10-30-2009
script to store comma separated values in different variables
Hello friends, I need ur help.I want to write a script. The script should read contents from a file namely xyz. e.g xyz abcd,1234,efgh,7854378 dhnsa,dsakjkdl,43432,ZXDsa the script should store comma (,) seperated values in different variables. Once pointer will reach end of line (\n), it should again store new values of next line in same variables. Advance thanks for ur help !
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kvar(8) System Manager's Manual kvar(8)
Name
kvar - modify RISC kernel variables in memory or on disk
Syntax
/usr/etc/kvar -r(b|w|l) [options] vmunix
/usr/etc/kvar -w(b|w|l) [options] vmunix
Description
The command allows you to read or write RISC kernel variables, either in the on-disk image of or the active in-memory image. The -r form
of the command does variable reads; the -w form does variable writes. The variable length qualifiers are: b (1 byte), w (word, or 2
bytes), and l (longword, or 4 bytes).
Variable contents are displayed in hexadecimal format.
Options
-a address Specifies the address of the kernel variable. Either the -a or -s option must be specified. The address is specified as
either a positive decimal or hexadecimal constant.
-k Instructs to use the in-memory image of The default is to use the on-disk copy.
-l Searches for a local symbol. The default is a global symbol search.
-o offset Adds an offset to the address (or address of the symbol name). The offset value is specified as either a positive decimal or
hexadecimal constant.
-s name Specifies the name of the kernel variable.
-v value Specifies the new value to be assigned by the -w form of The -v option is ignored if the -r form of is being used. The value
is specified as either a positive decimal or hexadecimal constant.
Restrictions
You must have appropriate file access permissions for (and for with the -k option).
The command is available only on RISC systems. For VAX systems, use to modify kernel variables.
Examples
This example reads the variable `udpcksum' from the running kernel image:
% kvar -k -rl -s udpcksum /vmunix
This example sets the `xyz' variable to zero in the running kernel image:
% kvar -k -wl -s xyz -v 0 /vmunix
This example sets the variable `xyz' to -1 in the on-disk image of making this value persistent across reboots:
% kvar -wl -s xyz -v 0xffffffff /vmunix
This example sets to zero 1 byte at offset 2 from address 0x80161a98 in the running kernel image:
% kvar -k -wb -o 2 -a 0x80161a98 /vmunix
Files
See Also
adb(1), dbx(1)
RISC kvar(8)