How do I concatenate files 3 files in vi with a blank line after every file's content?
Also :set number does not save changes. I want to set numbers permanently for a file. How can I do that?
Look for a commandline option and use that. cat -n adds numbers, when you like that format, and you are editing a file that has been saved, use
:% !cat -n %
Related
My file extension is CSV file looks below format in unix server.
"Product_Package_Map_10302017.csv","451","2017-10-30 05:02:26"
"Targeting_10302017.csv","13","2017-10-30 05:02:26",
"Targeting_Options_10302017.csv","42","2017-10-30 05:02:27"
I want to delete a particular line based on filename keyword.
You can use grep -v:
grep -v '^"Product_Package_Map_10302017.csv"' file > file.filtered
'^"Product_Package_Map_10302017.csv"' matches the string "Product_Package_Map_10302017.csv" exactly at the line beginning
or sed can do it in-place:
sed -i '/^"Product_Package_Map_10302017.csv"/d' file
See this related post for other alternatives:
Delete lines in a text file that contain a specific string
See this previous question. A grep-based answer would be my first choice but, as you can see, there are many ways to address this one!
(Would have just commented, but my 'rep' is not yet high enough)
I have a text file containing around 500 lines. Each line is an absolute path to a file. I want to delete these files using a script.
There's a suggestion here but my files have spaces in them. They have been treated with \ to escape the space but it still doesn't work. There is discussion on that thread about problems with white spaces but no solutions.
I can't simply use the find command as that won't give me the precise result, I need to use the list (which was created by running find and editing out the discrepancies).
Edit: some context. I noticed that iTunes has re-downloaded and copied multiple songs and put them in the same directory as the original songs, e.g., inside a particular album directory is '01 This Song.aac' and '01 This Song 1.aac'.
I ran a find to produce a text file with all songs matching "* 1.*" to get songs ending in 1 but of any file type. I ran this in my iTunes Media/Music directory.
Some of these songs included in the file had the number 1 in but weren't actually duplicates (victims of circumstance), so I manually deleted them.
The file I am left with is around 500 lines with songs all including spaces in the filenames. Because it's an iTunes issue, there are just a few songs in one directory, then more in another, then another, and so on -- I can't just run a script on a single directory, it has to work recursively and run only on the files named in my list.txt
As you would expect, the trick is to get the quoting right:
while read line; do rm "$line"; done < filename
To remove the file which name has spaces you can just wrap the whole path in quotes.
And to delete the list of files I would recommend to change each line of your file so that it looks like rm call. The fastest way is to use sed. So if your file is in following format:
/home/path/file name.asd
/opt/some/string/another name.wasd
...
The oneliner for that would be something like this:
sed -e 's/^/rm -f "/' file.txt | sed -e 's/$/" ;/' > newfile.sh
First sed replaces beginning of the line with rm -f ", second sed end of the line with " ;.
It would produce file with following content:
rm -rf "/home/path/file name.asd" ;
rm -rf "/opt/some/string/another name.wasd" ;
...
So you can just execute this file as a bash script.
Can u pls advise the unix command as I have a file which contain the records in the below format
333434
435435
435443
434543
343536
Now the total line count is 89380 , now i want to create a seprate
I am trying to split my large big file into small bits using the line numbers. For example my file has 89380 lines and i would like to divide this into small files wach of which has 1000 lines.
could you please advise unix command to achieve this
can unix split command can be used here..!!
Use split
Syntax split [options] filename prefix
Replace filename with the name of the large file you wish to split. Replace prefix with the name you wish to give the small output files. You can exclude [options], or replace it with either of the following:
-l linenumber
-b bytes
If you use the -l (a lowercase L) option, replace linenumber with the number of lines you'd like in each of the smaller files (the default is 1,000). If you use the -b option, replace bytes with the number of bytes you'd like in each of the smaller files.
The split command will give each output file it creates the name prefix with an extension tacked to the end that indicates its order. By default, the split command adds aa to the first output file, proceeding through the alphabet to zz for subsequent files. If you do not specify a prefix, most systems use x .
Example1:
split myfile
This will output three 1000-line files: xaa, xab, and xac.
Example2:
split -l 500 myfile segment
This will output six 500-line files: segmentaa, segmentab, segmentac, segmentad, segmentae, and segmentaf.
Example3:
Assume myfile is a 160KB file:
split -b 40k myfile segment
This will output four 40KB files: segmentaa, segmentab, segmentac, and segmentad.
You can use the --lines switch or its short form -l
split --lines=1000 input_file_name output_file_prefix
I think you can use sed command.
you can use sed -n "1, 1000p" yourfile > outputfile to get line 1 to line 1000.
I want to be able to see all lines of text in a file, originally i only needed the top of the file and had been using
head -n 50 'filename.txt'
I could just do head -n 1000 as most files contain less than this but would prefer a bettr alternative
Have you considered the use of a text editor. These are often times installed by default on *nix systems? Vi is usually available.
vi filename
nano filename
or
pico filename
In the KornShell (ksh) on AIX UNIX Version 5.3 with the editor mode set to vi using:
set -o vi
What are the key-strokes at the shell command line to autocomplete a file or directory name?
ESC\ works fine on AIX4.2 at least. One thing I noticed is that it only autocompletes to the unique part of the file name.
So if you have the files x.txt, x171go and x171stop, the following will happen:
Press keys: Command line is:
x x
<ESC>\ x
1 x1
<ESC>\ x171
g<ESC>\ x171go
Extending the other answers: <ESC>* will list all matching files on the command line. Then you can use the standard vi editing commands to remove the ones you don't care about. So to add to the above table:
<ESC><shift-8> x.txt x171 x171go
Then use backspace to go get rid of the last two, or hit <ESC> again and use the h or b to go backwards and dw to delete the ones you don't want.