo "there's kernel/grub update happened" >> logfile
    echo ########################################
    reboot
else
    echo "there's no kernel/grub update happened" >> logfile
    echo ########################################
fi

### clean the tmp file
rm -f tmp.txt tmp2.txt
 
### last reboot time
uptime=$(uptime -s)
echo last reboot time= $uptime >> logfile
echo ########################################
fi

### back IP again to Static
echo -e  "network:\n  version: 2\n  renderer: NetworkManager\n  ethernets:\n   enp0s3:\n    addresses:\n     - 192.168.100.100/24" > /etc/netplan/01-network-manager-all.yaml
sudo netplan apply

这是我尝试过的代码，但输出不正确，我不确定我的问题在哪里

答案1

你的脚本中有错别字。在 apt 的输出中写下“The following...”，以大写 T 开头。我在 中看到的另一个拼写错误grep linx-image。我建议您查看一下apt list --upgradable系统上是否可用。我假设它的输出永远不会被触及，因为它不是一个交互式命令。

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