Tagged Questions
0
votes
1answer
31 views
Formatting quotes from the fortune to use it with conky
I'm using fortune cookie outputs in my conky script.
My fortune output is in the following format:
Text1 : Some message including( line break tags, e.g. and comma(,),=,semicolon(;) like ...
2
votes
3answers
344 views
dynamic display of a running process?
I am writing a script and acording to that when i run it certain info will be displayed on the output screen.
for example say the constant data displayed is:
my name is mukesh.
i am 27 years old
...
0
votes
4answers
45 views
Create a duplicate record based on a condition
I need to write a shell script where I have to create a duplicate record based on a condition and then change the value in a column of the new row which will be created.
I am trying to create a ...
1
vote
3answers
78 views
how to calculate the average value of the column that have the row ID?
I want to calculate the average value of my data when they have the same ID (in my specific case, the same day but different time in a day). This is meant to calculate the daily average value of my ...
2
votes
3answers
61 views
Using sed to insert latex commands around headers of a document
I have a documen with headers in ALL CAPS, for example:
NAME
env - run a program in a modified environment
and I want to insert
\item[
before the header and
] \hfill \\
after a header ...
1
vote
2answers
38 views
How can I merge multiple lines with spaces (blank line) separating them? [closed]
I'd like to merge the following multiple lines of output so that they form a single line:
line 1:
...
2
votes
4answers
59 views
Adding values of the column that have the same data ID?
I want to prepare a uniform daily data from a mixed daily and sub-daily data by adding the sub-daily values and producing a uniform daily data. My sample input and desired out put data looks like ...
1
vote
2answers
88 views
how to select, copy columns of different file to form new files
I have four files each contain daily station data.
file 1: prec
file 2: minT
file 3: maxT
file 4: wind
Here prec, minT, maxT and wind are files that store values of prec, minT, maxT and wind for ...
1
vote
2answers
70 views
What platform to use for programmatically editing text files? [closed]
I just volunteered at work for a project that involves creating a program to edit log files on a server. By edit I mean extract useful information to another location and remove lines of text that is ...
1
vote
1answer
283 views
Copy multiple files into one (append, merge) in single invocation without shell redirection?
I'm looking for some sort of a command that I can use, to copy/append multiple files into one; but without shell redirection (I'd like to try it in call_usermodehelper, see similar issue in ...
2
votes
3answers
114 views
Help searching in files for regex patterns, recursively, with specialized output
My problem is that I need to:
Find all lines matching regex_pattern in all files (deep search) in a given root directory
For each line that matches, output:
File name
Line number containing the ...
23
votes
7answers
29k views
Looping through files with spaces in the names?
I wrote the following script to diff the outputs of two directores with all the same files in them as such:
#!/bin/bash
for file in `find . -name "*.csv"`
do
echo "file = $file";
diff ...
2
votes
2answers
76 views
Scripting to domain allocation to server
I have two text files:
file #1: domain.txt
cocacola.com
airtel.com
pepsi.com
file #2: servers.txt
192.0.53.42 , 4 # 4 domains already allocated on server 192.0.53.42
192.53.1.2 , 1 # 1 ...
3
votes
1answer
53 views
How to edit files in-place while performing operation on the values matching the searched pattern?
Given a list files containing random text and many datetimes in ISO format in it (e.g "2012-07-02T10:47:24+02:00"), how can I find all these datetimes and add 2 hours to each one ?
Ideally a solution ...
0
votes
1answer
511 views
How can I find and filter a specific column in a .csv file? [duplicate]
I have .csv files with the following structure:
cat,dog,mouse,pig,bird,cow,...
21,34,54,566,78,1,...
23,10,12,569,56,4,...
32,20,13,123,56,3,...
34,30,44,322,66,2,...
I want to filter the column ...
3
votes
2answers
109 views
Comparing two columns with two columns
I have a file that I need to compare the values in two columns with another two columns. For examples:
Item A B C D
1 201 3101 3101 201
2 3101 201 202 3101
3 3101 201 ...
2
votes
5answers
1k views
How can I split a text file into multiple text files using Perl?
