Linux grep Practice __linux

1, showing the/proc/meminfo in the file with the beginning of a case-insensitive s line;

2. Display the line ending with Nologin in the/etc/passwd;

3, the display/etc/inittab with a # start, and followed by one or more white space characters, and then followed by a line of any character;

4, display/etc/inittab contains: A number: (that is, two colon in the middle of a number) line;

5. Display the line that begins with one or more white-space characters in the/boot/grub/grub.conf file;

6. Display the line in the/etc/inittab file that starts with a number and ends with a number that is the same as the beginning number ;

7, Ifconfig command can display the current host IP address information, etc., if the use of grep and other text processing commands to remove the local IP address, the requirements do not include 127.0.0.1;

8, the display/etc/sysconfig/network-scripts/ifcfg-eth0 file contains a similar IP address dotted decimal number format line;

     

reprint please indicate Xiao Liu