菩提本無樹

objdump -t XXX.elf | grep ".bss"

轉載自 https://www.cyberciti.biz/tips/linux-procfs-file-descriptors.htmlWhile administrating a box, you may wanted to find out what a processes is doing and find out how many file descriptors (fd) are ...

ref https://www.ibm.com/developerworks/cn/linux/l-cn-sysrq/index.html轉載# 立即重新启动计算机 echo "b" > /proc/sysrq-trigger# 立即关闭计算机 echo "o" > /proc/sysrq-trigger# 导出内存分配的信息 （可以用/var/log/messag...

umount /configs/ubidetach -p /dev/mtd12#ubidetach -m 12ubiformat /dev/mtd12 -yubiattach /dev/ubi_ctrl -m 12ubimkvol /dev/ubi1 -s 14MiB -N my_ubi_volmount -t ubifs -o sync /dev/ubi1_0 /configs/

轉載自http://astone-working.blogspot.com/2012/05/linux.html參考資料1. 鳥哥的Linux私房菜--第八章、路由觀念與路由器設定2. 兩張網卡，不能2個gateway嗎?在一些場合，需要讓同一台電腦，用兩張不同的網卡，來做不同的事情，今天要說的就是這個。最常應用的狀況就是：一個網卡用於對內網路，一個網卡用於對外網路。 設定...

轉載 自https://unix.stackexchange.com/questions/333186/how-to-list-the-open-file-descriptors-and-the-files-they-refer-to-in-my-currenYes, this will list all open file descriptors:$ ls -la /proc/$$/f...

轉載自 https://linuxtools-rst.readthedocs.io/zh_CN/latest/tool/strace.html6. strace 跟踪进程中的系统调用strace常用来跟踪进程执行时的系统调用和所接收的信号。 在Linux世界，进程不能直接访问硬件设备，当进程需要访问硬件设备(比如读取磁盘文件，接收网络数据等等)时，必须由用户态模式切换至内核态模式，通过系统...

工具参考篇1. gdb 调试利器 2. ldd 查看程序依赖库 3. lsof 一切皆文件 4. ps 进程查看器 5. pstack 跟踪进程栈 6. strace 跟踪进程中的系统调用 7. ipcs 查询进程间通信状态 8. top linux下的任务管理器 9. free 查询可用内存 10. vmstat 监视内存使用情况 11. iostat 监视I/O子系统...

轉載自 https://unix.stackexchange.com/questions/53542/how-to-determine-the-filesystem-of-an-unmounted-deviceThere are multiple ways to get this information. Most of them require you to parse the output...

轉載自https://askubuntu.com/questions/271028/killall-doesnt-kill-all-and-rarely-kills-what-is-the-command-for-thenQ:I occasionally use the killall command to kill processes. The reason why I say ocas...

轉載自 https://blog.gtwang.org/linux/linux-utility-netcat-examples/https://blog.gtwang.org/linux/linux-netstat-command-examples/https://blog.longwin.com.tw/2012/02/nc-data-send-socket-server-2012/...

轉載自 https://stackoverflow.com/questions/34409726/data-loss-in-embedded-file-system-ubifs-after-shutdown-of-system  Q:Whenever I run my application on UBIFS file system and do a write operation...

udhcpc在更新租約時,會發出下面指令(在租約時間剩餘一半時,會發出)arping -U my_ip -c 3 

ref:https://unix.stackexchange.com/questions/251625/how-to-log-internet-connection-drops        while :do for interface in $(ls /sys/class/net/ | grep -v lo | grep -v p2p0| grep -v wla...

http://www.61ic.com/Article/integraDSPARM/OMAPL1x/201111/39235.html

FILENAME:setreg.c--------------------------------------------------------------------------------  1 /*  2  * Configure GPIO   3  */  4   5 #include   6 #include   7 #include   8 #

FILENAME:drivers/mtd/nand/nand_bbt.c/** * search_bbt - [GENERIC] scan the device for a specific bad block table * @mtd: MTD device structure * @buf: temporary buffer * @td: descriptor for the bad

轉載自http://www.stlinux.com/howto/NAND/BadBlocksSometimes, an attempt to erase a bad block may appear to work. However, this does not mean that the block is usable. Even if subsequent write operatio

ubi介紹http://www.linux-mtd.infradead.org/doc/ubifs.html#L_raw_vs_ftlhttp://www.linux-mtd.infradead.org/doc/ubi.html mtd首頁  有很多資料http://www.linux-mtd.infradead.org/index.html

sata3 devices如何偵測沒插上裝置# cat /proc/scsi/scsi Attached devices: 有插上裝置# cat /proc/scsi/scsi Attached devices:Host: scsi0 Channel: 00 Id: 00 Lun: 00Vendor: ATA Model: INTEL SSD

轉載自http://www.linux-mtd.infradead.org/faq/ubifs.html Why do I have to use ubiformat?The first obvious reason is that ubiformat preserves erase counters, so you do not lose your wear-leveli

https://www.smartmontools.org/wiki/Download

解決方法：在生成UBIFS image時加個-F參數即可 What is the the purpose of the -F (--space-fixup) mkfs.ubifs option? Because of subtle ECC errors that can arise when programming NAND flash (see here), ubiformat is the r...

轉載自 https://coldnew.github.io/f7349436/轉載自 http://blog.youkuaiyun.com/Fred_Wu/article/details/51149987

轉載自 https://www.toradex.com/community/questions/7077/how-to-make-partitions-on-slc-nand-flash-which-use.html ubifs size問題討論https://e2e.ti.com/support/arm/sitara_arm/f/791/t/409157?UBIFS-consumes...

# grep vmalloc /proc/vmallocinfo | awk '{total+=$2}; END {print total}'13602816# lsmod | awk '{total+=$2}; END {print total}'10975894

http://rpm.pbone.net/index.php3/stat/45/idpl/16715764/numer/1/nazwa/mkfs.jffs2 http://blog.youkuaiyun.com/itismine/article/details/4775824