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linux常用命令 之 文件处理（二）
命令名称：touch
所在路径：/bin.touch
执行权限：所有用户
oot@localhost tmp]# touch list.txt [root@localhost tmp]# touch /root/list.txt [root@localhost tmp]# touch program files [root@localhost tmp]# ll 总计 52 drwxr-xr-x 2 root root 4096 12-01 13:05 china -rw-r--r-- 1 root root 0 12-01 13:43 files drwx------ 3 root root 4096 11-30 19:15 gconfd-root -rw------- 1 root root 630 12-01 13:08 grub.conf drwx------ 2 root root 4096 11-30 19:15 keyring-n4KWUI -rw-r--r-- 1 root root 0 12-01 13:36 list.txt srwxr-xr-x 1 root root 0 11-30 19:15 mapping-root drwx------ 2 root root 4096 12-01 12:10 orbit-root -rw-r--r-- 1 root root 0 12-01 13:43 program -rw-r--r-- 1 root root 5 12-01 13:00 scim-bridge-0.3.0.lockfile-0@localhost:0.0 srwxr-xr-x 1 root root 0 11-30 20:10 scim-bridge-0.3.0.socket-0@localhost:0.0 srw------- 1 root root 0 11-30 19:16 scim-helper-manager-socket-root srw------- 1 root root 0 11-30 19:16 scim-panel-socket:0-root srw------- 1 root root 0 11-30 19:15 scim-socket-frontend-root drwx------ 2 root root 4096 11-30 19:15 ssh-mibWGs4219 drwx------ 2 root root 4096 11-30 19:15 virtual-root.tyft1a drwxr-xr-x 2 root root 4096 11-30 21:48 vmware-config0 drwxrwxrwt 4 root root 4096 11-30 18:13 VMwareDnD drwxr-xr-x 2 root root 4096 11-30 19:13 vmware-root drwx------ 2 root root 4096 11-30 19:15 vmware-root-2083992326 [root@localhost tmp]# touch " profile file" [root@localhost tmp]# ls china files gconfd-root grub.conf keyring-n4KWUI list.txt mapping-root orbit-root profile file program scim-bridge-0.3.0.lockfile-0@localhost:0.0 scim-bridge-0.3.0.socket-0@localhost:0.0 scim-helper-manager-socket-root scim-panel-socket:0-root scim-socket-frontend-root ssh-mibWGs4219 virtual-root.tyft1a vmware-config0 VMwareDnD vmware-root vmware-root-2083992326 [root@localhost tmp]#
命令所在路径：/bin/cat
执行权限：所有用户
[root@localhost tmp]# cat /etc/issue
Red Hat Enterprise Linux Server release 5.4 (Tikanga)
Kernel \r on an \m
[root@localhost tmp]# cat -n /etc/issue
1 Red Hat Enterprise Linux Server release 5.4 (Tikanga)
2 Kernel \r on an \m
3
[root@localhost tmp]#
命令名称：tac
所在路径：/usr/bin/tac
[root@localhost tmp]# cat /etc/issue
Red Hat Enterprise Linux Server release 5.4 (Tikanga)
Kernel \r on an \m
[root@localhost tmp]# cat -n /etc/issue
1 Red Hat Enterprise Linux Server release 5.4 (Tikanga)
2 Kernel \r on an \m
3
[root@localhost tmp]#
[root@localhost tmp]# tac /etc/issue
Kernel \r on an \m
Red Hat Enterprise Linux Server release 5.4 (Tikanga)
[root@localhost tmp]# tac -n /etc/issue
tac：无效选项 -- n
请尝试执行“tac --help”来获取更多信息。命令名称：more 只能向下翻页
所在路径：/bin/more
空格 f q
命令名称：less
page UP （向上一页）
进行收索
[root@localhost tmp]# less /etc/services
命令名称：head 、tail
[root@localhost tmp]# head /etc/services # /etc/services: # $Id: services,v 1.42 2006/02/23 13:09:23 pknirsch Exp $ # # Network services, Internet style # # Note that it is presently the policy of IANA to assign a single well-known # port number for both TCP and UDP; hence, most entries here have two entries # even if the protocol doesn't support UDP operations. # Updated from RFC 1700, ``Assigned Numbers'' (October 1994). Not all ports # are included, only the more common ones. [root@localhost tmp]# head -1 /etc/services # /etc/services: [root@localhost tmp]#
[root@localhost tmp]# tail -f /etc/services #动态变化 nimspooler 48001/udp # Nimbus Spooler nimhub 48002/tcp # Nimbus Hub nimhub 48002/udp # Nimbus Hub nimgtw 48003/tcp # Nimbus Gateway nimgtw 48003/udp # Nimbus Gateway com-bardac-dw 48556/tcp # com-bardac-dw com-bardac-dw 48556/udp # com-bardac-dw iqobject 48619/tcp # iqobject iqobject 48619/udp # iqobject
命令名称：ln
硬链接可以进行同步更新，但不能夸分区，不能针对目录建立硬链接
[root@localhost tmp]# ln -s /etc/issue /tmp/issue.soft [root@localhost tmp]# ln /etc/issue /tmp/issue.hard [root@localhost tmp]# ln -l /etc/issue ln：无效选项 -- l 请尝试执行“ln --help”来获取更多信息。 [root@localhost tmp]# ls -l /etc/issue -rw-r--r-- 2 root root 74 2009-08-04 /etc/issue [root@localhost tmp]# ls -l /tmp/issue* -rw-r--r-- 2 root root 74 2009-08-04 /tmp/issue.hard lrwxrwxrwx 1 root root 10 12-01 14:36 /tmp/issue.soft -> /etc/issue [root@localhost tmp]# [root@localhost tmp]# ls -i /etc/issue /tmp/issue.soft /tmp/issue.hard 1573051 /etc/issue 1573051 /tmp/issue.hard 917638 /tmp/issue.soft [root@localhost tmp]#
linux常用命令 之 文件处理（二）
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