vim常用操作与重定向
shell输入重定向和输出重定向
1.输出重定向
下面以/etc下的passwd为例，演示不同的重定向方式。（前提以普通用户身份执行，root不会输出错误信息）
find /etc -name passwd                ##此条命令会输出一些正确和错误输出，用于下面演示
find /etc -name passwd > file        ##以覆盖的方式重定向正确输出，'>'代表覆盖原文件的内容,'>>'代表追加输出到原内容后面
find /etc -name passwd 1> file      ##以覆盖的方式重定向正确输出，1代表正确输出，'>'与'>>'同上）
find /etc -name passwd 2> file        ##以覆盖的方式重定向错误输出
find /etc -name passwd &> file      ##以覆盖的方式重定向全部输出
find: ‘/etc/pki/CA/private’: Permission denied(没有权限)
find: ‘/etc/pki/rsyslog’: Permission denied
find: ‘/etc/dhcp’: Permission denied
find: ‘/etc/lvm/archive’: Permission denied
find: ‘/etc/lvm/backup’: Permission denied
find: ‘/etc/lvm/cache’: Permission denied
find: ‘/etc/selinux/targeted/active’: Permission denied
find: ‘/etc/selinux/final’: Permission denied
find: ‘/etc/polkit-1/rules.d’: Permission denied
find: ‘/etc/polkit-1/localauthority’: Permission denied
find: ‘/etc/grub.d’: Permission denied
find: ‘/etc/redhat-access-insights’: Permission denied
find: ‘/etc/libvirt’: Permission denied
find: ‘/etc/ipsec.d’: Permission denied
find: ‘/etc/audisp’: Permission denied
find: ‘/etc/audit’: Permission denied
find: ‘/etc/firewalld’: Permission denied
find: ‘/etc/sudoers.d’: Permission denied
find: ‘/etc/virt-who.d’: Permission denied
/etc/passwd
linux重定向
/etc/pam.d/passwd
find /etc -name passwd 2> file（重定向错误输出）
/etc/passwd
/etc/pam.d/passwd
find: ‘/etc/pki/CA/private’: Permission denied
find: ‘/etc/pki/rsyslog’: Permission denied
find: ‘/etc/audit’: Permission denied
find: ‘/etc/polkit-1/rules.d’: Permission denied
find: ‘/etc/polkit-1/localauthority’: Permission denied
find: ‘/etc/grub.d’: Permission denied
find: ‘/etc/selinux/targeted/modules/active’: Permission denied
find: ‘/etc/lvm/archive’: Permission denied
find: ‘/etc/lvm/backup’: Permission denied
find: ‘/etc/lvm/cache’: Permission denied
find: ‘/etc/dhcp’: Permission denied
find: ‘/etc/firewalld’: Permission denied
find: ‘/etc/audisp’: Permission denied
find: ‘/etc/sudoers.d’: Permission denied
find: ‘/etc/ipsec.d’: Permission denied
find: ‘/etc/libvirt’: Permission denied
find: ‘/etc/cups/ssl’: Permission denied
find /etc -name passwd &> file（重定向全部输出）
find: ‘/etc/pki/CA/private’: Permission denied
find: ‘/etc/pki/rsyslog’: Permission denied
find: ‘/etc/audit’: Permission denied
/etc/passwd
find: ‘/etc/polkit-1/rules.d’: Permission denied
find: ‘/etc/polkit-1/localauthority’: Permission denied
find: ‘/etc/grub.d’: Permission denied
find: ‘/etc/selinux/targeted/modules/active’: Permission denied
/etc/pam.d/passwd
find: ‘/etc/lvm/archive’: Permission denied
find: ‘/etc/lvm/backup’: Permission denied
find: ‘/etc/lvm/cache’: Permission denied
find: ‘/etc/dhcp’: Permission denied
find: ‘/etc/firewalld’: Permission denied
find: ‘/etc/audisp’: Permission denied
find: ‘/etc/sudoers.d’: Permission denied
find: ‘/etc/ipsec.d’: Permission denied
find: ‘/etc/libvirt’: Permission denied
find: ‘/etc/cups/ssl’: Permission denied
find /etc -name passwd >> file（以追加的方式将正确输出保存到file内容后面）
find /etc -name passwd 1>> file（以追加的方式将正确输出保存到file内容后面）
find /etc -name passwd 2>> file（以追加的方式将错误输出保存到file内容后面）
find /etc -name passwd 1> file1 >2 file2 (以覆盖的方式重定向正确输出保存到file1，错误输出保存到file2)
(这里只演示一个，其他同'>')
/etc/passwd
/etc/pam.d/passwd
find: ‘/etc/pki/CA/private’: Permission denied
find: ‘/etc/pki/rsyslog’: Permission denied
find: ‘/etc/dhcp’: Permission denied
find: ‘/etc/lvm/archive’: Permission denied

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