General :: Bash - Search For A Text Pattern?
Nov 28, 2010I need to search for a string "teststring" in all *.java files coming under /home/user1/ (including subfolders). How can I do it in linux via shell command.
View 5 RepliesI need to search for a string "teststring" in all *.java files coming under /home/user1/ (including subfolders). How can I do it in linux via shell command.
View 5 RepliesI want to search a file for a particular pattern and if pattern found replace the line with new text. i am using awk 'match($0,"pattern") != 0 {print $0} ' filename to check if the pattern exists.how do i get the line number of the pattern and delete that line and replace the line with my new text?
View 1 Replies View RelatedI have to enhance the behaviour of a backup script written in perl. I don't need to change it, what I need to do is to create a bash script that does some checks like file name and file size, execute the backup script then check if the backup files match the original files.Here's how I try to do it:
- read the files from the original files folder
- store them in an array
- search in the array the files that have a specific file extension
- store the file names that match the search pattern (I know the backup script skips some files so I can hardcode the search pattern)
- run the backup script
- read the files from the backup folder
- store them in an array
- compare the original files name and size stored in an array with those from the backup folder
- send a report email
I have 8 files, and each contains around 2000 lines. I want to search the particular word in these files between line number 1500 to 2500.
The output should look like:
sample_1.txt :
1510:declare var testing
sample_2.txt :
1610:declare var testing
sample_7.txt :
1610:declare var testing
sample_10.txt :
1710:declare var testing
Is it possible to use grep for this task?
To search a string pattern in all files in a directory and subdirectories, I am using;
Code:
grep -R "myclass::my-func(" mydirectory/
Now I want grep, to search in only specific file types say *.cc. Please help me. I have read manual of grep, but could not deduce any hint.
Best Regards.
I want to cut out part of the 'uptime' output so all it displays is the load average. In the end I want to cut out everything before the word 'load'. I am a total sed newbie and could really use some examples or links. I've googled and haven't found anything useful yet.##edit###I used the 'cut' command- The code was Code:uptime |cut -d, -f 2,3,4,5 |cut 13-
View 5 Replies View RelatedCurrently, when I'm searching text in files of my PHP project, I use this line :
Code:
grep -r 'myTextToFind' *
But now, I would like to search only in ".lang" files. How can I do that ?
I want to replace a pattern with other pattern in a textfile. But there are two same patterns,but I need two change only the second occurence. EG:
Text file is
aaaa=1
bbbb=2
cccc=3
dddd=4
[code]....
Now I want to change aaaa=x into some other entry.
I have a file called test. It has the following contents.Code:there youI want the output to be.Code:replaced youI am trying to use the sed command to replace every occurance of "hey newline there" with "replaced". I tried the following naive apporach.Code:sed 's/heythere/replace/' testThis gives a result containing the same data as the test file.
View 3 Replies View RelatedJust using shell scripting, how can I insert text into the middle of a file name. The file has a predictable pattern, let's say 3 letters and 3 numbers and I want to insert text in the middle of those 2 patterns. Say ABC123 is the file name. As a result, the file name should be ABC.blah.123
View 2 Replies View RelatedUsing sed, I am trying to append four commas ',,,,' at the end of lines containing the pattern 'Response' in a text file with lines such as these:
6,Pulse,50,254968,14886,NA,,,,
7,Picture,8,265157,0,1,15045,2,0,15000
7,Response,1,271553,6396,1
7,Pulse,50,274969,9812,NA,,,,
8,Picture,1,290232,0,1,15045,2,0,15000
8,Pulse,50,294969,4737,NA,,,,
[Code].....
yes, this is a homework question, but no - I'm not trying to get anyone to do it for me. I think that I am really close, but can't quite get one small aspect to work. in gawk, I want to include a variable name in the search string, but the below code doesn't work.
read -p 'Login name please? ' uLogName
userID=$(gawk -F: '/"$uLogName"/{print $3}' /etc/passwd)
echo $userID
[code]...
Any solution using awk/sed/regexp or other standard linux utility (this is for a mix of RH versions)? I am dealing with some very large application log files. I want to see everything that has been written to the log since the last application restart.
For an example take a log file like this:
Code:
# cat test.log
1 msg
2 msg
3 restart 1
4 msg
5 restart 2
6 msg
The following command is close to what I want:
Code:
# awk '/restart/,G' test.log
3 restart 1
4 msg
5 restart 2
6 msg
But the awk command grabs the first restart not the last. If it was working the way I wanted I would see something like this:
Code:
# awk '/restart/,G' test.log
5 restart 2
6 msg
So, I need something in that search pattern that says look for the last occurrence. I know how to do this with a pipe line - I could reverse the file and then do a similar awk and reverse back, or I could find the number associated with the last restart and then use that in the awk search. But these just take too long because the file is too big.
