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

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1answer
86 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 ...
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3answers
110 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. ...
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1answer
162 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 ...
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2answers
121 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 ...
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0answers
53 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 ...
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3answers
215 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 ...
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5answers
93 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 ...
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1answer
24 views

Coordinates X237595Y81600 to X2375Y8160

I have create a gerber file and it has lines inside which look like this: X90095Y15350 X100095Y15350 X110095Y15350 X120095Y15350 X120095Y25350 X110095Y25350 X100095Y25350 X90095Y25350 X80095Y25350 ...
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1answer
45 views

Sed with angle brackets

This works sed 's/[[:space:]]*<default>false/XXX/' Why does prepending a > make it fail sed 's/>[[:space:]]*<default>false/XXX/' escaping the > does not help either. In ...
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2answers
107 views

sed to replace a word from a file with the contents of another file? [duplicate]

I have two files file1 & file2. Contents of file1: Text1 Text2 Text3 Contents of file2: Sample1 Sample2 Sample3 I would like to replace the word Text1 from file1 with the contents of ...
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1answer
72 views

How to add the content of a text file to the middle of another text file

I tried to use sed, but I realized that it doesn't allow to charge a complete file. I am looking for a quick and neat way to: a.txt a b c b.txt d e f And obtain c.txt a d e f b c
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2answers
43 views

Generate Sequence number for each line at the end .. modified t he post can someone help&suggest on this

I am new to linux I have got this query sed '/./=' abc.txt| sed '/./N; s/\n/, /' >> as.dat source file has 3 rows like below a b c When use the following command it gives me result like ...
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1answer
177 views

sed command inside sed

Is it possible to run sed command inside sed, something like this: sed -i.bak -e '${sed -n 1,1p file.txt},$d' output.file I want first line of file.txt which is number to be input parameter for ...
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1answer
103 views

regex find replace strings starting or beginning with backslash

I have a compilation album in my music library that has song titles in the form of ARTIST/ TITLE, which is making it really difficult to cp or mv these files because of the slash. So I'd like to ...
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3answers
73 views

Append and write out variable-named file from list of variables

I would like to create multiple 'wget' shell scripts to download a batch of considerably large (~3GB) files using our HPC cluster. The names of the files are stored in filenames.txt, like so: $cat ...
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2answers
514 views

sed: read whole file into pattern space without failing on single-line input

Reading a whole file into pattern space is useful for substituting newlines, &c. and there are many instances advising the following: sed ':a;N;$!ba; [commands...]' However, it fails if the ...
3
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2answers
177 views

Capture in shell variables the arguments after a command (between brackets)

Suppose I have a file that contains, among many other things, \command{arg1,arg2,arg3} (arguments been paths, expressed with /, ., characters and numbers) But that a user can as well call it ...
3
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2answers
199 views

Find the line number which contains the pattern with custom delimiter

As in example I'm trying to get line numbers which contains the pattern. My pattern contains slashes so I wanted to add custom delimiter. This simple one works: sed -n '/file/=' temp.txt Using ...
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1answer
58 views

split line based on space and delete the second part

I have a big file >fid|29290408|locus|VBIEntCas2262_0001| Phosphoglycolate phosphatase (EC 3.1.3.18) [Enterococcus casseliflavus EC20] ...
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2answers
76 views

Copy the first 2 lines from a file and then remove the lines

I need to process a file using a shell script. The file arrives with the data as well as some embedded information releavant to how it is processed. The file is in the following format; ...
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5answers
222 views

How to replace only the third occurrence of the file in unix using only sed command?

How to replace the third occurrence of the string in the file using sed command. Example: Change only the third occurrence of is to us in the file. My input file contains: hai this is linux. hai ...
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2answers
47 views

Why does regex with \\$\{ work with egrep, but not with sed?

Given a text like this ./RFF_09 -f${FILE} -c${COND} inside a file, this egrep command will correctly match: egrep './RFF(.*) (.*)-c\\$\{COND\}' file but this sed command will not sed -n ...
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7answers
694 views

can we print the last word of each line in linux using sed command?

suppose , if there is a file consisting of following lines , if they are 12345 567 7878 66 er3 t45t y6y46y 4y6 y656y y5y 46y6 65y7 y66uyuy yy46y6y The output has to look like: 66 ...
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3answers
96 views

Adding text to beginning of text file

I am trying to add a line of text to the beginning of a text file (Actually not text, but just two backslashes). I am trying the following, which I found in this answer: Add lines to the beginning and ...
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1answer
24 views

Insert space at specified position in a file

I have this sample file: 234234|111||J1X0H8|SERP||R|D|666|M 234235|222||J1X0N5|SERP||C||555|M For each line, I need to insert a space after the 3rd character of the 4th column, like so: ...
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2answers
219 views

How to convert Log file to CSV using bash

Is it possible to turn this log entry into a properly formatted csv file using sed/awk? I've tried multiple ways to do this using sed/awk. Alas I couldn't do it. Before I do it in perl. is this ...
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3answers
73 views

Removing mulitple lines

I am trying to write up a command line interfaces that will removes a particular section / lines of codes within a list of json files. By the way, the json file are located within the sub-folders of ...
2
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3answers
212 views

Replace multiline string in files

I have a number of files I want to update by replacing one multi-line string with another multi-line string. Something along the lines of: * Some text, * something else * another thing And I want ...
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4answers
65 views

