sed is a command-line stream editor for filtering and transforming text.

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6
votes
4answers
166 views

Matching and pasting to line

So I have 2 very big text files, consisting of lines like so: First: Robert:Dillain:Other:Other:Other Julian:Brude:Other:Other:Other Megan:Flikk:Other:Other:Other Samantha:Minot:Other:Other:Other ...
0
votes
1answer
31 views

problem with sed inside sed

i am trying to parse a string inside a sed command but i am getting errors. if some1 can help me... it would be nice. i dunno what else to try sed -e "/pd begin $(echo 3:1I:1:1|sed 0,/:/{s/:/' ...
-5
votes
1answer
23 views

Remove characters from string with sed [on hold]

I have this header: >tr|G3Q381|G3Q381_GASAC Uncharacterized protein OS=Gasterosteus aculeatus PE=4 SV=1 and I was thankfully helped on here to get it to: >G3Q381_GASAC but now I need to ...
6
votes
4answers
18k views

Can sed replace new line characters?

Is there an issue with sed and new line character? I have a file test.txt with the following contents aaaaa bbbbb ccccc ddddd The following does not work: sed -r -i 's/\n/,/g' test.txt ...
0
votes
0answers
27 views

SED and regex expressions… addr1 and addr2

How can I use sed to match 'addr1' and reuse it again in 'addr2' field? #Ex.: echo "12a34" | sed 's/a/#bcd/g' # 12abcd34 #\# = match addr1
2
votes
3answers
41 views

how to use awk/cut to get column data which has space

I have data in below format: 16 SQL*Plus vilconv1 dox-conv2 16 TOAD background query session Disha WORKGROUP\AD now I want to ...
0
votes
1answer
21 views

How to change a single line in multiple files [duplicate]

I have ~750 .php files in the same directory that contain the line include("path/to/file.php"); I would like to change this line in every file to require_once("path/to/file.php"); What would be ...
3
votes
3answers
46 views

sed command and formatting one line help

I need help turning these headers: '>>tr|G1PEZ0|G1PEZ0_MYOLU Uncharacterized protein (Fragment) OS=Myotis lucifugus GN=SNCG PE=4 SV=1 into just this: '>G1PEZ0_MYOLU I've given up. I ...
1
vote
1answer
42 views

Single record of a file getting splitted over multiple lines

We are using flat text files to store in teradata table after transformations from Informatica. The file contains 14 fields (~ separated). But as the records are getting scattered over multiple lines ...
46
votes
2answers
67k views

How can I replace a string in a file(s)?

Replacing strings in files based on certain search criteria is a very common task. How can I replace string foo with bar in all files in the current directory? do the same recursively for sub ...
2
votes
1answer
34 views

Replacing by tab character in Sed in Osx

I am working in Mac OS X,I have tried several commands in sed to replace by a tab character followed by a file name. for f in *.txt; do sed -i '' -e "s/$/\t$f/g" $f; done for f in *.txt; do sed -i ...
3
votes
3answers
8k views

Insert text in specific lines of a file?

How can insert some text in specific lines of a file? What is most simplest method that I can use? (bash, sed, awk?) What I want to do, might be simple, but I don't know where I should start. It's ...
0
votes
1answer
54 views

Space removal after a pattern in SED

I have a file instrument.xml bash-4.1$ more instrument.xml <instr instr_id="CPT-2380950-011-001-826" valor_ch="" instr_type="CurrentAccount" instr_name="CPT-2380950-011-001-826" qn_type="1" ...
-1
votes
1answer
82 views

replace text in a file

are there any usefull command to replace all text that contain number and remove those number . Ex: myimages-202x250.jpg width="202" heignt="250" replace to myimages.jpg width="217" height="317" ...
5
votes
5answers
316 views

How to run a command only if sed replace strings

I want to enable multiverse repository in Ubuntu by a command line. sed -i "/^# deb.*multiverse/ s/^# //" /etc/apt/sources.list && apt-get update This command will run apt-get update every ...
1
vote
4answers
62 views

Replacing pattern with variable

I have 3 lines of numbers stored in a variable $new and I need to use this to replace 3 lines from a file which I have used grep and stored in another variable $old. I'm trying sed "s/$old/$new/g" ...
3
votes
4answers
124 views

