View Find File command

Command specified number of rows to view the file

tail command (see the end of the file data)

1      # contents of the output end of the file, the default line 10    
2      tail date.log
 . 3      
. 4      # content output last 20 rows 
. 5      tail -20   date.log          
 . 6      
. 7      # outputs the penultimate line 20 to the end of the file contents 
. 8      tail -n - 20   date.log       
 9      
10      
11      # output line 20 to the end of the file contents 
12      tail -n +20   date.log       
 13  
14      # real-time monitoring file content increased, the default 10 lines. 
15      tail -f date.log           

head command (see the beginning of the file)

1      # contents of the output at the beginning of the file, the default line 10 
2      head date.log               
 . 3  
. 4      # SUMMARY beginning of the output line 15 
. 5      head -15   date.log          
 . 6  
. 7      # contents to the beginning of the output on line 15 
. 8      head -n +15 DATE .log        
 . 9  
10      # outputs the reciprocal to the content at the beginning of the first row 15 
. 11      head -n -15 date.log   

 

sed command

. 1   # Sed -n 'start line, the end line p' File Name 
2     
. 3   # content output line 70 to line 75 
. 4   Sed -n '70 , 75P 'date.log           
 . 5  
6   # output line 6, and 260 to 400 rows 
. 7   Sed -n '6P; 260. , 400P;' file name       
 . 8  
. 9   # output line. 5 
10   Sed -n filename 5P   

According to the contents of the field to find the file

grep command

grep " search string " filename