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

learn more… | top users | synonyms

3
votes
2answers
923 views

Split log file by time range

I have a log file and would like to cut it into copies of 15min. In the log file the lines start with: dd mmm yyyy hh:mm:ss,xxx e.g. 12 Feb 2013 16:05:02,xxx log text... and the file rotates ...
-2
votes
4answers
71 views

How to print last few contents in a line?

I have a file that has lines shown below, ta=/*92/*39/*1/*649/*12 ta=/*92/*12/*4/*342/*90 ta=/*92/*33/*9/*455/*3 ta=/*92/*12/*3/*649/*25 ta=/*92/*99/*7/*649/*7 and so on. I want a file that will ...
3
votes
4answers
103 views

To remove newlines after empty line

Data 4. Alendronic acid A. Antiosteoporotic agent. B. Inhibit osteoclast formation and function by inhibiting FPPS enzyme, so increase bone mass. C. Osteoporosis in combination with vitamin D. ...
3
votes
7answers
151 views

Insert a word in the first line of the file

Input: firstline secondline thirdline ...some magic happens here... :) Output: insertedtextfirstline secondline thirdline Question: How can I insert the insertedtext to the start of the first ...
2
votes
2answers
66 views

Inserting into middle of a string using sed

I'm trying to insert a string into multiple lines using sed, but i don't get the desired result I have this: <p begin="540960420t" end="600189590t" xml:id="subtitle8">-Some ...
4
votes
5answers
129 views

Multiline Text Processing : Editing sshd_config

I have multiple blocks at the end of my sshd_config files like theses: Match User FOO ChrootDirectory /srv/www/FOO AllowTCPForwarding no X11Forwarding no ForceCommand internal-sftp ...
4
votes
3answers
136 views

Convert /proc/cpuinfo to a JSON in linux bash

I'd like to convert the entire entry of a cat /proc/cpuinfo to a JSON of "key" : "value". Is this possible? I tried to explode the string using \n in hopes that I could get each line and then I could ...
1
vote
1answer
45 views

Insert variable in specific place using sed

Please help me i'm trying to insert variable in a file with sed but has not yet successfully(( I have variable $time and i want insert it in index.html file in specific string(line number 53): the ...
2
votes
4answers
67 views

remove the content from the beginning to the first blank line

I'm trying to remove the content from the beginning of the text to the first blank line. --($:~)-- cat example.txt pedro pablo juan francisco emiliano martin So, I would delete: pedro pablo ...
0
votes
3answers
57 views

Extract value from one file and insert it into another file replacing some other value

I have two files, whose line numbers are not same. But in file1 I want to replace lines taking reference from file2 using sed command. In file1: tid.infno := 72 tid.setnr := 120 (This number 120 is ...
3
votes
6answers
189 views

grep with continuation lines

How can I grep/awk/sed a file looking for some pattern, and print the entire line (including continuation lines if the matched line ends with \? File foo.txt contains: something whatever thisXXX ...
2
votes
4answers
223 views

Using Grep -o or Sed/Awk to Grab Snippet from Middle of String

I am watching log traffic and see regular abuse of the various image search engines, Bing particularly. Example URL: ...
0
votes
2answers
3k views

Fastest & Most Core way to replace “\r\n” with “\n” in a file?

I suppose tr is a more core method and thus probably a faster way to replace things within a given file. However tr can only replace equal amounts of characters. meaning... 2 characters can only be ...
2
votes
3answers
63 views

Delete lines between 2 strings in Solaris

I want to delete all the line between two patterns using basic awk or sed. foo.txt : ---------------------------------------------------------------------- Cap in MB line 2 line 3 line 4 line 5 ...
5
votes
1answer
3k views

Substitute pattern within a file with the content of other file

I have a text file (devel.xml). I added the word REPLACETHIS to it in order to replace this string with the content within a different file (temp.txt). The closest thing I have is this: sed -i -e ...
20
votes
6answers
39k views

SED: insert something to the last line?

The command inserts a tag to the beginning of a file: sed -i "1s/^/<?php /" file How can I insert something to the end of each file with SED?
5
votes
6answers
379 views

sed command to swap characters

My input file layout is: mm/dd/yyyy,hh:mm,other fields I need to format it as: yyyy-mm-dd hh:mm:00,other fields sample input: 01/02/1998,09:30,0.4571,0.4613,0.4529,0.4592,6042175 ...
11
votes
3answers
7k views

What is the purpose of -e in sed command?

