Linux命令笔记
Linux命令笔记
查看系统当前使用systemd还是sysvinit
dpkg -l systemd-sysv
dpkg -l sysvinit-core
ipmitool修改带外管理ip
ipmitool lan print 1
ipmitool lan set 1 ipsrc static
ipmitool lan set 1 ipaddr $ipmi_ipaddr
ipmitool lan set 1 netmask $ipmi_netmask
ipmitool lan set 1 defgw ipaddr $ipmi_gateway
暂停和恢复进程
处于暂停(TASK_STOPPED)状态的进程，依然处于可运行队列，但调度器不会选择它来执行。
kill -STOP $PID
kill -CONT $PID
apt update expired 报错
apt-get -o Acquire::Check-Valid-Until=false update
MTU测试
ping -c 3 -s 1472 -M do 114.114.114.114
vxlan mtu = 1450 = 1500 – 20(ip头) – 8(udp头) – 8(vxlan头) – 14(以太网头) 【cost: 50】 gre mtu = 1462 = 1500 – 20(ip头) – 4(gre头) – 14(以太网头)【cost: 38】 Wireguard = 1420【cost: 80】
吃满内存
tail /dev/zero
sed去除彩色
sed -r 's/\x1B\[([0-9]{1,2}(;[0-9]{1,2})?)?[m|K]//g'
debian apt update 缺少key
提示：
W: There is no public key available for the following key IDs:
112695A0E562B32A
添加key：
apt-key adv --recv-keys --keyserver keyserver.ubuntu.com 112695A0E562B32A
杀进程
ps -ef |grep 'lxc exec' |grep -v grep |awk '{print $2}'|xargs kill -9
挂载loop设备
losetup -f
losetup /dev/loop0 Armbian_22.08.2_Orangepipc_jammy_current_5.15.69.img
查看分区偏移：
fdisk -l /dev/loop0
Disk /dev/loop0: 1.3 GiB, 1392508928 bytes, 2719744 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0x60145ae2
Device Boot Start End Sectors Size Id Type
/dev/loop0p1 8192 2719743 2711552 1.3G 83 Linux
计算偏移后挂载
mount -o loop,offset=$((8192*512)) /dev/loop0 /mnt
修改时区
timedatectl set-timezone Asia/Shanghai
git添加多个remote
git remote add origin-github git@github.com:chn-lee-yumi/FileManager.git
git push -u origin main && git push -u origin-github main
ffplay播放rtsp视频流
ffplay -rtsp_transport tcp -i rtsp://username:password@10.0.0.10/Streaming/Channels/301
iperf3测速
iperf3 -s
iperf3 -c x.x.x.x