trap
mktemp
install
expect #需要安装
declare -a
declare -A
name=(zhang wang li)
echo ${name[*]}
declare -A m=([a1]=wang [a2]=li)
echo ${#xixi[*]}
echo ${!shuguo[*]}
~]# for n in ${!shuguo[*]};do echo hello ${shuguo[$n]}; done
~]# mknod /data/ling c 1 5
~]# ll /data/ling
crw-r--r-- 1 root root 1, 5 Dec 27 17:10 /data/ling
~]# hexdump -C /dev/zero
fdisk -u=cylinder -l /dev/sda
lsblk
lsblk -d
lsblk -d -o name,size
gdisk
parted
parted /dev/sdb -l
parted /dev/sdb mkpart primary 1M 2000M
mkfs.xfs /dev/sdb1
mkswap
mkfs.ext4
mkfs.vfat
~]#ls /lib/modules/`uname -r`/kernel/fs
tune2fs #ext系列文件系统工具
xfs_info #xfs文件系统工具
e2fsck #ext系列文件系统修复工具
xfs_repair #xfs文件系统修复工具
mount
umount
mount -a
mount -r
findmnt /dev/sda1
fuser -v /mnt
fuser -km /mnt
cat /proc/mounts
swapon -a
swapon -s
cat /proc/swaps
~]# systemctl --type swap
swapoff -a
~]# dd if=/dev/sda of=/tmp/test.img bs=1M count=1000
~]# dd if=f1.txt of=f2.txt bs=1 count=2 skip=4 seek=2
