Sed is known as a Stream Editor in that it can carry out various filtering and/or transforming functions on standard input or on user specified files.

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45 views

Using Ubuntu command line to replace text in huge file

I have a huge XML file that I must work with. Right now the file is only 1 line that contains about 2 million characters which represent 30,000 records. There are no carriage returns or linefeeds ...
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4answers
501 views

how to delete line numbers in a code block?

Generally codes published in web pages contains line numbers. When I copy and paste code into text editor (though some text editors remove line numbers automatically, but somtimes it doesn't work), it ...
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3answers
39 views

How can I replace all the characters from a string?

I have the following string signaldate signaltime period UwThiSon3dH140__mean UwThiSon3dH140__sigma I tried to use sed to replace the space with comma. sed 's/ /,/g' sed 's/[[:space:]]/,/g' but ...
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1answer
38 views

Linux : Data extraction from text file

I have a text file in which thousands of data is there. eg. id=row_value profile=row_value name=row_value email=row_value address=row_value id=row_value2 profile=row_value2 name=row_value2 ...
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1answer
45 views

Can I use a Bash variable in a sed command?

I'm trying to execute a sed command with "-n" option. for i in 1 2 3 4 5 ; do maas maas nodes list | grep hostname | cut -d\" -f4 | sed -n '$ip'; done I want it to run sed -n '1p' then sed -n '2p' ...
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1answer
107 views

sed “Permission denied” and “No such file or directory” errors while building Clockwordmod

Whenever I execute the command build/tools/device/mkvendor.sh samsung_aegis2vzw /your/path/to/the/boot.img I get this as the output build/tools/device/mkvendor.sh: line 83: /sedcommand: ...
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3answers
145 views

How can we remove text from start to some particular selected word using sed command in linux

I have a simple query related to selection and replacing text in linux. For explaning question I am using sed command. I have following text. hello world, I am just simple text for display. Now ...
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0answers
59 views

sed fix for BusyBox - boot fail unable to mount LVM

BusyBox why u no vi?! Summary: Ubuntu 14.04 Server after upgrade first boot, only boots to BusyBox v1.21.1 initramfs with "gave up waiting for root device" due to missing /dev/mapper/xxx-root as ...
3
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1answer
252 views

Delete the whole line starting with a special character except for the first word

I have very recently started using linux and I am almost completely oblivious on sed commands. I need to edit a file that contains a bunch of long lines starting with the common character ">" and ...
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3answers
66 views

sed replace text containing new line

I have a bash script for installing a web server on my Ubuntu server. I'd like, in the /etc/apache2/apache2.conf, to replace #ServerRoot "/etc/apache2" # by #ServerRoot "/etc/apache2" ...
2
votes
1answer
62 views

Trying to use GNU Parallel with sed

Why does this line do nothing? I'm trying to run a "sed" command in parallel and it outputs nothing to "standard.txt" $Filetemp = the file I'm stream editing standard.txt = the file I'm outputting ...
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2answers
47 views

Regular expression

I have a code that is looking for a specific pattern in my log files. Usually it begins with Association ID = (This is what I am looking for in parenthesis). Now the code I have made so far is ...
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2answers
185 views

Piping with Moreutils ts

I have an incoming stream at a serial port, with new lines appearing about once per second wren@Raven:~$ cat /dev/ttyUSB0 A_Sensor1,B_22.00,C_50.00 A_Sensor1,B_22.00,C_50.00 ...
4
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2answers
222 views

What is the meaning of :a;$!N; in a sed command?

$ (echo hello; echo there) | sed ':a;$!N;s/\n/string/;ta' hellostringthere Above sed command replaces new line character with the string "string". But I don't know the meaning of ...
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2answers
112 views

Extract full link of a div element

I'm downloading episodes from a series, but I'm tired for joining in the site, copying the link and downloading it for each episode. First, I join in the site and I get the HTML code. The code is ...
0
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2answers
57 views

How this command works

i see this command on other forums as a question for registering "date -u +%V$(uname)|sha256sum|sed 's/\W//g'" i think it depends on the time of my PC witch change every second .. but the output ...
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2answers
141 views

How to use sed to substitute current date?

