Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: Grep for string
Homework and Emergencies Emergency UNIX and Linux Support Grep for string Post 302506070 by LivinFree on Friday 18th of March 2011 11:49:20 AM
Old 03-18-2011
Assuming this is a Linux kernel, have you tried looking in the /sys filesystem?

It's all driver and device specific, so I can't give you any better answers in this case off-hand, but here's some examples from a system of mine with FC storage:
Code:
$ readlink /sys/block/sda
../devices/pci0000:00/0000:00:02.0/0000:09:00.0/0000:0a:00.0/0000:0b:00.0/host2/rport-2:0-0/target2:0:0/2:0:0:1/block/sda
$ readlink /sys/block/sda/device
../../../2:0:0:1

That is *much* easier to parse...
 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

| help | unix | grep - Can I use grep to return a string with exactly n matches?

Hello, I looking to use grep to return a string with exactly n matches. I'm building off this: ls -aLl /bin | grep '^.\{9\}x' | tr -s ' ' -rwxr-xr-x 1 root root 632816 Nov 25 2008 vi -rwxr-xr-x 1 root root 632816 Nov 25 2008 view -rwxr-xr-x 1 root root 16008 May 25 2008... (7 Replies)
Discussion started by: MykC
7 Replies

2. Shell Programming and Scripting

Grep for a string and then grep using a string from that result

Hello, Thanks in advance for the query. There is a log file abcd.log which has multible line like this. "hello1" , "hello2", "hello3" , "hello4" , "hello5" I want to grep for the lines which has "hello4" & "hello5" and use "hello2" to grep the same log file again. All these should... (8 Replies)
Discussion started by: kzenthil
8 Replies

3. Shell Programming and Scripting

grep on string and printing line after until another string has been found

Hello Everyone, I just started scripting this week. I have no background in programming or scripting. I'm working on a script to grep for a variable in a log file Heres what the log file looks like. The x's are all random clutter xxxxxxxxxxxxxxxxxxxxx START: xxxxxxxxxxxx... (7 Replies)
Discussion started by: rxc23816
7 Replies

4. Shell Programming and Scripting

Grep a string and write a value to next line of found string

Hi, I have two variables x and y. i need to find a particular string in a file, a workflow name and then insert the values of x and y into the next lines of the workflow name. basically it is like as below wf_xxxxxx $$a= $$b= $$c= figo $$d=bentley i need to grep the 'wf_xxxx' and then... (6 Replies)
Discussion started by: angel12345
6 Replies

5. Shell Programming and Scripting

Grep a string from input file and delete next three lines including the line contains string in xml

Hi, 1_strings file contains $ cat 1_strings /home/$USER/Src /home/Valid /home/Review$ cat myxml <projected value="some string" path="/home/$USER/Src"> <input 1/> <estimate value/> <somestring/> </projected> <few more lines > <projected value="some string" path="/home/$USER/check">... (4 Replies)
Discussion started by: greet_sed
4 Replies

6. Shell Programming and Scripting

grep exact string from files and write to filename when string present in file

I am attempting to grep an exact string from a series of files within a directory and append that output to the filename when it is present in the file. I've been after this all day with no luck. Thanks for your help in advance :wall:. (4 Replies)
Discussion started by: JC_1
4 Replies

7. Shell Programming and Scripting

Grep string in files and list file names that contain the string

Hi, I have a list of zipped files. I want to grep for a string in all files and get a list of file names that contain the string. But without unzipping them before that, more like using something like gzcat. My OS is: SunOS test 5.10 Generic_142900-13 sun4u sparc SUNW,SPARC-Enterprise (8 Replies)
Discussion started by: apenkov
8 Replies

8. Shell Programming and Scripting

Grep exact string from main string

Hi , am getting output file, it sontains the below values. ./hawk_DOM1_FIRST_ENV ./hawk_DOM2_SECOND_ENV ./hawk_DOM3_THIRD_ENV Now I need to grep the word "DOM1_FIRST_ENV","DOM2_SECOND_ENV" like that. I tired with cut -d "_". Its not working with any deleimiter. Can you please help to... (3 Replies)
Discussion started by: ckchelladurai
3 Replies

9. Shell Programming and Scripting

Grep a string and count following lines starting with another string

I have a large dataset with following structure; C 0001 Carbon D SAR001 methane D SAR002 ethane D SAR003 propane D SAR004 butane D SAR005 pentane C 0002 Hydrogen C 0003 Nitrogen C 0004 Oxygen D SAR011 ozone D SAR012 super oxide C 0005 Sulphur D SAR013... (3 Replies)
Discussion started by: Syeda Sumayya
3 Replies

10. UNIX for Beginners Questions & Answers

Grep a sub-string from a string stored in a variable.

For example: I am grepping "Hello" from a file and there are 10 matches. So all ten lines with match will get stored into a variable($match). Now I want to ignore those lines which have "Hi" present in that. Currently I tried this: match = grep "Hello" file | grep -v "Hi" file But that's not... (2 Replies)
Discussion started by: pavan
2 Replies

LEARN ABOUT DEBIAN

sraw

SRAW(8) 						      System Manager's Manual							   SRAW(8)

NAME

       sraw - benchmark raw scsi I/O performance under linux

SYNOPSIS

       sraw [ -fiv6 ] scsi-device [ bstart [ bstep ] ]

DESCRIPTION

       This  program  basically  reads the specified scsi device and measures the throughput.  Note that the filesystem *AND* the buffer cache are
       bypassed by this code, this program was designed to benchmark the naked scsi drivers by themselves without the  need  to  account  for  the
       overhead of any other portion of the kernel. It also could be used to benchmark disk read throughput.

       This  program  does  a  series of reads of the disk, of consecutive areas on the disk.  The device is first queried to determine the sector
       size for the device, and then the series of reads is begun.  About 5.0 Mb is read from the device, and then  the  performance  numbers  are
       reported.  Note that since the buffer cache is completely bypassed, there is no need to be concerned about cache hits or anything.

       Output of sraw is a set of lines, 4 numbers per line: blocksize, elapsed time, nblocks and throughput (in bytes per second).

       scsi-device is either a block device (e.g. /dev/sda, /dev/scd0) or a generic SCSI device (e.g. /dev/sg0).

OPTIONS

       -f     set FUA (Force Unit Access) bit during read. Data is then read from media instead of internal drive cache.

       -i     use legacy ioctl instead of new SG I/O layer (will not work on 2.6 kernel and block devices).

       -v     more verbose output.

       -6     use 6-bytes instead of 10-bytes read command. In this case, only the first GB of data could be read from media.

       bstart starting block to check different zones on ZBR discs

       bstep  factor for sequential stepping, default 1.  Use 0 for reading always the same blocks (from cache)

ERRORS

       sraw  could  issue input/output errors when reading too many blocks at the same time from a block device like /dev/sda. To get rid of them,
       use /dev/sgN instead.

AUTHOR

       sraw was first written by Eric Youngdale.  Extensions (-v, -f, -6, SG IO, man page) were written by Eric Delaunay.

SEE ALSO

       sg_dd(8) from sg3-utils package.

AVAILABILITY

       sraw is available at
       ftp://tsx-11.mit.edu/pub/linux/ALPHA/scsi/

								     Nov 1993								   SRAW(8)
All times are GMT -4. The time now is 09:15 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy