All Questions
36 questions
-2
votes
1
answer
172
views
Parse fixed width file and lookup those parsed values against Oracle Db
Files arrive within a specific time window (midnight-0600hrs EST) and get saved to the orders directory on the Linux host. these files are stored in a zip format. usually around 30 files are expected ...
- 1
-1
votes
1
answer
2k
views
Check if there exists filename in directory
I have one file contains people name, like
Sam
Tom
Dad
Jack
I have one directory that contains name.txt or name.zip which file's form is not the same, like
Dad.txt
Tom.zip
Jack.zip
How to find sam ...
- 1
0
votes
1
answer
617
views
Sed Bash script only runs first line of sed
My bash script only runs first line of sed. The command i use to run it:
sed -f sedhw.bash thesbians.txt
Contents of sedhw.bash
s/[0-9]*//g
s/1908/---/g; s/1895/---/g; s/1903/---/g
s/,.*//g
s/^[^&...
3
votes
2
answers
485
views
Remove duplicate lines from files recursively in place but leave one - make lines unique across files
I have many folders and folders contain files. The same line might appear multiple times in single file and/or in multiple files. Files are not sorted. So there are some lines duplicated across ...
- 131
0
votes
2
answers
115
views
Add trailing word to a specific line in file
I have a file contains many lines like this for example
AAA ATAGSGSGS
BBB Thhahahahahs
CCC lmmmmm
DDD GAGAGAGAGA
AAA IIIII
BBB OOOO
CCC YYYYY
...and so on
I want to add specific word i the end of ...
- 103
5
votes
4
answers
3k
views
Counter of unique files in a directory
I ran a program many times with output that was (slightly) non-deterministic. Each time, I printed the output to a file. I now have a directory of many text files (95,034), which probably have ...
- 153
-4
votes
1
answer
515
views
How to read a file line by line then take each line and insert into txt file
I want to read each line of a file and then take each line and produce a file with the lines data in it.
For example let say the file I want to read is named txt.txt and it has the below 4 lines:
...
- 1
5
votes
3
answers
622
views
Add lines to files to make them equal length
I have a bunch of .csv files with N columns and different number of rows (lines). I would like to add as many empty lines ;...; (N semicolons) to make them the same length. I can get the length of the ...
- 333
4
votes
4
answers
706
views
If Else, Awk NR: How to remove a section header of table where there are no entries
I am trying to summarise a table of data that changes everyday. I have already summarised the table to only display rows with entries that are larger than 30.
However, on some days, there are no ...
- 51
0
votes
3
answers
23k
views
Find total of marks for each student in the given file
the file:
Name: Rad
Eng: 94
Tam: 98
Mat: 98
Soc: 98
Sci: 80
Name: Din
Eng: 87
Tam: 89
Mat: 78
Soc: 87
Sci: 34
Name: Hardy
Eng: 78
Tam: 87
Mat: 23
Soc: 34
Sci: 98
the script :
#!/bin/bash
file=$1
num=...
2
votes
4
answers
572
views
Duplicate a file multiple times, write to duplicated files, sort the files, count position of specific lines after sorting
Before I go to more in details, I want to point out that I already asked a certain part of this question -> You can find it here. I received some nice answers, but I need to do more so I'll repeat my ...
- 45
1
vote
4
answers
268
views
split 1200 page document into 500 pages and then the remaining
I am new to the Unix world, and I have text files that contain 1200 pages identified by ^L. Is there an effective way to break of that file to have 2 separate files of 500 pages each and then a 3rd ...
- 33
20
votes
6
answers
8k
views
Running a command on many files
I've got a folder with many files (xyz1, xyz2, all the way up to xyz5025) and I need to run a script on every one of them, getting xyz1.faa, xyz2.faa, and so on as outputs.
The command for a single ...
- 453
1
vote
2
answers
1k
views
Shell command to save list of movies to csv
I am trying to write a one line shell command (bash) to save a list of movies to a CSV file. I am okay with using a script if needed.
My folders are laid out as follows:
-Movies/
--A/
---...
1
vote
1
answer
92
views
Transpose a 3D tensor reprensented by files
I have a 3D tensor of dimension MxNxD data object. And this data object is decomposed and stored in different files.
Initially, each slice/matrix of dimension MxN (first two dimension) is saved in a ...
- 1,735