Replace a marker in a text file with arbitrary new text

I have a file which contains some text and - on a single line - a marker which indicates where new content should be added foo bar %SUBSTITUTE% foo The line line substitute should be replaced by a ...
3
votes
5answers
2k views

Replacing text from a list of replacements. Added complication: backslashes

I have a file A that contains pairs of strings, one per line: \old1 \new1 \old2 \new2 ..... I would like to iterate over file A, and for each line perform the replacement (e.g. "\old1 -> \new1") ...
1
vote
3answers
29 views

Print more than one line from a text file

I am using the following code to print the second line from a file: sed '2q;d' file what can I add to this code so I can print two or more lines at once?
0
votes
3answers
260 views

How to delete html tags from a file using sed ?

I have a file that is mixed with both normal text I need and html-tags. I know that with REGEX it is possible to recognize html tags and with sed one can swap those for an empty string, but I do not ...
2
votes
1answer
48 views

how can I add an extra character after a word search [closed]

I have the following field names demelog voyapro naisjdf naismc decoide decoccm travide travccm equiccm mariccm Below is a sample of my file. There are more columns before the first fck=83... ...
1
vote
1answer
101 views

grep (/sed/awk) month range

I've looked around for solutions to this, but it's sort of difficult to search for the solution to such a specific problem (lot of words to put in Google). So, I have a file with data that looks like ...
1
vote
3answers
43 views

How to replace string with abc\\efg[255 with abc\\efg[23 using sed

I have a file and it has lines starting with abc. How can I replace the string abc\\efg[255 with abc\\efg[28 using sed?
3
votes
2answers
42 views

How to “grep” for line length in a given range?

I need to get only the lines from a textfile (a wordlist, separated with newline) that has a length range of minimum or equal than 3 characters, but not longer or equal then 10. Example: INPUT: ...
4
votes
3answers
77 views

How can I find and replace only if a match forms a whole word?

My script is: n="y" while [ "{n}" = "y" ] if [ $n == "n" ]; then break; fi echo "n is $n" do read -p "Enter the word to find = " word read -p "Enter word to replace = " replace ...
1
vote
2answers
96 views

extract blocks of text from xml file

I have a file with these contents: <People> <Person> <Name>Joe Blogs</Name> <Address>55 Oxford St</Address> ...lots of other properties ...
1
vote
1answer
46 views

Create files from templates, substitutions in middle of other words

Is there a way to convince m4 to replace a macro in the middle of a word? I would like this file, day.m4: define(Sat,Cat)dnl Saturday and this command: m4 day.m4 to produce this output: ...
12
votes
2answers
48k views

Return only the portion of a line after a matching pattern

So pulling open a file with cat and then using grep to get matching lines only gets me so far when I am working with the particular log set that I am dealing with. It need a way to match lines to a ...
0
votes
2answers
27 views

How to insert a variable in a variable in a random place?

Q: How can I insert variable $b to a truly random place in variable $a? Example INPUT variable content: $ echo $a árvíztűrő tükörfúrógép $ echo $b ZZ OUTPUT $ ./somemagicscript.sh árvíztűrő ...
0
votes
2answers
71 views

what are considered old and powerfull commands? [closed]

I came across the terms awk and sed, awk goes once through all lines and performs a task whenever a line meets a certain condition, sed can manipulate a stream of input before it goes further to the ...
4
votes
3answers
189 views

Can tr commands be chained to avoid multiple tr processes in a pipeline?

I have a bunch of txt files, I'd like to output them lower-cased, only alphabetic and one word-per line, I can do it with several tr commands in a pipeline like this: tr -d '[:punct:]' ...
0
votes
1answer
31 views

Regex for matchng anything between parenthesis

I have the following regex so far: printf "this is (test.com)\n" | grep -Po '(?<=\().*(?=\))' The above regex will print the desired output, which is test.com As far as I am adding new ...
8
votes
3answers
12k views

Extracting a regex matched with 'sed' without printing the surrounding characters

To all the 'sed' doctors out there: I have a seemingly trivial 'sed' question to which I have not been able to find a solution. How can you get 'sed' to exctract a regular expression it has matched ...
-1
votes
1answer
354 views

search for a character in one column and replace value in another column of matched records

I have a requirement to find value 2 in column 4 and wherever it matches replace 6th column with '-'sign in the beginning suppose if i have csv file - file1 like this abc,0,def,1234,ijk ...
1
vote
2answers
74 views

Remove a line if regex exists only in 1st column of each line in a csv file

I have the following comma-delimited data (spaces used for visual clarity): 1 2014 23 2352 19.24 7.18 1 2014 23 2353 19.78 4.65 24 2014 23 2354 20.26 25.34 1 2014 23 2355 26.65 42.76 1 2014 23 ...
1
vote
2answers
27 views

Using `sed` in Android without `g` modifier?

