Find & replace code across all files in a folder in Linux - linux

I have been using Notepad++ for Windows when I want to find a certain text across all files in a given folder. This was extremely useful for debugging my MatLab code because one project entails tens of MatLab files.
I could also replace all texts into another across all files in a folder.
I could also replace things like /r/n which means line replacement.
Now I must need to work on a Linux server. Notepad++ couldn't be installed on the university server I am allotted to. And as far as I tried, Sublime Text couldn't find and replace things like /r/n
What option do I have on Linux?

Sublime Text supports replacement of line breaks, but you have to select "regular expression" (Alt+R) and you have to enter the line break correctly (\n, not /r).

The most useful method if find and replace. (Ctrl+H)
However, another possibility is the multiple selection as in the example number one of the official website: https://www.sublimetext.com/
How it works:
You select the word you want to replace, press Ctrl+D (which will select the same word with the same name). Continue pressing Ctrl+D until you selected every word you want to replace.
Once it is done, you will have a multiple selection, which means that every character will be write at each word selected position.
I invite you to check the example on their website, it is a very good illustration.

You can use Kate, it is fine replacement for Notepad++.
Kate "Search and Replace" feature is very powerful.

Related

Visual selection and replacement in vim

How can I select different portions of multiple non-contiguous lines and replace them with the same/different text?
Example: Let's say my buffer looks like this-
Roses are reed,
Violets aree blue,
Sugaar is sweet,
And so are you,
I want to change in 1st line the 3rd word ('reed') to 'red, yellow and green', in 2nd line 'aree' to 'are', in 3rd line 'Sugaar' to 'Sugar and molasses' and in 4th line 'you,' to 'you.'.
Say my cursor is at 'R' of 'Roses'. I want to select all four of these wrongs at once and nothing other the wrongs. After I'm done selecting I want to be able to move to 'reed' by pressing some key (say Ctrl+j), then after changing I want to be able to press some key (say Ctrl+j) and move the next visual selection which is 'aree'.
Is there any plugin that does this?
There are multiple cursors plugins that attempt to create parallel editing functionality seen in other editors to Vim (which is difficult). If I understand your use case right, that wouldn't help here, though, because all places would be edited in the same way (so reed, areee, etc. would all be replaced with the same red).
Instead, what you seem to be asking for, is a way to search for all wrongly spelled words, and then edit them one by one, individually. You can do this with standard search, using regular expression branches:
/reed\|areee\|Sugaar\|you,/
You can then simply press next to go to the next match after you're done. Note that the branches have to be unique (so I searched for you, instead of simply ,). Adding word boundaries (\<reed\> instead of reed) is a good idea, too.
plugin recommendations
multiple cursors is a famous plugin for parallel editing
My SearchAlternatives plugin lets you add the current word under the cursor as a search branch with a quick (<Leader>+ by default) key mapping. (However, if you're already on the word, why not correct it immediately?)
My SpellCheck plugin populates the quickfix list with all misspelled words and locations. You can then use quickfix navigation (e.g. :cnext) to quickly go to each. The plugin also offers mappings to fix spelling errors directly from the quickfix list.

Replace occurrences globally one by one in SublimeText3

Let's say we want to replace "apple" to "banana" in every file in the current project. We can do this with Cmd+Shift+F (Find in Files...) and "Replace" button. But this button replaces all simultaneously. What I want to do is replacing one by one. I know this can be done in a single file with Alt+Cmd+F and "Replace" button.
Is there any ways to do in SublimeText3?
Thank you
You can't replace across multiple files in the same way as you can replace in a single file.
The closest you can get is to use Find in Files, make sure Use Buffer is toggled on, and then use Find to perform the search, a Find Results buffer will open. Now you can use F4 to jump straight to the next results line (Shift+F4 to the previous), but you need to manually move the cursor to the relevant section(s) of the line and make the alterations manually.
When performing replacements across files, if it's not a simple case of replacing all of some text with some other text, I have found it best to use a regex to make sure that only the matches I want changed will get changed. Occasionally, if creating a complex regex, I will end up testing the regex using Find to be certain of what it matches, before then running the same regex with replace.

How do I make commands like cat and less keep tab characters?

Is there a way to make cat, less etc. print tab characters instead of tabs being converted to spaces? I am annoyed by this when I copy code from the terminal to an editor.
I am seeing two problems here.
First, destination editor can covert TAB to number of spaces. Some
editor has default feature to convert TAB to number of spaces. If
you disable this feature TAB character you copied from terminal will
be copied as TAB(instead of space) to an editor.
Windows Notepad++ has similar feature
. If you are using vim, this page will be helpful for
vim tab and space conversion
Another, source file in your case terminal may be representing tab
as spaces, please check that first. You can use cat -t filename to
see if you have any TAB in source file or not. That command will
display TAB character as ^I.
It seems this is not possible with less (see answer to the same question on unix.stackexchange).
As a workaround, it works with cat or, for some minimal paging capabilities, with the more command.