Removing an empty line and the line above it

I have a large .fna file containing millions of DNA sequences. Due to some write errors after truncating my primers, I'm left with some sequence headers with no sequence following it. An example is ...
3
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3answers
269 views

sed fails to remove newline character

I've been using sed for quite some time but here is a quirk I came around with, which I am not able to resolve. Let me explain my problem with the actual case. Scene#1 printf "ls" | xclip ...
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2answers
182 views

sed “e” and “g” flags not working together

Given this: echo AAA | sed -r 's/A/echo B/ge' I get this: Becho Becho B I would have thought I would get "BBB". This is with GNU sed version 4.2.1. What is going on, and how can I use the ...
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3answers
56 views

How to select first occurrence between two patterns including them

How can I select first occurrence between two patterns including them. Preferably using sed or awk. I have: text something P1 something content1 content2 something P2 something text something P1 ...
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0answers
14 views

Escape ampersand in bash variable used as a sed argument [duplicate]

I have a template Hello NAME welcome and want to replace NAME with data like "Judy&Mary". Why does this not work? TEMPLATE="Hello NAME welcome" DATA="Judy&Mary" echo $TEMPLATE | sed -e ...
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3answers
60 views

how to replace a character within in a multiple double quoted words within a line using sed?

I have text file including text format like this. 012345,"[ThinkPadT2/3Gband,Mac]",Lenovo,"iPhone3G,A1241" How do i replace comma inside words only within double quote by pipe(|) operator using ...
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1answer
47 views

How can I use regex to extract the text following two conditions into a variable?

I'd like to extract a setting for a given host in the ssh_config file and put it into a variable. Host mysite HostName 123.1.1.1 User myuser Port 13245 GSSAPIAuthentication no ...
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2answers
84 views

Formatting ifconfig using sed/awk

I'm using ifconfig on OpenSUSE. When I run ifconfig eth0 I get eth0 Link encap:Ethernet HWaddr CE:FD:75:DF:A5:6D inet addr:172.16.4.177 Bcast:172.16.5.255 Mask:255.255.254.0 inet6 ...
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3answers
185 views

How can I insert the contents of a file into a string in bash

I would like to append the contents of a multi-line text file after a particular line in a string. For example, if the file file.txt contains line 1 line 2 I'd like do so something like printf ...
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4answers
44 views

Two operations with sed on the same pattern

I use this following sed command for display names of files with a specific form: ls -1 *|sed 's/^\(.*\).png/\1\/\1,/g' If I have two files named BOH_Contour.png and BOV_Web.png, I obtain ...
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2answers
34 views

Replace some text with sed

I have tried this to replace the resis_test by m.gds by searching the key word LAYOUT_PRIMARY. sed -e 's/\(LAYOUT PRIMARY\).*\1 /m.gds/' < FILE.ex > b FILE.ex LAYOUT PRIMARY "resis_test" ...
2
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2answers
385 views

How to remove all CRLF in file (not replace with LF)

I'd like to remove all carriage returns followed by line feeds (CRLF), such as \r\n in a file. How can I do that? I can't use dos2unix because that replaces CRLF with LF. And I can't use tr because ...
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0answers
60 views

sed stdin behaviour

Using sed for a direct stdin treatment of data, I expect that a line is treated after the enter. This is what happens when I test on CygWin or Linux but on my AIX, a second new line is needed to treat ...
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2answers
149 views

Get current timezone on Centos 7

On previous version of centos , i used the following command to get the current timezone in my bash script timezone=$(sed 's/ZONE=//g' /etc/sysconfig/clock) Output is "America/New_York" How can i ...
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5answers
100 views

Using sed to cut a string starting with n spaces and ending with n spaces

How to use sed to cut text starting with x spaces and ending with y spaces? For instance This is my string: kkk 111 fff aaabbb 5d98 ccc mmmppp 9369d and I want to get this output: ...
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3answers
437 views

Strip off word pattern at the end of string using sed

I have following string: ksh -x SCRIPT2.ksh $BUSSINESSDATE & PID=$!; ksh -x SCRIPT1.ksh $BUSSINESSDATE & PID=$!; I want to strip off the last word & PID=$!;. Desired result is: ksh -x ...
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2answers
73 views

Search and Replace question

I need to find all occurrences of AAsomeArbitraryStringBB and replace it with CCsomeArbitraryStringDD. So AAHelloBB Text AAByeByeBB becomes CCHelloDD Text CCByeByeDD. It's important to note ...
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2answers
117 views

Extracting values from a file keyed by multiple keys

Consider a file with key=value pairs, and each key is optionally a concatenation of multiple keys. In other words, many keys can map to one value. The reason behind this is that each key is a ...
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3answers
429 views

Pattern Search between specific lines and print line numbers

I have a file of 20 lines. I want to search for a string between the lines 10 and 15 and print the string along with the line numbers of the original file. I have tried sed -n 10,15p file | grep -n ...
3
votes
1answer
43 views

Filter out inconsistent data blocks

I would like to filter out rows that has inconsistent geno values in line-part blocks. In case of duplicate consistent values , I would just keep the first row. As example, 'gf345 part1' has more ...
2
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3answers
75 views

Rename mp3 file names to a pattern

I have a list of like names likes so: /A/B/C/D/E/F/filename_album1-003.mp3 its more like album\d+ I would like to change it to something like /A/B/C/D/E/F/filename_song-3.mp3 song is just a ...
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2answers
58 views

find and replace a value in a line of text

I have a text file which contain only 1 line of text 1314:Battery:1.90:50:30 I'm trying to figure out if is there anyway to do a grep and sed to change the value 50 and 30 to the following ...