In Linux, the basic unit of file size is the byte. A byte is a unit of digital information that consists of 8 bits. It is the smallest unit of storage on a computer and is used to represent individual characters or symbols in a text file. However, when dealing with larger amounts of...
Sector size (logical/physical): 512 bytes / 4096 bytes I/O size (minimum/optimal): 4096 bytes / 4096 bytes Disk /dev/ram3: 32 MiB, 33554432 bytes, 65536 sectors Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 4096 bytes I/O size (minimum/optimal...
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。 5>查看当前目录下所有目录以及子目录的大小: du -h . “.”代表当前目录下。也可以换成一个明确的路径 -h表示用K、M、G的人性化形式显示 6>查看当前目录下user目录...
Disk/dev/vda:42.9GB # 磁盘的总容量 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 1077M...
在MySQL大表删除场景下,通常步骤是:1、对相关的表ibd文件创建硬链接2、然后执行drop table3、使用第三方的工具对硬链接文件进行删除下面是一个用chatgpt帮写的truncate程序。...off_t new_size = filesize - block_size; if (new_size 大小...,则直接设为0 } // 使用truncate减小文件大小 if (truncate(...
(virtblk) Disk /dev/vdb: 2147GB Sector size (logical/physical): 512B/512B Partition Table: gpt #分区表类型为gpt Disk Flags: Number Start End Size File system Name Flags 对磁盘进行分区 [root@VM_0_89_centos ~]# parted /dev/vdb mkpart primary 2048s 100% Information: You may need to...
yes [string] | head -c [size of file] > [name of file] 1. string是写入文件每一行的字符串 head -c [size of file]是接收指定大小的字符串,单位是字节,后面也可以接K、KB、M、MB、G、GB等单位 如下示例是向文件yesfile写入,每行的内容是:This is my test file, 一直到文件大小达到10G。
[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。
#include<stdio.h>#include<stdlib.h>#include<unistd.h>intg_int=123;static g_static_int2=456;static g_static_int_not_init;intmain(void){intl_int=3;intl_int2=4;static l_static_int=6;static l_static_int2;int*pint=(int*)malloc(sizeof(int));*pint=12;printf("g_int:%d,\tg_static...
I/O size(minimum/optimal):512bytes/512bytesDiskidentifier:0x00000000DeviceBootStartEndBlocksIdSystem/dev/xvda1*125502048000083Linux/dev/xvda22550261149049682Linuxswap/SolarisDisk/dev/xvdb:21.5GB,21474836480bytes255heads,63sectors/track,2610cylindersUnits=cylinders of16065*512=8225280bytesSectorsize(logical/physi...