I can't find any documentation about the sed -e switch, for simple replace, do I need it? e.g. sed 's/foo/bar/' VS sed -e 's/foo/bar/'
1
vote
0answers
43 views

-e option in sed [duplicate]

I saw someone do this to replace "upon" with "eat" in a text file called oro. sed -i -e "s|upon|eat|" oro Question: what is the purpose of -e option in the above command? I tried with and without ...
17
votes
5answers
57k views

How to strip multipe spaces to one using sed?

sed on AIX is not doing what I think it should. I'm trying to replace multiple spaces with a single space in the output of IOSTAT: # iostat System configuration: lcpu=4 drives=8 paths=2 vdisks=0 ...
1
vote
3answers
143 views

Print previous line after a pattern match using sed?

I want to print previous line,every time a match was found. I know about grep -A and -B options. But my Solaris 5.10 machine doesn't support those options. I want solution using only sed. Foo.txt: ...
2
votes
1answer
49 views

How to output a comparison of values in separate files

With the following two files available with build names and version numbers available: server.txt Build2 200 Build3 100 Build1 400 Build7 200 local.txt Build1 300 Build2 200 Build3 100 In my ...
0
votes
3answers
258 views

How to detect end of line with sed

I'm looking for a way to only execute replacement when the last character is a newline, using sed. For instance: lettersAtEndOfLine is replaced, but this is not: lettersWithCharacterAfter& ...
4
votes
3answers
271 views

Why are these curly braces necessary in sed?

I wanted to do a range limited search in sed so I tried sed -n '195,210 /add/ p' <file> Which gave sed: -e expression #1, char 9: unknown command: `/' Purely as a guess, I tried adding ...
3
votes
7answers
147 views

Printing specific section of a line when a trigger value is present

I'm parsing data in the following format: prop1=value1:prop2=value2:prop3=value3+prop1=value4:prop2=value5 parts of the string are delimited by + properties can appear in any order the desired ...
3
votes
3answers
132 views

To replace % marks but not \% in Perl Regex

I am thinking how you can replace [^\]% marks but not \% marks in the sed -command of this answer. I think look-behind is not necessary. My current Sed command but I think Perl is a must here cat ...
2
votes
2answers
120 views

Remove first n lines from file with variable

The command below works for deleting the first 3 lines: sed -i -e 1,3d t.txt So I tried substituting the 3 with a variable in a script as below NrLines=$(wc -l t.txt) sed -i -e 1,"$NrLines{d}" ...
0
votes
3answers
130 views

Find all words beginning with Q

How do I search a text file and list all the words begining with Q? The file I am searching is Python source code. The closest I have found to a soulution is this question but that is not what I ...
0
votes
2answers
41 views

sed replace ;“ content with ';”

I have files that contain ;" and I need it replaced with ';" The following sed command does not work: sed -i "s/;"/';"/g" /root/bashy.sh How can I do this? The solution doesn't have to be sed.
3
votes
2answers
135 views

how to print field between the double quote

I have the following file conf.txt: perl /home/site/gen.pl "GG - W C1 Test - sai1" "15072" && ssh 13.4.93.103 perl /home/site/gen.pl "GG - W C1 Test - sai2" "15072" && ssh ...
2
votes
2answers
44 views

sed replace after matching character

I have to change a properties file containing the property: ro.product.firmware=0.0.1 with a new value that is coming from a function called in a different section of my bash script. I cannot get ...
1
vote
2answers
44 views

Re-print an array in a certain format?

I wish to take 10 random lines of file, which is 100 lines long. First, I randomly generate 10 integers between 1 and 100 (inclusive) with ind=$(shuf -i 1-100 -n 10 | sort -n) Then, I wish to use ...
3
votes
3answers
106 views

Specific column level substitution

If I have a file with columnar entries, is it possible to substitute specific entries from a specific columns only and save changes to the same file?? Example a file abc.txt: SR|FRUITS|COLOR| ...
1
vote
1answer
55 views

Is it possible to pass arguments to a sed script?