I'm writing a script that edits a Maya ascii file. Inside the .MA(maya ascii file) there is a line defaultRenderGlobals. My script is supposed to find this line and according to what options they manipulate will update the lines below defaultRenderGlobals. I've got that working... but... the issue i'm having is that defaultRenderGlobals is only made when a the maya scene is made into a batch render. I want my script to manually addefaultRenderGlobals line into the .ma file if its not there and add the certain lines below it.RenderGlobals is already there I want to just manipulate whats below it. Hope this makes sense
View 2 Replies View RelatedI have such a file(test.txt):
abc 123 456
abc 256 145
axd 125 225
[code]...
What would be the best way to search for a file that contains a string similar to this:
View 1 Replies View RelatedI have a html page and I would like to search for the occurance of a given string as an anchor. Then I would like to search backward for a the first match to a given regular expression. As a result I would like to output the text between the two points.
Please note that I would like to have the output up to the first regex match before the ANCHOR point.What is the best tool to solve this?
I have done a bunch of searches on this but the terms seem to get tangled in the more popular search of "colouring the output of grep / awk". I am trying to find a way to grep/awk through the output of a command to find text of a specific colour. The command's output has a range of colours signifying too many different things to specify using text, with colour being the only form of grouping.
View 5 Replies View RelatedI'm writing a bash script to search html files, and when I find any occurrence of an img src tag like this:
<img src="123-picture-normal.jpg" alt="some random user entered text" border="0">
I want to add a second line below it that looks like:
<img src="123-picture-thumbnail.jpg" alt="some random user entered text" border="0">
All I need to do is duplicate the line but replace "normal" with "thumbnail"
Each file can have multiple img src tags with different numbered jpgs.
I have a feeling this is a job for sed, but I'm struggling with it. Any ideas?
Long story short, I got a folder with nearly 800,000 php files. I would like to search each file for a string and if it exists in that file, the file gets copied to another directory. Is this possible from the terminal? So far I got: grep -i -n -r 'ppr-1792' * | cp $1 move_to_here
But this obviously doesn't work. $1 needs to be the file name that contains matching text.
how to search in files text that is one-byte encoding? places - search for files in gnome in ubuntu searches only utf-8 text.i know one way: install wine and total commander, then search with it. what are better ways?[URL]
View 4 Replies View RelatedI have a file called Regions.ini that looks like this:
Code:
[Granite]
RegionUUID = 54ab7cd2-0e70-49b7-8020-8dbeb84c08d0
Location = 9991,10007
InternalAddress = 0.0.0.0
InternalPort = 9001
AllowAlternatePorts = False
ExternalHostName = 71.171.21.9
[Syenite]
RegionUUID = 8fc56fdd-0afd-4074-9432-0ae8f42b799f
Location = 9992,10007
InternalAddress = 0.0.0.0
InternalPort = 9000
AllowAlternatePorts = False
ExternalHostName = 71.171.21.9
What I need to do is find out what the IP address is after "ExternalHostName ="
After that I will need to compare that IP to whatismyip and if it's different then replace it but that is easy to do with sed. I just can't figure this simple hurdle out.
I've got a big text file in which I know have probably made some typos (LaTeX). Sometimes I rewrite sentences several times and then end up with double pieces like "the the" or "is is" without noticing it. Most spell checkers that I can use in LaTeX are very basic so they do not notice these grammar errors. Is there a way that I can search for these repetitions by hand using sed or awk or something along these lines? Is there an app for that?
View 3 Replies View Relatedtotal newb here. call me a script kiddie if you want but here is what i need to do and what i have.
need to:search a hidden log file for a specific string, find what comes after that part, and then output the result to a variable or something that can be used by an application or other script to carry out further actions.
I'm trying to use Bash to search some directories for a word in one of documents. I've tried:
Code:
$ grep -R Brzeninski /media/disk-1/Dual_Data/
but It never returned a prompt, and i'm not sure what grep means or does.
How do I recursively generate a text file which has a list of all files on my server which contain a specific string anywhere in the files?
I know the following command can be used to replace a string recursively
find /var/www -type f -print0 | xargs -0 sed -i 's/old string/new string/g'
I do not want to replace the string, I just want a list of all files which contain the string.
I am using find some_dir -name "*.some_ext" | xargs -l10 grep "some_expr"
to find files in folder, but I just want to display the file name but not all file content. Any solution?
I want to go through a log file and find pattern1 and then a pattern2 only after pattern 1.So for example I want to know howManyRecords was in 13:30.I figured I grep for "start time for the job" and then only after that (and before the next occurence of that) grep for "howManyRecords". Is this a sane way?
View 1 Replies View Relatedi need to add this line nameserver 208.67.122.221 from ISP before the first nameserver already exists in resolv.conf in all workstations i know
Code:
sed '/nameserver/ i
ameserver 208.67.122.221'
but that insert it on every line after nameserver not only before the first one
Code:
# blah blah
# blah blah
domain mydom.com
[code]....
Suppose I have a pair of files containing lists. The first file is called contigs.txt and it contains a list that looks like this:
Code:
Contig822
Contig826
[code]...