08-13-2019
You are right - the
pos variable is
split into the
var array. Then, in all input lines (
$0),
gensub (a specific
gawk function) replaces the characters (no matter what they are!) at the positions in
var by the pipe symbol, as said in
man gawk:
Quote:
gensub(regexp, replacement, how [, target])
Search the target string target for matches of the regular expression regexp. If how is a string beginning with ‘g' or ‘G' (short for “global”¯), then replace all matches of regexp with replacement. Otherwise, treat how as a number indicating which match of regexp to replace. Treat numeric values less than one as if they were one. If no target is supplied, use $0. Return the modified string as the result of the function. The original target string is not changed.
This User Gave Thanks to RudiC For This Post:
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
Is it possible to have a pattern as RS in awk. For Example pl. go through the statement;
"
Account Serial Number: 88888888
TT00X000000XXXXXXXXXXXXX
SS00X000000XX.000,XXXXXXXXXXXXXXXXXX0000XXXXXXX0000000000
WW00X0000000XX000000000000MMMMMMM MMMMMMM0000AA11110000000000000000000000000... (1 Reply)
Discussion started by: raguramtgr
1 Replies
2. UNIX for Dummies Questions & Answers
I have gone through all the threads in the forum and tested out different things. I am trying to split a 3GB file into multiple files. Some files are even larger than this.
For example:
split -l 3000000 filename.txt
This is very slow and it splits the file with 3 million records in each... (10 Replies)
Discussion started by: madhunk
10 Replies
3. UNIX for Dummies Questions & Answers
Hi ,
I want to assign a value to variable which will have size of the file that is
we have following files for eg:
ls -ltr
-rw-rw-r-- 1 dsadmin dstage 34 Oct 29 12:14 some.txt
-rw-rw-r-- 1 dsadmin dstage 0 Oct 29 14:52 eg.txt
-rwxrwxr-x 1 dsadmin dstage 1453 Oct... (2 Replies)
Discussion started by: Amey Joshi
2 Replies
4. Shell Programming and Scripting
Hi,
$ echo "Hellooo" | gawk '{print gensub(/o{3}/, "z", 1)}'
doesn't return "Hellz" as expected while:
$ echo "Hellooo" | awk '{print gensub(/o+/, "z", 1)}' produces "Hellz" correctly. Are the {m,n} quantifiers not supported in gensub?
I know that sub or gsub could do the job. It's just an... (2 Replies)
Discussion started by: ripat
2 Replies
5. UNIX for Dummies Questions & Answers
Hi Unix.com !
I would need some help for something I don't understand :confused:
input:
111|2 Y Z blue.
333|4 W X blue.; 5 Y Z red.
666|7 W X red.; 8 Y Z blue.
999|10 U V red.; 11 W X blue.; 12 Y Z red.
From $2, I would like to remove the sub-strings containing "blue" (and the... (4 Replies)
Discussion started by: beca123456
4 Replies
6. Shell Programming and Scripting
Hello;
I have a file consists of 4 columns separated by tab. The problem is the third fields. Some of the them are very long but can be split by the vertical bar "|". Also some of them do not contain the string "UniProt", but I could ignore it at this moment, and sort the file afterwards. Here is... (5 Replies)
Discussion started by: yifangt
5 Replies
7. Shell Programming and Scripting
Hi,
I have a sample file in the following format.
000013560240|000013560240|001|P|155|99396|0||SS00325665|
000013560240|000013560240|002|P|17|99000|0||SS00325665|
000013560240|000013560240|002|F|-17|99000|0|R|SS00325665|
000013560240|000013560240|003|P|20|82270|0||SS00325665|... (3 Replies)
Discussion started by: nua7
3 Replies
8. Shell Programming and Scripting
Hi
I have strings like these :
Vengeance mitt
Men Vengeance gloves
Women Quatro Windstopper Etip gloves
Quatro Windstopper Etip gloves
Girls Thermobite hooded jacket
Thermobite Triclimate snow jacket
Boys Thermobite Triclimate snow jacket
and I would like to get the lower case words at... (2 Replies)
Discussion started by: louisJ
2 Replies
9. Shell Programming and Scripting
I am trying to run the awk below. My question is when I split the input, then run anotherawk to perform a calculation using that splitas the input there are no issues. When I try to combine them the output is not correct, is the split not working or did I do it wrong? Thank you :).
input
... (8 Replies)
Discussion started by: cmccabe
8 Replies
10. Programming
Hello gurus,
I have data in one of the oracle tables as as below:
Column 1 Column 2
1 NY,NJ,CA
2 US,UK,
3 AS,EU,NA
fyi, Column 2 above has data delimited with a comma as shown.
I need a sql query the produce the below output in two columns... (5 Replies)
Discussion started by: calredd
5 Replies
textutil::trim(n) Text and string utilities, macro processing textutil::trim(n)
__________________________________________________________________________________________________________________________________________________
NAME
textutil::trim - Procedures to trim strings
SYNOPSIS
package require Tcl 8.2
package require textutil::trim ?0.7?
::textutil::trim::trim string ?regexp?
::textutil::trim::trimleft string ?regexp?
::textutil::trim::trimright string ?regexp?
::textutil::trim::trimPrefix string prefix
::textutil::trim::trimEmptyHeading string
_________________________________________________________________
DESCRIPTION
The package textutil::trim provides commands that trim strings using arbitrary regular expressions.
The complete set of procedures is described below.
::textutil::trim::trim string ?regexp?
Remove in string any leading and trailing substring according to the regular expression regexp and return the result as a new
string. This is done for all lines in the string, that is any substring between 2 newline chars, or between the beginning of the
string and a newline, or between a newline and the end of the string, or, if the string contain no newline, between the beginning
and the end of the string. The regular expression regexp defaults to "[ \t]+".
::textutil::trim::trimleft string ?regexp?
Remove in string any leading substring according to the regular expression regexp and return the result as a new string. This apply
on any line in the string, that is any substring between 2 newline chars, or between the beginning of the string and a newline, or
between a newline and the end of the string, or, if the string contain no newline, between the beginning and the end of the string.
The regular expression regexp defaults to "[ \t]+".
::textutil::trim::trimright string ?regexp?
Remove in string any trailing substring according to the regular expression regexp and return the result as a new string. This apply
on any line in the string, that is any substring between 2 newline chars, or between the beginning of the string and a newline, or
between a newline and the end of the string, or, if the string contain no newline, between the beginning and the end of the string.
The regular expression regexp defaults to "[ \t]+".
::textutil::trim::trimPrefix string prefix
Removes the prefix from the beginning of string and returns the result. The string is left unchanged if it doesn't have prefix at
its beginning.
::textutil::trim::trimEmptyHeading string
Looks for empty lines (including lines consisting of only whitespace) at the beginning of the string and removes it. The modified
string is returned as the result of the command.
BUGS, IDEAS, FEEDBACK
This document, and the package it describes, will undoubtedly contain bugs and other problems. Please report such in the category textutil
of the Tcllib SF Trackers [http://sourceforge.net/tracker/?group_id=12883]. Please also report any ideas for enhancements you may have for
either package and/or documentation.
SEE ALSO
regexp(n), split(n), string(n)
KEYWORDS
prefix, regular expression, string, trimming
CATEGORY
Text processing
textutil 0.7 textutil::trim(n)