All Questions
Tagged with bash text-processing
722 questions
6
votes
2
answers
596
views
How can I extract quoted strings within a variable?
I acknowledge there are superficially similar questions asked here before, but all of those I've seen are simpler than what I'm trying to achieve. Bash-only solutions are preferred.
I have a variable ...
- 223
2
votes
2
answers
969
views
Why is the file changing before being written to?
On Kubuntu Linux, The Google Chrome browser adds a checksum to the file, preventing simply editing the file by hand. So I'm writing a script to add the checksum.
$ cat .config/google-chrome/Default/...
- 16.4k
-2
votes
3
answers
139
views
How to replace two lines containing [tab] chars into one line with just [newline] char, using a bash script?
In a directory I have a bunch of text files. Some of the files contain double lines with a [tab] char only. I want to find and change these two "tabbed lines" into one line with a new line ...
- 21
-5
votes
2
answers
81
views
How to count the no of occurrences of a particular string in a latest log file to read last 5 min data in linux [closed]
I want to capture an error code (e.g. 502) from a log file.
The log file is rollover when it's reached to 100 MB like access.log_126427, access.log_197455, etc. There is no specific pattern of the ...
0
votes
1
answer
115
views
Find all files in directory and apply commands to each of them
I want to apply commands below to all files in a directory instead of one file.
cat file.txt | sed -E "s/\@([0-9]+)\W+~(.*?)/\1 \2/g" | tr -d '~'
cat file.txt | sed -E "s/\@([0-9]+).*\~...
- 103
-1
votes
2
answers
167
views
Finding number of occurences of a word in a PDF file
Inside a folder there are plenty of subfolders and inside the subfolders there are plenty of PDF files. Looks like below:
+- SubfolderA
| +- File1.pdf
| +- File2.pdf
|
+- SubfolderB
| +- File3.pdf
|...
- 29
2
votes
5
answers
531
views
Move line matching string to top of the file
Need to move single line with PRM:TRG keyword to top of the file using sed
File content:
FOOBAR:SCN:NO_TRG
FIZZBAR:SCN:NO_TRG
BEBAR:PRM:TRG
Output expected:
BEBAR:PRM:TRG
FOOBAR:SCN:NO_TRG
FIZZBAR:...
- 131
0
votes
3
answers
102
views
Splitting Words into space separated characters [duplicate]
I have a table with one word in each row. I want to split the word into space separated c h a r a c t e r s. Is there a way to do that via bash command?
If yes, I also have a table with multiple words ...
0
votes
3
answers
88
views
Need to make multiple multiline replacements in file
I have a file with multiple "paragraphs" like this:
<type>TRANS</type>
<attributes/>
<specification_method>rep_name</specification_method>
<trans_object_id/&...
- 11
-1
votes
1
answer
69
views
how to omit/ignore/remove lines starting with local/ using awk
Variable _RESULT contains an output of pacinfo --verbose local/jre.
Using awk script (by Ed Morton - thanks to him!):
awk '{
match($0,/:[[:space:]]*/)
nextTag = substr($0,1,RSTART-1)
...
- 21
0
votes
1
answer
63
views
Append the arguments to a script as lines in a file
How do you append $@ or $* , each as a new line to a file?
I think I already searched for that before.
Adding a new option -i --insert-newline with possible values 1, 2, 3 or Linux, Windows, Mac to ...
- 137
0
votes
1
answer
57
views
Replacing variable correctly in alias function
I'm trying to create an alias function to remove inputted line from file:
function remove_line(){
line_to_remove="'s/^"$1"$//g'"
sed -i $(line_to_remove) my_file
}
...
- 137
-2
votes
1
answer
182
views
Error in command su
I am creating a command that will change a certain line in the /etc/profile file from a script, however in certain versions of Linux the sudo command may not be activated so it would be necessary to ...
user569757
2
votes
7
answers
2k
views
How to remove embedded newlines from CSV fields
I am struggling with processing a file. Normally I should have a line for each host definition. But sometimes, someone split some fields on different lines.
Here is an example:
"host1","...
2
votes
1
answer
87
views
Playing random videos on one's system; minor improvement to include DVDs
In my .bashrc I have a function which I use to play random videos (not written below, just fyi), and another one for all media files, e.g.:
createmediafiles() {
find ~+ -type f -iregex '.*\.\(mp3\|wav\...
- 465