Consider a simple sed script foo-to-bar.sed: s/foo/bar/ and the simple invocation: sed -f foo-to-bar.sed some-file.txt Now, let's say I want to customize the replacement string (bar in this ...
0
votes
1answer
37 views

Move a range of words to the end of the string

I have the following string: "5 S comment=whatever Unspecific text fruit=apple animal=mouse sky=blue" I need to move to end of the string, all that begin with comment to the word text. The start ...
2
votes
2answers
129 views

Delete blank columns

This must be a common problem, but I couldn't find a solution. I have several files which have different sets of columns which are completely blank (for all rows except header) , how can I delete ...
0
votes
3answers
112 views

Concat 1000 files within a directory [closed]

I know we can concat files by cat file [file] [[file] ...] > joined-file. I have directory which contains lots of files. I want to concat all of them. I want to concat 1000 files irrespective of ...
4
votes
5answers
6k views

How to add text to end of line when pattern is matched?

inputs: line1 with the PATTERN that contains ( ) line2 with the PATTERN that contains ( ) lineN with the PATTERN that contains ( ) outputs: line1 with the PATTERN that contains ( ) ; line2 with ...
1
vote
2answers
1k views

Add text to end of every line

I have tried a lot of commands, like this: sed -i '' "s/$/<@string>/" txt.txt > txt2.txt This makes txt2.txt empty, why?!? sed 's/$/<@string>/' txt.txt > txt2.txt This does ...
0
votes
1answer
55 views

Sed: how to replace 0 and :?

sed -i s:group\:\:000::g myfile /usr/local/bin/sed: -e expression #1, char 12: number option to `s' command may not be zero I want to replace the string group::000 with nothing,i tried to escape ...
1
vote
3answers
80 views

Data extraction from text file

I have a text file in the following format:- $DATA1 SOURCE='HSPICE' VERSION='I-2013.12-SP2-1 32-BIT' .TITLE 'cmos inverter transfer characteristics' index t_r t_f ...
1
vote
1answer
41 views

How to filter a basic csv by columns

How do I filter by third column of the following file list.txt [[ list of people ]] billy baxter - @baxter - b.baxter@woods.com james woods - @woods - j.woods@someother.com I currently have cat ...
0
votes
1answer
72 views

Delete customers domain extension only (in .csv file)

I have a list of my customers emails and want to remove some that end in .br for example. I would normally do the following command: sed -i '/.br/d' customers.csv But that would also delete a ...
17
votes
6answers
2k views

How to achieve portability with sed -i (in-place editing)?

I'm writing shell scripts for my server, which is a shared hosting running FreeBSD. I also want to be able to test them locally, on my PC running Linux. Hence, I'm trying to write them in a portable ...
0
votes
3answers
86 views

awk or sed or perl: remove only characters on specific position

I have multiple files to rename leng-1494-001 leng-1464-002 leng-2414-004 leng-7894-005 leng-1323-006 I want to rename it ferr-1494-001 ferr-1464-002 ferr-2414-004 ...
0
votes
2answers
110 views

Print text between two patterns not containing a particular word

I wanted to print some text between two patterns which doesn't contain a particular word input text is HEADER asdf asd asd COW assd TAIL sdfsdfs HEADER asdf asd sdfsd DOG sdfsdfsdf TAIL sdfsdfs ...
2
votes
1answer
63 views

How do I properly escape this long su + sed command?

#!/bin/bash wineuser=tom su $wineuser -c "sed -i '$ialias ptgui "wine ~/.wine/drive_c/Program\ Files/PTGui/PTGui.exe\"' /usr/people/$wineuser/config/cshrc.csh" The acutal line inserted to tom's ...
5
votes
2answers
207 views

Transpose a file, and replace missing values

I have Readings for Names, from Machines and sometimes these readings are replicated. Where a reading was not found, it is left as blank. Name Instrument Rep R1 R2 R3 N1 I1 1 1 2 3 N2 I1 1 1 3 4 ...
2
votes
1answer
36 views

Adding consecutive characters to duplicate words according to order they appear

So I have files like this but for hundreds of different genes per file. >lcl|accession_cds_proteinaccession [gene=dnaA] [protein=description] [protein_id=accession] [location=location] ...
1
vote
2answers
63 views

How to do operation on individual matches in a full line

I have a Verilog line like this: if (i2_0&!(i2_1)) (posedge i0_0 => (o:1'b1))=(0, 0); How can I convert it to a line like: if (i2_0 == 1'b1 & i2_1 == 1'b0) (posedge i0_0 => (o:1'b1))=(0, 0); ...