[All variants] remove first pair of parentheses Post: 302934576

Sponsored Content

Top Forums Shell Programming and Scripting [All variants] remove first pair of parentheses Post 302934576 by drl on Monday 9th of February 2015 12:11:47 AM

02-09-2015

Registered User

Hi.

Using bash operator "=~" with extended regular expressions:

Code:

#!/usr/bin/env bash

# @(#) s2	Demonstrate extended regular expressions, bash =~.

# Utility functions: print-as-echo, print-line-with-visual-space, debug.
# export PATH="/usr/local/bin:/usr/bin:/bin"
LC_ALL=C ; LANG=C ; export LC_ALL LANG
pe() { for _i;do printf "%s" "$_i";done; printf "\n"; }
pl() { pe;pe "-----" ;pe "$*"; }
db() { ( printf " db, ";for _i;do printf "%s" "$_i";done;printf "\n" ) >&2 ; }
db() { : ; }
C=$HOME/bin/context && [ -f $C ] && $C

FILE=${1-data1}

pl " Input data file $FILE:"
cat $FILE

pl " Expected results:"
cat expected-output.txt

pl " Results:"
PATTERN='(^[(][^)]*[)]-)(.*)'
while read line
do
  db ' Working on line ['"$line"']'
  if [[ $line =~ $PATTERN ]]
  then
    printf "%s\n" "${BASH_REMATCH[2]}"
  else
    printf "%s\n" $line
  fi
done <$FILE

exit 0

producing:

Code:

$ ./s2

Environment: LC_ALL = C, LANG = C
(Versions displayed with local utility "version")
OS, ker|rel, machine: Linux, 2.6.26-2-amd64, x86_64
Distribution        : Debian 5.0.8 (lenny, workstation) 
bash GNU bash 3.2.39

-----
 Input data file data1:
(ok)-test
(ok)-test-(ing)
(some)-test-(ing)-test
test-(ing)

-----
 Expected results:
test
test-(ing)
test-(ing)-test
test-(ing)

-----
 Results:
test
test-(ing)
test-(ing)-test
test-(ing)

Best wishes ... cheers, drl

This User Gave Thanks to drl For This Post:

drl

View Public Profile for drl

Find all posts by drl

9 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Replace text in parentheses

Hi I would like to replace a comma in parentheses to a semicolon for example. Other commas outside () stay unchanged. How can I do this? aaaa,bbb,ccc,ddd(eee,fff,ggg),hhh,iii to aaaa,bbb,ccc,ddd(eee;fff;ggg),hhh,iii Thanks

2. UNIX for Dummies Questions & Answers

brackets vs parentheses - single and double

hi, unix gurus. i am wondering if someone can give me a clear explanation of the differneces between parentheses and brackets, both single and double. i have heard that double parentheses (( are used for numerical expressions and that single brackets [ are used for strings. but i see...

3. Shell Programming and Scripting

CREATING A SYLLABLE CONCORDANCE WITH POSITIONAL VARIANTS

Hello, Some time back I had posted a request for a syllable concordance in which if a syllable was provided in a file, the program would extract a word from a file entitled "Corpus" matching that syllable. The program was The following script was provided which did the job and for which I am...

4. Shell Programming and Scripting

When does an if statement need parentheses

I was looking at a script in my little book on bash and saw that one of the if statements had parentheses instead of brackets for the condition. I've been trying to find in my book where it talks about parentheses (because the examples on the if statement in an earlier chapter doesn't seem to...

5. Shell Programming and Scripting

Remove very first pair of duplicate words

I have file which is almost look like below MMIT MMIT ...

6. Shell Programming and Scripting

Help with extracting data within parentheses

This is my input file: a|b|c(ef)|g|h(km)|p My output file should look like: a|b|ef|g|km|p That is, pipe is the delimiter. The data within pipe must be displayed as it is but if it encounters any data within parentheses, then only the data within parentheses has to be displayed ( the data...

7. Answers to Frequently Asked Questions

Add string to parentheses

Suppose I have this code : int main () { int i = NULL; /* incorrect */ return 0; } and I want to put the word between the two parentheses like this : int main (void) { int i = NULL; /* incorrect */ return 0; } which command is used to do it in Linux ?

8. Shell Programming and Scripting

[All variants] Change settings

Hi, I have a big settings confg (file attached). There are a few separate tasks that I have to accomplish. All scripting/programming languages are appreciated. 1. I need to parse all values and output to stdout. Sample output (truncated): VALUEA 2017-01-01 Lores ipsum Lorem ipsum dolor sit...

9. UNIX for Beginners Questions & Answers

Merge 4 bim files by keeping only the overlapping variants (unique rs values )

Dear community, I am facing a problem and I kindly ask your help: I have 4 different data sets consisted from 3 different types of array. On each file, column 1 is chromosome position, column 2 is SNP id etc... Lets say I have the following (bim) datasets: x2014: 1 rs3094315...

LEARN ABOUT OPENSOLARIS

setusershell

getusershell(3C)					   Standard C Library Functions 					  getusershell(3C)

NAME

       getusershell, setusershell, endusershell - get legal user shells

SYNOPSIS

       #include <unistd.h>

       char *getusershell(void);

       void setusershell(void);

       void endusershell(void);

DESCRIPTION

       The  getusershell()  function  returns  a  pointer  to  a  legal  user  shell  as defined by the system manager in the file /etc/shells. If
       /etc/shells does not exist, the following locations of the standard system shells are used in its place:

	 /bin/bash		    /bin/csh
	 /bin/jsh		    /bin/ksh
	 /bin/ksh93		    /bin/pfcsh
	 /bin/pfksh		    /bin/pfsh
	 /bin/sh		    /bin/tcsh
	 /bin/zsh		    /sbin/jsh
	 /sbin/pfsh		    /sbin/sh
	 /usr/bin/bash		    /usr/bin/csh
	 /usr/bin/jsh		    /usr/bin/ksh
	 /usr/bin/ksh93 	    /usr/bin/pfcsh
	 /usr/bin/pfksh 	    /usr/bin/pfsh
	 /usr/bin/sh		    /usr/bin/tcsh
	 /usr/bin/zsh		    /usr/sfw/bin/zsh
	 /usr/xpg4/bin/sh

       The getusershell() function opens the file /etc/shells, if it exists, and returns the next entry in the list of shells.

       The setusershell() function rewinds the file or the list.

       The endusershell() function closes the file, frees any memory used by getusershell() and setusershell(), and rewinds the file /etc/shells.

RETURN VALUES

       The getusershell() function returns a null pointer on EOF.

BUGS

       All information is contained in memory that may be freed with a call to endusershell(), so it must be copied if it is to be saved.

NOTES

       Restricted shells should not be listed in /etc/shells.

SunOS 5.11							    1 Nov 2007							  getusershell(3C)