I built a 12 million record file and made a mistake, one field is 1 character too long.
The record is 40 bytes and ends always in 999. I am trying to delete the 37 character in each record. Is this possible without doing a cut and paste. (1 Reply)
hi all,
i want to delete a space character in word on unix script with command sed like :
#dia n
result:
#dian
is there anyone will help me ?
regards,
cahyo (1 Reply)
I have a script that produces an output containing '/.ssh'.
I am trying to find a way of parsing only this data from a single line, without removing any other special characters contained within the output as a result of the parse.
Any help would be appreciated (6 Replies)
Hi all
I am trying to get my head around doing the following....
I have an input field that could contain either a number a blank field or a whitespace field.
What I want to do is delete a 0 (zero) if it's on its own or leading the number.
So:-
\t0 delete the zero
0 delete the... (8 Replies)
Hello. I'm trying to delete one character in determinate position.
Example:
qwEtsdf123Ecv34
<delete character in positión 3>
Result:
qwtsdf123Ecv34
Plase, help me.
Thanks (4 Replies)
Hi Gurus,
I am working with a korn shell script. I should replace in a very great file the character ";" with a space.
Example:
2750;~
2734;~
2778;~
2751;~
2751;~
2752;~
what the fastest method is? Sed? Awk?
Speed is dead main point, Seen the dimensions of the files
Thanks (6 Replies)
Sample file:
This is line one,
this is another line,
this is the PRIMARY INDEX line
l ;
This is another line
The command should find the line with “PRIMARY INDEX” and remove the last character from the line preceding it (in this case , comma) and remove the first character from the line... (5 Replies)
Hi there,
A total sed noob here. Is there a way using sed to delete everything before a character AND after another character on each line in a file? The deletion should also delete the indicating characters(here: an opening and a closing parenthesis).
The original file would look like... (3 Replies)
Below i am trying to remove "/" and "r" from the output, so i need output as:
hdiskpower3
hdisk0
hdisk1
#inq | grep 5773 | awk '{print $1}' | sed 's/dev//g' | awk -F"/" '{$1=$1}1'
.....................................................//rhdiskpower0
//rhdiskpower1
//rhdiskpower2... (3 Replies)
A portion of my input is as follows:
1087 IKON01,49 A WA- -1 . -1 . 0 W WA- -1 . -1 . 0 . -1 . -1 -1 -1 -1 -1 -1 W
1088 IKON01,49 A J.@QU80MW. 2... (2 Replies)
Discussion started by: jvoot
2 Replies
LEARN ABOUT PLAN9
join
JOIN(1) General Commands Manual JOIN(1)NAME
join - relational database operator
SYNOPSIS
join [ options ] file1 file2
DESCRIPTION
Join forms, on the standard output, a join of the two relations specified by the lines of file1 and file2. If one of the file names is the
standard input is used.
File1 and file2 must be sorted in increasing ASCII collating sequence on the fields on which they are to be joined, normally the first in
each line.
There is one line in the output for each pair of lines in file1 and file2 that have identical join fields. The output line normally con-
sists of the common field, then the rest of the line from file1, then the rest of the line from file2.
Input fields are normally separated spaces or tabs; output fields by space. In this case, multiple separators count as one, and leading
separators are discarded.
The following options are recognized, with POSIX syntax.
-a n In addition to the normal output, produce a line for each unpairable line in file n, where n is 1 or 2.
-v n Like -a, omitting output for paired lines.
-e s Replace empty output fields by string s.
-1 m
-2 m Join on the mth field of file1 or file2.
-jn m Archaic equivalent for -n m.
-ofields
Each output line comprises the designated fields. The comma-separated field designators are either 0, meaning the join field, or
have the form n.m, where n is a file number and m is a field number. Archaic usage allows separate arguments for field designators.
-tc Use character c as the only separator (tab character) on input and output. Every appearance of c in a line is significant.
EXAMPLES
sort /adm/users | join -t: -a 1 -e "" - bdays
Add birthdays to password information, leaving unknown birthdays empty. The layout of is given in users(6); bdays contains sorted
lines like
tr : ' ' </adm/users | sort -k 3 3 >temp
join -1 3 -2 3 -o 1.1,2.1 temp temp | awk '$1 < $2'
Print all pairs of users with identical userids.
SOURCE
/sys/src/cmd/join.c
SEE ALSO sort(1), comm(1), awk(1)BUGS
With default field separation, the collating sequence is that of sort -b -ky,y; with -t, the sequence is that of sort -tx -ky,y.
One of the files must be randomly accessible.
JOIN(1)