I have an extremely large csv file that I need to search the second field, and upon matches update the last field...
I can pull the line with awk.. but apparently you cant use awk to directly update the file? So im curious if I can use sed to do this... The good news is the field I want to... (5 Replies)
I get a CSV file every day with 2 columns and multiple rows
ex:
date1,date2 ( both the fields are varchar fields)
This data has to be updated in a table which is being done manually and i want to automate that.
1. I have to select all the data from the prod table( 2 columns { date1,date2}) into... (4 Replies)
Hi,
I have a filename.csv in which there are 3 colums, ie:
Name ; prefixnumber ; number
root ; 020 ; 1234567
user1,2,3 ; 070 ; 7654321
What I want is to merge colum 2 and 3 that it becomes 0201234567 or even better +31201234567 so the country number is used and drop the leading 0.... (9 Replies)
I have two CSV lines, I.e.:
Line 1 = the,quick,brown,fox, ,jumps, ,the, ,dog
Line 2 = the,quick,brown,fox, , ,over, ,lazy,dog
Literally, columns missing from line 1 exist in line 2.
Any suggestions on quick ways to combined these two lines into one line:
New line:... (2 Replies)
Hello experts,
I need to validate a csv file which contains data like this:
Sample.csv
"ABCD","I",23,0,9,,"23/12/2012","OK","Street,State, 91135",0
"ABCD","I",23,0,9,,"23/12/2012","OK","Street,State, 91135",0
I just need to check if all the records contain exactly the number of... (5 Replies)
Hello folks
I have a txt file of information about journal articles from different fields. I need to convert this information into a format that is easier for computers to manipulate for some research that I'm doing on how articles are cited. The file has some header information and then details... (8 Replies)
Hello,
Beginning with shell scipting, I'm trying to find in a csv file, the lines where the field related to hostname is displayed as an FQDN intead the hostname. (some lines are correct) and the to correct that inside the file:
Novell,11.0,UNIX Server,bscpsiws02,TxffnX1tX1HiDoyBerrzWA==... (2 Replies)
I have a csv file formatted like this:
2014-08-21 18:06:26,A,B,12345,123,C,1232,26/08/14 18:07and I'm trying to change it to MM/DD/YYYY HH:MM for both occurances.
I have got this:
awk -F, 'NR <=1 {print;next}{"date +%d/%m/%Y\" \"%H:%m -d\""$1 "\""| getline dte;$1=dte}1' OFS="," test.csvThis... (6 Replies)
Hi All ,
I would require your help to generate one output file after post processing of one CSV file as stated below
This file is just a small cut from a big file . Big file is having 20000 lines
PATTERN,pat0,pat1,pat2,pat3,pat4,pat5,pat6,pat7,pat8,pat9... (2 Replies)
Discussion started by: kshitij
2 Replies
LEARN ABOUT HPUX
regex
regex(1F) FMLI Commands regex(1F)NAME
regex - match patterns against a string
SYNOPSIS
regex [-e] [ -v "string"] [ pattern template] ... pattern [template]
DESCRIPTION
The regex command takes a string from the standard input, and a list of pattern / template pairs, and runs regex() to compare the string
against each pattern until there is a match. When a match occurs, regex writes the corresponding template to the standard output and
returns TRUE. The last (or only) pattern does not need a template. If that is the pattern that matches the string, the function simply
returns TRUE. If no match is found, regex returns FALSE.
The argument pattern is a regular expression of the form described in regex(). In most cases, pattern should be enclosed in single quotes
to turn off special meanings of characters. Note that only the final pattern in the list may lack a template.
The argument template may contain the strings $m0 through $m9, which will be expanded to the part of pattern enclosed in ( ... )$0 through
( ... )$9 constructs (see examples below). Note that if you use this feature, you must be sure to enclose template in single quotes so
that FMLI does not expand $m0 through $m9 at parse time. This feature gives regex much of the power of cut(1), paste(1), and grep(1), and
some of the capabilities of sed(1). If there is no template, the default is $m0$m1$m2$m3$m4$m5$m6$m7$m8$m9.
OPTIONS
The following options are supported:
-e Evaluates the corresponding template and writes the result to the standard output.
-v "string" Uses string instead of the standard input to match against patterns.
EXAMPLES
Example 1: Cutting letters out of a string
To cut the 4th through 8th letters out of a string (this example will output strin and return TRUE):
`regex -v "my string is nice" '^.{3}(.{5})$0' '$m0'`
Example 2: Validating input in a form
In a form, to validate input to field 5 as an integer:
valid=`regex -v "$F5" '^[0-9]+$'`
Example 3: Translating an environment variable in a form
In a form, to translate an environment variable which contains one of the numbers 1, 2, 3, 4, 5 to the letters a, b, c, d, e:
value=`regex -v "$VAR1" 1 a 2 b 3 c 4 d 5 e '.*' 'Error'`
Note the use of the pattern '.*' to mean "anything else".
Example 4: Using backquoted expressions
In the example below, all three lines constitute a single backquoted expression. This expression, by itself, could be put in a menu defini-
tion file. Since backquoted expressions are expanded as they are parsed, and output from a backquoted expression (the cat command, in this
example) becomes part of the definition file being parsed, this expression would read /etc/passwd and make a dynamic menu of all the login
ids on the system.
`cat /etc/passwd | regex '^([^:]*)$0.*$' '
name=$m0
action=`message "$m0 is a user"`'`
DIAGNOSTICS
If none of the patterns match, regex returns FALSE, otherwise TRUE.
NOTES
Patterns and templates must often be enclosed in single quotes to turn off the special meanings of characters. Especially if you use the
$m0 through $m9 variables in the template, since FMLI will expand the variables (usually to "") before regex even sees them.
Single characters in character classes (inside []) must be listed before character ranges, otherwise they will not be recognized. For exam-
ple, [a-zA-Z_/] will not find underscores (_) or slashes (/), but [_/a-zA-Z] will.
The regular expressions accepted by regcmp differ slightly from other utilities (that is, sed, grep, awk, ed, and so forth).
regex with the -e option forces subsequent commands to be ignored. In other words, if a backquoted statement appears as follows:
`regex -e ...; command1; command2`
command1 and command2 would never be executed. However, dividing the expression into two:
`regex -e ...``command1; command2`
would yield the desired result.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWcsu |
+-----------------------------+-----------------------------+
SEE ALSO awk(1), cut(1), grep(1), paste(1), sed(1), regcmp(3C), attributes(5)SunOS 5.10 12 Jul 1999 regex(1F)