Linux get pagesize

四種shell方式得知pagesize:

/usr/bin/time -f %Z true

LD_SHOW_AUXV=1 /bin/true | grep PAGESZ

grep ^KernelPageSize /proc/self/smaps

python -c ‘import resource; print resource.getpagesize();’

Linux更改網路卡eth編號

將原本網卡eth0更改為eth1

1.#vi /etc/udev/rules.d/70-persistent-net.rules 修改NAME="eth1"

# This file was automatically generated by the /lib/udev/write_net_rules

# program, run by the persistent-net-generator.rules rules file.

#

# You can modify it, as long as you keep each rule on a single

# line, and change only the value of the NAME= key.

# PCI device 0x8086:0x100e (e1000) (custom name provided by external tool)

SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="08:00:27:d6:29:48", ATTR{type}=="1", KERNEL=="eth*", NAME="eth1"

2.#vi /etc/sysconfig/network-scripts/ifcfg-eth0 修改DEVICE=eth1

DEVICE=eth1
HWADDR=08:00:27:d6:29:48
NM_CONTROLLED=yes
ONBOOT=yes
IPADDR=192.168.2.5
BOOTPROTO=none
NETMASK=255.255.255.0
TYPE=Ethernet
GATEWAY=192.168.2.1
DNS1=168.95.1.1
IPV6INIT=no

USERCTL=no

3.Reboot

使用SecureCRT上下傳檔案

利用SecureCRT方便上、下傳檔案時，Linux系統必須先支援rz、sz，CentOS可用執行yum -y install lrzsz即可!