How do I use sed to substitute date by a word. I tried doing this: tmp=`date +%d` echo $tmp if [ $tmp -lt 10 ] then pat="d" echo $pat else pat="dd" echo $pat fi cal | ...
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3answers
83 views

Forming IPAddresses from Text file

I have a huge text file that contains IP addresses scrambled all over but not in one unit for example. So what the@192@ heck are you doing@168@ in my house @10@.you were not @16@ supposed to be ...
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3answers
428 views

Remove quotes around integers in a csv file

In a large (>1 gb) csv file I have something like "34432", "name", "0", "very long description" but instead of that I'd like to have 34432, "name", 0, "very long description". I was looking at ...
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1answer
145 views

How to copy a part of a line to another position

I have about 100 print statements in a file like this: printf("%f \n\n",row1.req_pnttime); I want to copy the variable name inside the string so that it becomes like this ...
0
votes
3answers
470 views

How do I replace content of XML file by using shell scripting sed command?

I have a config.xml file which shows: <userid>myUserId</userid> <password>myPass</password> How can I replace myUserId and myPass by using sed?
2
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1answer
365 views

using Sed to search and replace text in XML file

I have the following text in File.XML: <!--UpdateAccountGUIDs>UpdateAndExit</UpdateAccountGUIDs--> I would like to replace that with ...
4
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2answers
134 views

Using Regex Breaking a text on the last digit using linux tools like sed, or awk

I have the following list that I want to break on the digit. For example: From: 103Ru 103mRh 104 1041 To: 103 Ru 103 mRh 104 1041 I would like to use Regx with sed or maybe awk in order to ...
2
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1answer
46 views

Filtering a line with sed

I have a file with columns of the form number_number number columns of numbers I want to extract the columns beginning with particular numbers. I tried the following, but get nothing in output: ...
2
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5answers
260 views

Help to build this expression using sed

I have a text file and I need to get rid off the entire information just before the = symbol in each line, for example: The line: File 1515 = foo.txt needs to look like this: =foo.txt So, I had ...
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2answers
328 views

sed not found but already installed [closed]

I'm using Ubuntu 13.04. I'm trying to install ptxdist-2011.11.0 and when I run ./configure, it says it doesn't find a sed version: checking sed version... configure: error: we need at least GNU ...
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2answers
66 views

Help about sed command

A Linux textbook covering sed command gives me an example as follow: sed -e 's/\(<[^ ]*>\)\([ ]*\)\(<[^ ]*>\)/\3\2\1/g' GNU Linux is cool Linux GNU cool is but while I typing exactly ...
3
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2answers
156 views

How to make sed works with break lines from file?

I'm adapting this script to insert file's content into another file. This is what I have now: #!/bin/sh # Check if first and second parameters exist if [ ! -z "$2" ]; then STRING=$(cat $1) # ...
0
votes
1answer
35 views

Count length of letter string

I have a file that look like that (DNA sequence in fasta format): >sequence_name1 ATCGTGATNNNNNNNNAGTCGATCGGATTCT >sequence_name2 NNNNATGTNNATGTCCNNNNNNN I want to count the length of gaps, ...
0
votes
1answer
152 views

sed, grep, and awk file sorting

I'm trying to get all the files which have 'load' in their names from a directory. I'm trying to do: find -type f | sed -s 'load However, I recurrently receive an error sed: -e expression #1, char ...
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1answer
510 views

Bash script, cannote replace string in a file with escaped $ and &

I have creatd a shell script which takes a string as input. If the string contains '$' or '&', then I need to raplace those characters with '\$' and '\&'. I could done that with sed command. ...
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2answers
1k views

How to sed and replace string with a folder path

I am trying to write the following bash script: HOME_DIR=/opt/my_home find ./CONFIG -type f -exec sed -i "s/_HOME_DIR_/$_HOME_DIR/g" {} \; The line that I want to be changed in the files is this: ...
4
votes
1answer
523 views

Convert all letters to uppercase in all text files from a directory

I have a lot of text files (with .txt extension) in one directory in which I want to convert all letters to uppercase. How can I do this using the terminal? I've tried: sed -i 's/[A-Z]/[a-z]/g' ...
1
vote
1answer
326 views

what this command do ? ls /usr/bin | grep ”man” | sed ”s/man/###/”?

