Hello all,
I've a CSV file and need to replace 5th field if its value is "X".
The exact requirement is to replace 5th field (column) with "Y" if
a. it's value is "X" AND
b. the line must start with ABC string
i guess this can be done with awk. Pl help.
For security reasons, the... (2 Replies)
Hi,
I am new to unix and am trying to do something below:
I have a pipe delimited file with millions of records. I need to replace the third column of the first record to the number of lines in the file. How can I do that.
Will appreciate any advice and help.
Thanks
Simi (3 Replies)
Hi,
I've internally searched through forums for about 2+ hours. Unfortunately, with no luck. Although I've found some cases close to mine below, but didn't help so much.
Actually, I'm in short with time. So I had to post my case. Hoping that you can help.
I have 2 files,
FILE1
... (0 Replies)
Hi,
I've internally searched through forums for about 2+ hours. Unfortunately, with no luck. Although I've found some cases close to mine below, but didn't help so much.
Actually, I'm in short with time. So I had to post my case. Hoping that you can help.
I have 2 files,
FILE1
... (1 Reply)
Something like vlookup in excel, column 2 in file 2 is blank and should be replaced by column 2 in file 1 based on comparing column 1 in both files.
file1
Code:
1234~abc~b~c~d~e~f~g~h~09/10/09
5678~def~b~c~d~e~f~g~h~12/06/10
8910~hij~b~c~d~e~f~g~h~03/28/13... (1 Reply)
Hi Friends,
Need Help. I have file1.txt as
File1.txt
|123|A|7267|Hyder|Cross|Sell|7801
|995|A|7051|2008|Lunar|New|Year|Promotion|7801
|996|A|7022|Q108|Targ|Prospect|&|SSCC|Savings|Promo|7801
|997|A|7182|Q1|Feb-Apr|08|Credit|ITA|PA|SBA|Campaign|7801
File2.txt... (7 Replies)
Hi Freinds,
I have 2 files . one is source.txt and second one is target.txt. I want to keep source.txt as baseline and compare target.txt. please find the data in 2 files and Expected output.
Source.txt
1|HYD|NAG|TRA|34.5|1234
2|CHE|ESW|DES|36.5|134
3|BAN|MEH|TRA|33.5|234... (5 Replies)
I have a .CSV file (file.csv) whose data are all enclosed in double quotes. Sample format of the file is as below:
column1,column2,column3,column4,column5,column6, column7, Column8, Column9, Column10
"12","B000QRIGJ4","4432","string with quotes, and with a comma, and colon: in... (3 Replies)
Hi,
Need to replace last field in a file(/etc/passwd) ,if first filed matches with particular username.
Scenario:
cat testfor1
deekshi:x:7082:7082::/home/deekshi:/bin/bash
harini1:x:7083:7083::/home/harini1:/bin/bash
Here,if first field contains "deekshi", then i should replace... (4 Replies)
Discussion started by: Sumanthsv
4 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)