I have Stericson busy box installed in my rooted Nexus 10. I wanted to replace the first instance of </verse-sub-section> with </section> in the file here: <section>Psalm ...
2
votes
2answers
34 views
0
votes
0answers
13 views

how to keep the spaces when inserting line to parameter [duplicate]

When I want to see for example the line number 2 , from the CSV file I get the following line example1 LINE_NUM=2 # sed -n "${LINE_NUM}p" file.csv cwdfwefwe,"aaaaa ","\dsw\dawd\aw ...
8
votes
4answers
419 views

Output part of each line to a separate file

I have a file like this: a AGTACTTCCAGGAACGGTGCACTCTCC b ATGGATTTTTGGAGCAGGGAGATGGAATAGGAGCATGCTCCAT c ATATTAAATGGATTTTTGGAGCAGGGAGATGGAATAGGAGCATGCTCCATCCACTCCACAC d ...
1
vote
3answers
55 views

How do I replace a string with dollar sign in sed?

I want to replace this string: export TODO_FILE="$TODO_DIR/todo.txt with: export TODO_FILE="$TODO_DIR/writing.txt" in the file ~/.todo/config. I've run it with: sed -i 's/export ...
0
votes
0answers
21 views

How to highlight given string in given place?

How can we modify this: <a href="http://foo.bar1">asfdlksafbar1qsasadf</a><br> <a href="http://foo.bar2">svasfbar2saldkfj</a><br> <a ...
1
vote
1answer
39 views

sed regex not working for hidden characters

I have a list that has for some reason got some non alphanumeric characters appended to the end. I would have thought it would be a simple case of running : sed 's/[^A-Za-z0-9]$//' To replace ...
0
votes
3answers
89 views

create XML file using bash script

I want create simple xml file using bash script ( not with dom ) but when I set value in the line then echo print the $lorem word and not the val lorem=LOL echo '<root><foo ...
0
votes
1answer
60 views

Reading a string till a key word and replacing from there with another string

I am new to UNIX and am practising shell scripting. I have an application where I need string searching and replacement. There are some lines in a file 1 and file 2. I have a search key word. If the ...
0
votes
3answers
66 views

Using sed to remove digit separation commas enclosed in quotes and quotes itself from CSV? [duplicate]

How can I can use sed to remove from before-last column the group digit char comma and quotes itself? Please note that in the sample below the target column is not contained in double quotes. ...
1
vote
3answers
105 views

sed won't expand my BASH variable in script

I have this script, which will prompt for the relative or absolute path to the file and then swap whitespaces ' ' with '\ ' which works in Linux console. Substitution is done using the first sed ...
2
votes
2answers
96 views

How do I have sed only perform actions on the first match?

I have a bash script that extracts headers from the MIME Source of an email. The idea is that I only want to capture the headers of the message nothing else. It's not quite working right though. I ...
0
votes
0answers
39 views

Bash - Convert escape character colored text to BBCode

I want to convert a terminal escape-character colored text file to BBCode colored text. For this i've created an Android logfile with logcat -Cd > /sdcard/logcat.txt. The -C switch adds the color ...
7
votes
4answers
11k views

Copy/rename multiple files using regular expression (shell script)

I have a collection of files matching a pattern such as 'assignment02.cc', 'assignment02.h', 'assignment02.txt', etc. I would like to copy/rename these files into 'assignment03.cc', 'assignment03.h', ...
0
votes
5answers
60 views

sed to replace with backspace

I have trail.txt, which contains spice netlist. Now I want to replace all expanded parameters to one line only i.e. remove + and append that line to previous line. trail.txt data + net06706 ...