I have a file ABC_TabDelim.txt that contains the following:
00:00:00:00 00:00:05:00 01SC_001.jpg
00:00:14:29 00:00:19:29 01SC_002.jpg
00:01:07:20 00:01:12:20 01SC_003.jpg
00:00:00:00 00:00:03:25 ...
1
vote
1answer
318 views
How to match 2 large file and print the difference in shell script
I have 2 files.
File1 has 400k numerical records.
e.g:
1
2
3
4
5
6
.. and so on
File 2 also has 420k numerical records.
e.g:
1
2
3
4
6
.. and so on
Both these file are in unsorted manner. I want ...
2
votes
2answers
508 views
System calls, AWK, and Bringing in external inputs
awk '{ TEMPVAR="/usr/bin"; printf("%s", system("ls $TEMPVAR")); }' empty
In this example I'm trying to bring in the variable TEMPVAR into the system call. How would I do this?
What I'm aiming to ...
18
votes
1answer
586 views
How to implement a horizontal cat? [duplicate]
Standard cat concatenates files line by line (row by row, if you will). I find myself needing a horizontal cat command more and more often recently; i.e. a command that takes a list of files and ...
2
votes
2answers
268 views
How to traverse a file and extract words using their index?
The given file must not be stored in variable and then traversed due to memory size restrictions:
Example:
var=$(cat FILE)
for i in $var
do
echo $i
done
How do you traverse all strings in a file ...
2
votes
1answer
349 views
intersection of two files according to the first column
I have two files
in file A, there are sequence_numbers
in the other file B, there are many columns, and the first column is sequnce numbers,
I want to get a files with all the lines in the B with the ...
1
vote
1answer
112 views
Using join with two files fails on larger file sizes
I am having some issues with a script that is using join to join two files. Eaxmple input files contains lines like this:
Here are the input file and the output of the join command:
...
3
votes
3answers
216 views
How to make and apply (patch) one side diff?
I want to make a shell script that updates a config file.
The file present on the server has information, like various IP addresses.
The new file has more code, from new configs added to the system, ...
9
votes
6answers
671 views
Text Manipulation Across multiple lines
I Have a file that has text like this:
AAAA
BBBB
CCCC
DDDD
1234
5678
9012
3456
EEEE
7890
etc...
And i want to match up the Alphabetic lines with the Numeric lines so they are like this:
...
1
vote
3answers
470 views
To list out duplicate filenames in a listing?
bash-3.00$ cat f.txt
-rw-r--r-- 1 mukesh other 102 Nov 5 18:32 f1.txt
-rw-r--r-- 1 mukesh other 19 Nov 5 18:32 f2.txt
-rw-r--r-- 1 mukesh other 204 Nov 5 18:32 ...
0
votes
1answer
294 views
Making a simple PHP script process text in a pipe
Last week I wanted to convert some simplified Chinese characters into traditional ones. I found a deceptively nice looking shell one-liner, which today I found out was 20% error prone.
So I did some ...
2
votes
2answers
241 views
Comparing files and their properties
I get information of a certain set of files in my mail every day, which looks like this:
58623208 Sep 14 20:08 blbn_blfbe_drv
57904920 Sep 14 19:54 blbn_cycmn
55814208 Sep 14 06:02 clsa_Upd
38912000 ...
3
votes
1answer
153 views
Help improving my AWK skills
This program works as I intended but I feel like I used some clumsy methods to get the out put I desired(especially with my use of print commands and variable declarations)
Could some one improve ...
4
votes
2answers
598 views
How to do a text replacement in a big folder hierarchy?
I want to search and replace some text in a large set of files excluding some instances. For each line, I want a prompt asking me if I need to replace that line or not.
Something similar to vim's ...
3
votes
4answers
800 views
Replacing text from a list of replacements. Added complication: backslashes
I have a file A that contains pairs of strings, one per line:
\old1 \new1
\old2 \new2
.....
I would like to iterate over file A, and for each line perform the replacement (e.g. "\old1 -> \new1") ...
3
votes
6answers
3k views
get numeric ASCII value for a character
I'm trying to write a shell script which asks for an ASCII character in the range A-Z or a-z and returns its equivalent numerical value. For example, the output might look like the following:
...