I have a question I want to know what this command do ls /usr/bin | grep ”man” | sed ”s/man/###/” I have use this command and show me everything with ###, but I dont know whats mean. I hope ...
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2answers
261 views

Remove all lines that start with a hash from a list

For a simple example say I have list file which has the following contents cat dog pig dog hat cat clap sing king ca cat hog plate plate one two three cat I then have a 'pattern' file. With the ...
0
votes
1answer
481 views

How to replace strings in file without regex?

I need to replace some strings in files (from command line) but I don't want to use sed -i because my string contains lots of funny characters which need to be correctly escaped. Is there a way to ...
1
vote
1answer
145 views

How to sed two words in a line and add before and after?

I was curious to know if there is a better way to sed two words and add a line before and after them. I learned how from grymoire but I wanted to know if there was a better way to do: #!/bin/sh ...
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2answers
122 views

sed problem with scripting

I am trying to run a script using sed i runing like this for et in 1 # 2 3 do if [ -d ET$et ]; then rm -rf ET$et; fi mkdir ET$et cd ET$et cp ...
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votes
2answers
102 views

Reading a file line by line

I have a file that looks like: @ATDGGSGDTSG NTCCCCC + nddhdhnadn @ATDGGSGDTSG NTCCCCC + nddhdhnadn Now its a repeating pattern of "4" lines and I every time want to print only the 2nd line i.e. the ...
0
votes
1answer
37 views

Formatting a file to use it with fortune in the terminal

I have a big text file with 'Terms' and its 'Definition' separated by spaces(variable). I want to use it in fortune cookie format. Current file format: **term1** this is my definition with ...
1
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1answer
248 views

How to use sed with this complex expression of special chars and ips?

How to use sed to replace for example this expression: connection = sqllite///keystone@10.10.10.51 with this expression connection = mysql://keystoneUser:keystonePass@10.10.10.51/keystone
1
vote
5answers
2k views

How to remove special 'M-BM-' character with sed

File: https://dl.dropboxusercontent.com/u/32919746/file I have file that was created by copying content from DOCX document with LibreOffice into text file. I have modified file with sed to remove ...
0
votes
2answers
172 views

How to get sed to substitute for all but one character

I have a statement of the form atPhysAddress[1][1.10.0.0.98] i would like to remove all details except for the first one in the second bracket, or whichever value falls there, how can i achieve ...
6
votes
3answers
13k views

Sed substitute through a sentence on multiple lines

I am new to using sed but I have been experimenting sed's s/..../..../ (substitute) to modify a full sentence if it's on one line but I am unaware an alternative solution on how to modify a sentence ...
3
votes
2answers
200 views

How to batch organize files?

I have a directory with gigabytes (about 8gb) of small individual files. I want to organize them into directories by date. The date it was created is part of the filename. Here is an example of a ...
0
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1answer
311 views

search and replace inconsistency between vim and sed

Using the Ubuntu 12.04 and vim 2.22.0, why inside the vim I shall use: :9s/\d\+/1/ to change first digit of the mentioned line to 1, but couldn't be able to use the same with sed as : sed -i ...
1
vote
2answers
2k views

sed command replace text with ' character

I have an very big sql file that I cant open in a gui editor. I need to replace the string 'user1'@'localhost' (note the ` character) by 'user2'@'localhost' but i am having troubles finding the ...
0
votes
1answer
38 views

Detecting the fault in my sed command

I am creating a command to replace all instances of ; f. to , (frequent). . So i wrote sed -i 's:;[:space:]f.:,[:space:](frequent).:g' with out any change then i wrote sed -i 's:; f.:, (frequent).:g' ...
2
votes
2answers
780 views

What is sed and what is it used for?

I've been seeing a lot of sed lately, and I find it to be a rather confusing command. The manpages weren't particularly helpful, but I do know that it can be used for parsing the output of other ...
1
vote
1answer
508 views

Tell sed to make changes but those starting with a specific string in 8th to last line

Here again with another problem with sed. As the title says, I want sed to change lines starting at the 8th line to the end, but only lines which start with <b>. I have code all ready and ...