#include <sys/stat.h> #include <stdio.h> float FileSize(const char *fname) { struct stat statbuf; if(stat(fname,&statbuf)==0) { return (float)(statbuf.st_size)/1024/1024; } return -1; } int main() { printf("FileSize=%f\r\n",FileSize("174105.mp4")); } 1. 2. 3. ...
If the M suffix bothers you in some way, you can get rid of it by using –block-size=1M. file size linux If however you want to see the size in MB (10^6 bytes) instead, you should use the command with the option –block-size=MB. To understand the differences between the units ...
When viewing file sizes in the Linux terminal, you may encounter sizes represented in these different units. For example, a file size of 1024 bytes would be displayed as 1 kilobyte (KB), and a file size of 1048576 bytes would be displayed as 1 megabyte (MB). This helps users understand ...
*/ /*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...
Sector size (logical/physical): 512B/512B # 磁盘的每个逻辑/物理扇区容量 Partition Table: gpt # 分区表的格式 (MBR/GPT) Disk Flags: pmbr_boot Number Start End Size File system Name Flags # 下面才是分区数据11049kB 3146kB 2097kB bios_grub23146kB 1077MB 1074MB xfs31077MB33.3GB32.2GB lvm...
3> 以MB为单位显示一个目录树及其每个子树的磁盘使用情况 du -m /home/linux 这在/home/linux目录及其每个子目录中显示了 MB 磁盘块数。 4> 以GB为单位显示一个目录树及其每个子树的磁盘使用情况 du -g /home/linux 这在/home/linux目录及其每个子目录中显示了 GB 磁盘块数。
du [OPTION]… [FILE]… -c, --total 累计大小 -d, --max-depth=N 决定统计每个目录的深度 -B, --block-size=SIZE 决定显示文件大小的单位;比如 ‘-BM’,就是MB,'-BK’就是KB -h, --human-readable 以高可读方式打印 (比如1K 234M 2G) ...
# 创建Swap文件 $ fallocate -l 8G /mnt/swapfile # 修改权限只有根用户可以访问 $ chmod 600 /mnt/swapfile # 配置Swap文件 $ mkswap /mnt/swapfile # 开启Swap $ swapon /mnt/swapfile # 关闭SWAP $ swapoff -a && swapon -a iii.OOM(Out of Memory)杀死进程:内存紧张时系统还会通过 OOM ,直接杀...
[root@node-002 ~]# df -hFilesystem Size Used Avail Use% Mounted on/dev/mapper/vg_node003-lv_root 18G 9.3G 7.1G 57% /tmpfs 491M 0 491M 0% /dev/shm/dev/sda1 477M 42M 411M 10% /boot 增加磁盘空间,例如下图使用VM虚拟机增加的方式。
[root@node01 ~]# stat anaconda-ks.cfg#文件名File: ‘anaconda-ks.cfg’#文件大小#占用的block大小 #块大小 #文件类型Size: 1217 Blocks: 8 IO Block: 4096 regular file#节点号#链接数Device: fd00h/64768d Inode: 67144898 Links: 1#权限#所有者,rootAccess: (0600/-rw---) Uid: ( 0/ root) ...