*/ /*为了支持查询一个文件区间被映射到哪些虚拟内存区域, 把一个文件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 t...
4.touch (touch 接触 ; change file timestamps 改变文件的时间戳) 【命令作用】创建文件 【命令语法】tuoch [选项](参数) 【常用选项】 【参数说明】创建文件的文件名 【命令示例】 创建一个叫file文件 touch file 5.echo (echo 回波;display a line of text 显示一行文本 【命令作用】打印变量的值 【命...
more(file perusal filter one screen at a time) less(file perusal filter one line at a time) head(output the first part of files) -n 显示前n行 -v 显示文件名 tail(output the last part of files) -n 显示倒数n行 -f 监听文件新增信息(会随着文件更改而刷新) ln(make links between file) ...
With no FILE, or when FILE is -, read standard input. Mandatory arguments to long options are mandatory for short options too. -c, --bytes=[-]NUM print the first NUM bytes of each file; with the leading '-', print all but the last NUM bytes of each file -n, --lines=[-]NUM ...
line of input is30not read withint TIMEOUT seconds. The value of the TMOUT31variable is the default timeout. TIMEOUT may be a32fractional number. If TIMEOUT is0, read returns success only33ifinput is available on the specifiedfiledescriptor. The34exit status is greater than128ifthe time...
No such file or directory(没有这个文件或目录) This is the number one error. You tried to access a file that doesn’t exist. Because the Unix file I/O system doesn’t discriminate between files and directories, this error message occurs everywhere. You get it when you try to read a fil...
--partitionsfile <file> filename to read diskstats (Linux 2.4) from. (/proc/partitions) Output: -o, --output <method> output method, one of: plain, curses, curses2, csv, html -u, --unit <value> unit to show. one of bytes, bits, packets, errors ...
Used to delete MS-DOS file. mdeltree recursively deletes MS-DOS directory and its contents. 用于删除MS-DOS文件。mdeltree递归删除MS-DOS目录及其内容。 mdir Used to display an MS-DOS directory. 用于显示MS-DOS目录。 mdu Used to display the amount of space occupied by an MS-DOS directory. ...
However, I found that other read-only, compressed file systems don't do a very good job at making use of this redundancy. See here for a comparison with other compressed file systems. DwarFS also doesn't compromise on speed and for my use cases I've found it to be on par with or ...
Up Arroworkto move up one line. SpacebarorPage Downto move down one page. Page Uporbto move up one page. Gto go to the end of the file. gto go to the beginning of the file. Read Linux Log Files Using more Themorecommand in Linux is used to view the contents of log files one...