@linux文件管理

[root@string /]# mkdir dir
[root@string /]# ls -l
total 20
drwxr-xr-x    2 root root    6 Mar  5 12:18 dir

[root@string ~]# mkdir -p abc/bcd/cde/def
[root@string ~]# tree abc/

[root@string ~]# mkdir -pv one/two/treee/four

# 创建单个文件
[root@string test]# touch 1.txt
[root@string test]# ls
1.txt

# 创建多个文件
[root@string test]# touch 3.txt 2.txt
[root@string test]# ls
1.txt  2.txt  3.txt

# 匹配创建多个文件
[root@string test]# touch {a..z}.txt
[root@string test]# ls
1.txt  3.txt  b.txt  d.txt  f.txt  h.txt  j.txt  l.txt  n.txt  p.txt  r.txt  t.txt  v.txt  x.txt  z.txt
2.txt  a.txt  c.txt  e.txt  g.txt  i.txt  k.txt  m.txt  o.txt  q.txt  s.txt  u.txt  w.txt  y.txt
[root@string ~]# touch {abc,bcd,fgh}.txt
[root@string ~]# ls

[root@string ~]# ls
abc  abc.txt  {a...c}.txt  bcd.txt  dir  fgh.txt  one  test

[root@string ~]# ls -a
.   abc      {a...c}.txt    .bash_logout   .bashrc  .cshrc  fgh.txt   one   .ssh     test      系统优化.md
..  abc.txt  .bash_history  .bash_profile  bcd.txt  dir

[root@string ~]# ls -l
total 8
drwxr-xr-x  3 root root   17 Mar  5 12:21 abc
-rw-r--r--  1 root root    0 Mar  5 12:35 abc.txt
-rw-r--r--  1 root root    0 Mar  5 12:35 {a...c}.txt
-rw-r--r--  1 root root    0 Mar  5 12:35 bcd.txt

# 说明
- : 普通文件
d : 目录文件
l : 链接文件
s : 套接字文件
c : 设备文件
b : 设备文件
p :

[root@string ~]# ls -il

[root@string ~]# ls -lh
total 8.0K
drwxr-xr-x  2 root root 4.0K Mar  5 12:34 test

[root@string ~]# ls -d /etc/sysconfig/
/etc/sysconfig/
[root@string ~]#

[root@string ~]# ls -F /root/
abc/  abc.txt  {a...c}.txt  bcd.txt  dir/  fgh.txt  one/  test/  系统优化.md
[root@string ~]# ls /root/
abc  abc.txt  {a...c}.txt  bcd.txt  dir  fgh.txt  one  test  系统优化.md
[root@string ~]# /bin/ls -F /root/
abc/  abc.txt  {a...c}.txt  bcd.txt  dir/  fgh.txt  one/  test/  系统优化.md
[root@string ~]#

[root@string ~]# cat /etc/sysconfig/network-scripts/ifcfg-eth0 
TYPE=Ethernet
PROXY_METHOD=none
BROWSER_ONLY=no
BOOTPROTO=none
DEFROUTE=yes

[root@string ~]# head /etc/sysconfig/network-scripts/ifcfg-eth0 
TYPE=Ethernet
PROXY_METHOD=none
BROWSER_ONLY=no
BOOTPROTO=none
DEFROUTE=yes
IPV4_FAILURE_FATAL=no
IPV6INIT=yes
IPV6_AUTOCONF=yes
IPV6_DEFROUTE=yes
IPV6_FAILURE_FATAL=no

[root@string ~]# head -n 2  /etc/sysconfig/network-scripts/ifcfg-eth0 
TYPE=Ethernet
PROXY_METHOD=none

[root@string ~]# head -c 100 /etc/sysconfig/network-scripts/ifcfg-eth0 
TYPE=Ethernet
PROXY_METHOD=none
BROWSER_ONLY=no
BOOTPROTO=none
DEFROUTE=yes
IPV4_FAILURE_FATAL=no
IP

[root@string ~]# tail /etc/sysconfig/network-scripts/ifcfg-eth0 
IPV6_ADDR_GEN_MODE=stable-privacy
NAME=eth0
UUID=40fd9db3-b150-435d-a610-32285fc596d2
DEVICE=eth0
ONBOOT=yes
IPADDR=192.168.15.100
PREFIX=24
GATEWAY=192.168.15.2
DNS1=114.114.114.114
IPV6_PRIVACY=no

[root@string ~]# tail -n 2 /etc/sysconfig/network-scripts/ifcfg-eth0
DNS1=114.114.114.114
IPV6_PRIVACY=no

[root@string ~]# tail -c 50 /etc/sysconfig/network-scripts/ifcfg-eth0
192.168.15.2
DNS1=114.114.114.114
IPV6_PRIVACY=no

[root@string ~]# echo "string1" >> abc.txt