Paste within line in macvim

I started to use macvim not only for code, but also for editing a wiki and academic writing in LaTeX. After several honeymoon moments ;-) and first customization efforts, I found a problem I can't solve:
How do I paste content from the system clipboard within a line, no matter where this content is copied from? (I use LaunchBar’s multi clipboard feature quite excessively and store mostly > 20 strings from different applications I will paste sooner or later. It works well with macvim, but not when it comes to "linewise" content.) p or P create newlines, cmd-v as well.
I neither want to add strings between tags, nor focus on other specialised settings.
I don't know how Launchbar works in this regard but all the clipboard managers I've used send a Cmd-v when you hit Enter.
MacVim, being very well integrated in the system, supports many default Mac OS X shortcuts like Cmd-o, Cmd-s or Cmd-v so… simply selecting the item in Launchbar's list and hitting Enter should work.
If your pasted content ends up on a line of its own (presumably above the current line) instead of in the middle of your sentence that means that the pasted text contains a new line, plain and simple. Because MacVim maps Cmd-v to P, the pasted content is pasted before the cursor: inline if there's no newline in sight, above the current line if there are newlines.
That's normal behavior.
At that point, either you find a way to clean Launchbar's content up before Cmd-v or you edit the pasted text afterward with something like ^v$y"_d<movement>P.
p and P only create new lines if the clipboard contains a newline character.
I just pasted one-line content from my clipboard into vim and it worked fine (in-line).
The issue may be with the way LaunchBar is copying to its clipboards.

