head -n 55 filename | tail -n 1 Here: head -n 55 filename will display the first 55 lines of the file. tail -n 1 will display the last line of the output from the head command, which will be the 55th line of the file. ...
You can go line by line with theEnterkey or page by page withSpace. Another helpful option is the-numberoption that allows you to specify the number of lines displayed per page. To view 10 lines at a time, you might usemore -10 filename. You can use the+sign to specify which line ...
Display matches by searching filename databases. Takes ownership and file permission into consideration. 搜索文件名数据库显示匹配项,将所有权和文件权限都考虑进去 snice Reset priority for processes. 重置进程的优先级。 sort Sort lines of text files. 对文本文件按行排序 source Run commands from a speci...
Show the last 10 lines of each specified file(s). tailf Follow the growth of a log file. (Deprecated command) talk A two-way screen-oriented communication utility that allows two user to exchange messages simulateneously. talkd A remote user communication server for talk. tar GNU version of...
View Linux Logs Using tail Thetail commandin Linux displays the last ten entries of a file, including log files. It is convenient for monitoring log files in real time or quickly checking recent entries. View/var/log/syslogwith: sudo tail /var/log/syslog ...
映射到的所有虚拟内存区域加入该文件的地址空间结构 address_space 的成员 i_mmap 指向的区域树*/ struct { struct rb_node rb; unsigned long rb_subtree_last; } shared; /* * A file's MAP_PRIVATE vma can be in both i_mmap tree and anon_vma * list, after a COW of one of the file ...
For example, head /etc/passwd shows the first 10 lines of the password file, and tail /etc/passwd shows the last 10 lines. 要快速查看文件或数据流的一部分,可以使用head和tail命令。 例如,head /etc/passwd显示密码文件的前10行,而tail /etc/passwd显示最后10行。 要更改要显示的行数,使用-n选项...
By default, tail command displays the last 10 lines of a file. Head and Tail commands can be combined to display selected lines from a file. You can alsouse tail command to see the changes made to a file in real time. Bonus: Strings command ...
When you’re working with a lot of text or data or even large outputs from other commands, sorting it is a great way to make things manageable. The sort command will sort the lines of a text file alphabetically or numerically.Basic sort syntax:sort [options] [file]...
Add line number for all non-empty-lines in a file $ sed '/./=' thegeekstuff.txt | sed 'N; s/\n/ /' More sed examples:Advanced Sed Substitution Examples 6. awk command examples Remove duplicate lines using awk $ awk '!($0 in array) { array[$0]; print }' temp ...