Visit Our UNIX and Linux User Community


How to squeeze multiple pipe character '|' into single '|' using sed?


 
Thread Tools Search this Thread
Special Forums UNIX Desktop Questions & Answers How to squeeze multiple pipe character '|' into single '|' using sed?
# 1  
Old 04-20-2012
How to squeeze multiple pipe character '|' into single '|' using sed?

Hi,

I am trying to convert multiple Unix pipe symbol or bar into single |. I have tried with the following sed statements, but, no success Smilie. I need it using sed only
Code:
echo "sed 's/\|\+/\|/g'
sed 's/[\|]*/\|/'
sed 's/\|*/|/'
sed -r 's/\|+/\|/'


However, the below awk code is working fine.
Code:
awk '{gsub(/\|+/,"|")}1'

# 2  
Old 04-20-2012
Code:
echo '1|23||45|||6|' | sed 's/||*/|/g'

This User Gave Thanks to vgersh99 For This Post:
# 3  
Old 04-20-2012
The tr utility can do it with its -s (squeeze) option.

Code:
$ echo 'a||||b' | tr -s '|'
a|b

$

# 4  
Old 04-23-2012
Quote:
Originally Posted by vgersh99
Code:
echo '1|23||45|||6|' | sed 's/||*/|/g'

Hi vgersh99, thank you for the code. Can't I use \+ to mean one or more of this type, instead of this archaic wild-card character '*'?
# 5  
Old 04-23-2012
@royalibrahim. \+ is a GNU extension to sed. You can use it but your command will only work with GNU sed..

Previous Thread | Next Thread
Test Your Knowledge in Computers #819
Difficulty: Medium
In CSS, E ~ F matches an F element preceded by an E element.
True or False?

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

How to repeat a character in a field if it's a single character?

I have a csv dataset like this : C,rs18768 G,rs13785 GA,rs1065 G,rs1801279 T,rs9274407 A,rs730012 I'm thinking of use like awk, sed to covert the dataset to this format: (if it's two character, then keep the same) CC,rs18768 GG,rs13785 GA,rs1065 GG,rs1801279 TT,rs9274407... (7 Replies)
Discussion started by: nengcheng
7 Replies

2. Shell Programming and Scripting

sed command to grep multiple pattern present in single line and delete that line

here is what i want to achieve.. i have a file with below contents cat fileName blah blah blah . .DROP this REJECT that . --sport 7800 -j REJECT --reject-with icmp-port-unreachable --dport 7800 -j REJECT --reject-with icmp-port-unreachable . . . more blah blah blah --dport 3306... (14 Replies)
Discussion started by: vivek d r
14 Replies

3. Programming

Multiple children and single pipe

Greetings everyone, I need a bit of help in solving the following problem: I'm given an array of numbers and I have to compute the sum of the array elements using n processes, and the inter process communication has to be done with pipes(one pipe, to be exact). I managed to solve the problem... (14 Replies)
Discussion started by: ephesos
14 Replies

4. Shell Programming and Scripting

Combining multiple rows in single row based on certain condition using awk or sed

Hi, I'm using AIX(ksh shell). > cat temp.txt "a","b",0 "c",bc",0 "a1","b1",0 "cc","cb",1 "cc","b2",1 "bb","bc",2 I want the output as: "a","b","c","bc","a1","b1" "cc","cb","cc","b2" "bb","bc" I want to combine multiple lines into single line where third column is same. Is... (1 Reply)
Discussion started by: samuelray
1 Replies

5. Shell Programming and Scripting

SED - Multiple String - Single Line

Would appear to me to be a farily simple question but having search all the threads I can't find the answer .. I just want sed to output the single line in a file that contains two string anywhere on the line.. e.g. currently using this command sed -n -e'/str1/p' -e '/str2/p' < file and... (3 Replies)
Discussion started by: flopster
3 Replies

6. Shell Programming and Scripting

Replace multiple occurances of same character with a single character.

Hi all, Greetings, I have the following scenario, The contents of main file are like : Unix|||||forum|||||||||||||||is||||||the||best so||||||be|||||on||||||||||||||||||||||||||||||||||||||||||||it And i need the output in the following form: Unix=forum=is=the=best so=be=on=it ... (3 Replies)
Discussion started by: dipanchandra
3 Replies

7. Shell Programming and Scripting

Putting multiple sed commands on a single line

Hi, I want to make sed write a part of fileA (first 7 lines) to file1 and the rest of fileA to file2 in a single call and single line in sed. If I do the following: sed '1,7w file1; 8,$w file2' fileA I get only one file named file1 plus all the characters following file1. If I try to use curly... (1 Reply)
Discussion started by: varelg
1 Replies

8. Shell Programming and Scripting

Matching multiples of a single character using sed and awk

Hi, I have a file 'imei_01.txt' having the following contents: $ cat imei_01.txt a123456 bbr22135 yet223 where I want to check whether the expression 'first single alphabet followed by 6 digits' is present in the file (here it is the first record 'a123456') I am using the following... (5 Replies)
Discussion started by: royalibrahim
5 Replies

9. Shell Programming and Scripting

Single character wildcard for SED

Could someone tell me the single character wildcard for SED? I have the file below: $ more input2 AAA /A/B/C BBB /D/E/F CCC /G/H/I DDD I want to remove all strings which contain forward slashs "/" to get the below: AAA BBB CCC I tried to do it in SED by the command below but I... (8 Replies)
Discussion started by: stevefox
8 Replies

10. Shell Programming and Scripting

Help needed in processing multiple variables in a single sed command.

Is it possible to process multiple variables in a single sed command? I have the following ksh with three variables and I want to search for all variables which start with "var" inside input.txt. I tired "$var$" but it just prints out everyting in input.txt and does not work. $ more test.ksh... (5 Replies)
Discussion started by: stevefox
5 Replies

Featured Tech Videos