Sponsored Content
Full Discussion: Understanding 'du' command
Operating Systems Solaris Understanding 'du' command Post 302453475 by jlliagre on Wednesday 15th of September 2010 12:11:27 PM
Old 09-15-2010
Quote:
Originally Posted by presul
Why is the difference between output of 'du' and 'ls' cmd's ?
Because they measure different things.
Quote:
What is the value 1251 and 6 from ls cmd in fifth column ? (I guess Bytes)
1251 is indeed bytes but 6 represent a number of entries (links) and not bytes as "scripts" is a directory.
Quote:
If those values represent Bytes, why is the difference between 'ls -la' and 'du -sh *' outputs ?
"du" reports the size the file takes on the disk. This size depends on the file system used. "ls" reports the file size. They are somewhat related but different metrics. You certainly can have a file size larger that the space it takes on disk.
 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Need help understanding script command

We use a UNIX-based system (Lawson) at work and I was given this command to request a data extract from the db admin. The only thing I really understand is the last line as it appears to be joining the files created from the first three lines into one. Is there anyone who can help me breakdown the... (4 Replies)
Discussion started by: KGee
4 Replies

2. Shell Programming and Scripting

understanding the sed command

Guys, I am trying to understand the sed command here. adx001 $ a=/clocal/dctrdata/user/dctrdat1/trdroot/recouncil adx001 $ b=`echo $a | sed 's/\//\\\\\//g'` adx001 $ echo $b \/clocal\/dctrdata\/user\/dctrdat1\/trdroot\/recouncil The sed command i took it from the script. Please... (3 Replies)
Discussion started by: mac4rfree
3 Replies

3. Shell Programming and Scripting

Help Needed in understanding this command

Hi All, I search the forum for my query, Glad that got solution to it. But i really want to understand how does this command work. sed -e ':a' -e 's/\("*\),\(*"\)/\1~\2/;ta' Basically it is replacing all the comma(,) characters in between quotes with a tilde. Specially what does ':a' ,... (2 Replies)
Discussion started by: DSDexter
2 Replies

4. Shell Programming and Scripting

understanding the kill command

Hi Guys, I like to know if i have a process which triggers 10 different child processes. How to identify out of the 11 processes running which is the parent process and what are the child process? And if i kill the parent process will the child process be killed.. if not is there a way to... (2 Replies)
Discussion started by: mac4rfree
2 Replies

5. Shell Programming and Scripting

understanding mv command

hi i was moving a file from one directory to another with the following cmmand mv /home/hsghh/dfd/parent/file.txt . while doing so i i accidently mv /home/hsghh/dfd/dfd . although i gave ctrl c and terminate the move command some of the file are missing in the parent directory and... (1 Reply)
Discussion started by: saravanan71184
1 Replies

6. UNIX for Dummies Questions & Answers

Understanding the output command

Could you please explain me whats happening in the below code, appreciate your help, Thank you. /product/apps/informatica/v7/pc/ExtProc/NewDAC/dacRecBuilder.sh /product/apps/informatica/v7/pc/TgtFiles/NEW_DAC/DAC_Pos_TradeInv_Records.out ... (5 Replies)
Discussion started by: Ariean
5 Replies

7. Shell Programming and Scripting

Understanding 'find' command

I want to understand what does this command do:confused::confused: find . \( -type f -o -type 1 \) Plz someone explain me ! Thanks much in advance!! (2 Replies)
Discussion started by: sears
2 Replies

8. UNIX for Dummies Questions & Answers

Understanding nm command output

After running nm command on any object file from out put can we get to know that wheather a symbol is a call to a function or definition of function ? I am searching a class and function definitions inside many .so files. I have 3 files which contain the symbol but I don't know wheather they... (2 Replies)
Discussion started by: yatrik007
2 Replies

9. UNIX for Dummies Questions & Answers

understanding sed command

Hi Friends, I need a small help in understanding the below sed command. $ cat t4.txt 1 root 1 58 0 888K 368K sleep 4:06 0.00% init 1 root 1 58 0 888K 368K sleep 4:06 0.00% init last $ sed 's/*$//' t4.txt 1 root 1 58 0 888K ... (3 Replies)
Discussion started by: forroughuse
3 Replies

10. Shell Programming and Scripting

awk : Need Help in Understanding a command

Hello I am working on a Change request and Stuck at a point. The below awk command is used in the function. float_test ( ) { echo | awk 'END { exit ( !( '"$1"')); }' } I understand that awk 'END' is used to add one line at the end and exit is used to end the script with an error... (4 Replies)
Discussion started by: rahul2662
4 Replies
extendfs_vxfs(1M)														 extendfs_vxfs(1M)

NAME
extendfs_vxfs: extendfs - extend VxFS file system size SYNOPSIS
size] special DESCRIPTION
If the VxFS file system image created on special does not use all of the available space, increases the capacity of a VxFS file system by updating the file system structure to include the extra space. special specifies the device special file of either a logical volume or a disk partition. If special refers to a mounted file system, you must unmount special before running (see mount(1M)). The Version 5 disk layout supports file systems up to 32 terabytes. The size to which a Version 5 disk layout file system can be increased depends on the file system block size: o 1024 bytes 4,294,967,039 sectors (4 TB) o 2048 bytes 8,589,934,078 sectors (8 TB) o 4096 bytes 17,179,868,156 sectors (16 TB) o 8192 bytes 34,359,736,312 sectors (32 TB) The Version 6 disk layout supports file systems up to 256 terabytes. The size to which a Version 6 disk layout file system can be increased depends on the file system block size: o 1024 bytes 34,359,736,312 sectors (32 TB) o 2048 bytes 68,719,472,624 sectors (64 TB) o 4096 bytes 137,438,945,248 sectors (128 TB) o 8192 bytes 274,877,890,496 sectors (256 TB) The maximum file system size supported is 2 terabytes. For a file system's size to be increased to 32 terabytes or greater, the file sys- tem must be on a 64-bit kernel operating system and must reside on a VERITAS Volume Manager volume. If the file system resides on a volume set, will fail. Use the fsvoladm(1M) command to extend a multi-volume file system. When the file system size is grown with the extendfs command, the intent log size is not automatically increased. Options recognizes the following options: Specify the VxFS file system type. Query special to determine the size. The file system is not extended. Specify the number of blocks to add to the file system. If size is omitted, the maximum possible size is used. Specify verbose mode, which displays the resulting size of file system along with output of the newly sized file system. Without there is no output. Operands recognizes the following operand: special The device special file of either a logical volume or a disk partition. If special refers to a mounted file system, you must unmount special before running (see mount(1M)). EXAMPLES
This example shows how to increase the capacity of a file system created on a logical volume. SEE ALSO
extendfs(1M), lvextend(1M), mkfs(1M), mount(1M), umount(1M), fs_vxfs(4). extendfs_vxfs(1M)
All times are GMT -4. The time now is 10:03 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy