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Full Discussion: How to find the string which is starting with some letters and having numbers from 4th position?
Top Forums UNIX for Beginners Questions & Answers How to find the string which is starting with some letters and having numbers from 4th position? Post 303045384 by looty on Thursday 19th of March 2020 06:33:41 AM
Old 03-19-2020
How to find the string which is starting with some letters and having numbers from 4th position?
How to find the string which is starting with ROS and having numbers from 4th position
For example: I have strings as below
Code:
string1 :ROSE543
string2 :ROS543
string3 :ROS54SQD
string4 :ROSEFLOWER
string5 :FLOWERROSE

here i have to know the string starts with ROS and from 4th position to till the end (n numbers) it having only numbers.
Note: these strings will be passed as a variable and i'm using ksh.

Result should be: ROS543 (because it is starting with ROS and from 4th position to end having only numbers)

Can someone help me to get this result?
Thanks in advance!!!
Last edited by Yoda; 04-03-2020 at 10:37 AM..
 

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LEARN ABOUT MOJAVE

mount_cd9660

MOUNT_CD9660(8) 					    BSD System Manager's Manual 					   MOUNT_CD9660(8)

NAME

     mount_cd9660 -- mount an ISO-9660 filesystem

SYNOPSIS

     mount_cd9660 [-egjr] [-o options] [-s startsector] special node

DESCRIPTION

     The mount_cd9660 command attaches the ISO-9660 filesystem residing on the device special to the global filesystem namespace at the location
     indicated by node.  This command is normally executed by mount(8) at boot time.

     The options are as follows:

     -e      Enable the use of extended attributes.

     -g      Do not strip version numbers on files.  (By default, if there are files with different version numbers on the disk, only the last one
	     will be listed.)  In either case, files may be opened without explicitly stating a version number.

     -j      Do not use any Joliet extensions included in the filesystem.

     -o      Options are specified with a -o flag followed by a comma separated string of options.  See the mount(8) man page for possible options
	     and their meanings.

     -r      Do not use any Rockridge extensions included in the filesystem.

     -s startsector
	     Start the filesystem at startsector.  Normally, if the underlying device is a CD-ROM drive, mount_cd9660 will try to figure out the
	     last track from the CD-ROM containing data, and start the filesystem there.  If the device is not a CD-ROM, or the table of contents
	     cannot be examined, the filesystem will be started at sector 0.  This option can be used to override the behaviour.  Note that
	     startsector is measured in CD-ROM blocks, with 2048 bytes each.

SEE ALSO

     mount(2), unmount(2), fstab(5), mount(8)

BUGS

     POSIX device node mapping is currently not supported.

     Version numbers are not stripped if Rockridge extensions are in use.  In this case, accessing files that don't have Rockridge names without
     version numbers gets the one with the lowest version number and not the one with the highest.

     There is no ECMA support.

HISTORY

     The mount_cd9660 utility first appeared 4.4BSD.

4th Berkeley Distribution					  March 27, 1994					 4th Berkeley Distribution
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