reformat in vim for a nice column layout

I have this dataset in a csv file
1.33570301776, 3.61194e-06, 7.24503e-06, -9.91572e-06, 1.25098e-05, 0.0102828, 0.010352, 0.0102677, 0.0103789, 0.00161604, 0.00167978, 0.00159998, 0.00182596, 0.0019804, 0.0133687, 0.010329, 0.00163437, 0.00191202, 0.0134425
1.34538754675, 3.3689e-06, 9.86066e-06, -9.12075e-06, 1.18058e-05, 0.00334344, 0.00342207, 0.00332897, 0.00345504, 0.00165532, 0.00170412, 0.00164234, 0.00441903, 0.00459294, 0.00449357, 0.00339737, 0.00166596, 0.00451926, 0.00455153
1.34808186291, -1.99011e-06, 6.53026e-06, -1.18909e-05, 9.52337e-06, 0.00158065, 0.00166529, 0.0015657, 0.0017022, 0.000740644, 0.00078635, 0.000730052, 0.00219736, 0.00238191, 0.00212762, 0.00163783, 0.000750669, 0.00230171, 0.00217917
As you can see, the numbers are formatted differently and misaligned. Is there a way in vim to quickly align the columns properly, so that the result is this
1.33570301776, 3.61194e-06, 7.24503e-06, -9.91572e-06, 1.25098e-05, 0.0102828, 0.010352, 0.0102677, 0.0103789, 0.00161604, 0.00167978, 0.00159998, 0.00182596, 0.0019804, 0.0133687, 0.010329, 0.00163437, 0.00191202, 0.0134425
1.34538754675, 3.3689e-06, 9.86066e-06, -9.12075e-06, 1.18058e-05, 0.00334344, 0.00342207, 0.00332897, 0.00345504,0.00165532, 0.00170412, 0.00164234, 0.00441903, 0.00459294, 0.00449357, 0.00339737, 0.00166596, 0.00451926, 0.00455153
1.34808186291, -1.99011e-06, 6.53026e-06, -1.18909e-05, 9.52337e-06, 0.00158065, 0.00166529, 0.0015657, 0.0017022, 0.000740644,0.00078635, 0.000730052,0.00219736, 0.00238191, 0.00212762, 0.00163783, 0.000750669,0.00230171, 0.00217917
That would be great to copy and paste sections with ctrl-v. Any hints?
If you're on some kind of UNIX (Linux, etc), you can cheat and filter it through the column(1) command.
:%!column -t
The above will parse on delimiters inside string literals which is wrong, so you will likely need pre-processing steps and specifying the delimiter for this file for example:
%!sed 's/","/\&/' | column -t -s '&'
Sometimes we want to align just two columns. In that case, we don't need any plugins and can use pure Vim functionality like this:
Choose a separator. In OP's post this is a comma, in my example this is =.
Add spaces before/after it. I use s/=/= ...spaces... / in visual selection for this.
Locate to the longest word and place cursor after it.
Remove all the extra whitespace using dw and vertical movement.
Example of this technique demonstrated below:
I don't find myself needing to align things often enough to install another plugin, so this was my preferred way of accomplishing it - especially that it doesn't require much thinking.
As sunny256 suggested, the column command is a great way of doing this on Unix/Linux machines, but if you want to do it in pure Vim (so that it can be used in Windows as well), the easiest way is to install the Align plugin and then do:
:%Align ,
:%s/\(\s\+\),\s/,\1/g
The first line aligns the entries on the commas and the second moves the comma so that it's flush with the preceding value. You may be able to use AlignCtrl to define a custom mapping that does the whole lot in one go, but I can never remember how to use it...
Edit
If you don't mind two spaces between entries and you want to do this in one command, you can also do:
:%Align ,\zs
This is a great answer using vim macros: https://stackoverflow.com/a/8363786/59384 - basically, you start recording a macro, format the first column, stop recording then repeat the macro for all remaining lines.
Copy/pasted from that answer:
qa0f:w100i <Esc>19|dwjq4#a
Note the single space after the 100i, and the <Esc> means "press escape"--don't type "<Esc>" literally.
Translation:
qa -- record macro in hotkey a
0 -- go to beginning of line
f: -- go to first : symbol
w -- go to next non-space character after the symbol
100i <Esc> -- insert 100 spaces
19| -- go to 19th column (value 19 figured out manually)
dw -- delete spaces until : symbol
j -- go to next line
q -- stop recording macro
4#a -- run the macro 4 times (for the remaining 4 lines)
We now also have the fabulous EasyAlign plugin, written by junegunn.
Demonstration GIF from its README:
Also, Tabularize is quite good http://vimcasts.org/episodes/aligning-text-with-tabular-vim/
You could use the csv.vim plugin.
:%ArrangeColumn
However, this will not do exactly what you have asked: it will right adjust the contents of cells, whereas you have your values aligned by the decimal point or by the first digit.
The plugin has many other useful commands for working with CSV files.
also if you have very long columns it can be handy to disable default wrapping
:set nowrap
:%!column -t
(note in debian you also have a further option for column -n which if you want to split multiple adjacent delimiters)
Here’s a pure Vim script answer, no plugins, no macros:
It might be most clear to start out with my problem’s solution as an example. I selected the lines of code I wanted to affect, then used the following command (recall that entering command mode from visual mode automatically prepends the “'<,'>”, so it acts on the visual range):
:'<,'>g``normal / "value<0d>D70|P`
Except I did NOT actually type “<0d>”. You can enter unprintable characters on the command line by pressing ctrl-v, then the key you want to type. “<0d>” is what is rendered on the command line after I typed ‘ctrl-v enter’. Here, it’s parsed by the “normal” command as the exit from “/” search mode. The cursor then jumps to “ value” in the current line.
Then we simply [D]elete the rest of the line, jump to column 70 (or whatever you need in your case), and [P]ut what we just deleted. This does mean we have to determine the width of the widest line, up to our search. If you haven’t put that information in your statusline, you can see the column of the cursor by entering the normal mode command ‘g ctrl-g’. Also note that jumping to a column that doesn’t exist requires the setting 'virtualedit'!
I left the search term for the :g(lobal) command empty, since we used a visual block and wanted to affect every line, but you can leave off using a visual selection (and the “'<,'>”) and put a search term there instead. Or combine a visual selection and a search term to narrow things more finely/easily.
Here’s something I learned recently: if you mess up on a complex command mode command, undo with ‘u’ (if it affected the buffer), then press “q:” to enter a special command history buffer that acts much like a conventional buffer. Edit any line and press enter, and the changed command is entered as a new command. Indispensable if you don’t want to have to stress over formulating everything perfectly the first time.
I just wrote tablign for this purpose. Install with
pip3 install tablign --user
Then simply mark the table in vim and do
:'<,'>:!tablign
Pretty old question, but I've recently availed myself of an excellent vim plugin that enables table formatting either on the fly or after-the-fact (as your use case requires):
https://github.com/dhruvasagar/vim-table-mode
I have this in my .vimrc.
command! CSV set nowrap | %s/,/,|/g | %!column -n -t -s "|"
This aligns the columns while keeping the comma, which may be needed later for correct reading. For example, with Python Pandas read_csv(..., skipinitialspace=True), thanks Pandas guys for this smart option, otherwise in vim %s/,\s\+/,/g. It may be easier if your column has the option --output-separator I guess, my doesn't and I'm not sure why (my man page for column says 2004, on ubuntu 18.04, not sure ubuntu will get a new version). Anyway, this works for me, and comment if you have any suggestions.
I made a cli tool written in Perl.
You can find it here: https://github.com/bas080/colcise

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