In a file, How do I replace a set number of characters in each line?
For example.... substitute the first 54 characters of each line with mv?
Thanks!
Lisa (8 Replies)
Hi
I have searched for a way to replace odd characters in a FOLDER NAME. All search-and-replace issues I have seen, only involves how to make search-and-replace on a FILE och with TEXT INSIDE a FILE. My problem is with the FOLDER NAME.
My case is this:
I have a couple of persons that every... (5 Replies)
Hi,
I try to get tr to replace multibytes characters by ascii equivalent. For example
"Je vais à l'école" ---> 'Je vais a l'ecole"
But my version of tr (5.97) doesn't seem to support multibyte sets.
$ locale charmap; echo "Je vais à l'école" | tr éà ea
UTF-8
Je vais aa l'aacole
I try to... (2 Replies)
Hi,
I have a file in which i want to replace the charaters from position 3-5 with a particular string for the first line.
For ex
The file contains
abcdefghij
jkdsflsfkdk
908090900
i want to replace the characters 3-5 for the first line as 678
so, the file should look like
... (7 Replies)
I've got a file (numbers.txt) filled with numbers and I want to replace each one of those numbers with a new random number between 0 and 9. This is my script so far:
#!/bin/bash
rand=$(($RANDOM % 9))
sed -i s//$rand/g numbers.txtThe problem that I have is that it replaces each number with just... (2 Replies)
Hi,
I have a file which includes some French Characters and I want to change them to other characters like
À to À
 to Â
É to É
.....
.....
and so on.
I am tyring to use tr command like
tr ÀÂÉ ÀÂÉ < input file
But it does not work. Only... (2 Replies)
Hi ,
I want to replace the special characters in the file.
For eg: cat abc
1234/4455/acb
234/k/lll/
234`fs`fd
I want to replace / and ` with the letter a and the output should like below. How to achieve this.
1234a4455aacb
234akallla
234afsafd (2 Replies)
I have a line ending with special character and 0
The special character is the field separator for this line
in VI mode the file will look like below, but while cat the special character wont display
i know the hexa code for the special character ^_ is \x1f and ascii code is
\0037,
... (0 Replies)
i need to replace the any special characters with escape characters like below.
test!=123-> test\!\=123
!@#$%^&*()-= to be replaced by
\!\@\#\$\%\^\&\*\(\)\-\= (8 Replies)
This seems like it should be an easy problem, but for some reason I am struggling with the solution.
I simply want to replace all characters after the first 3 characters with another character, preferably with sed.
Thanks in advance.
Like this, but producing the proper number of *'s:
sed... (30 Replies)
Discussion started by: leolson
30 Replies
LEARN ABOUT ULTRIX
kvar
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
FilesSee Alsoadb(1), dbx(1)
RISC kvar(8)