Is there any way to change to the text console scrolling speed without rebooting? Currently using Fedora, but non-distribution-specific answers appreciated. https://www.kernel.org/doc/Documentation/fb/vesafb.txt I'd like to use 'ywrap' in the above documented kernel parameters for vesafb without having to reboot the kernel to try it.

I have a downloaded ebook on my PC that's in Polish, problem is my mp3 that can also display ebooks doesn't have Polish characters so I need a way to edit all the ł, ń, ą, ó etc. into l, n, a, o etc. Is there a way to do this fast?

Let me preface I am not sure if this question has been asked before, I have been Googling for answers but came up short. I want to use standard Linux/Unix commands (running this on FreeBSD) to exclude lines from a log file that match a pattern. The log file also includes "last message repeated x times" to condense log entries. As an example, I want to take this:

May 27 2023 11:07 relevant information #1
May 27 2023 11:07 relevant information #2
May 27 2023 11:08 last message repeated 3 times
May 27 2023 11:08 useless information #1
May 27 2023 11:08 last message repeated 5 times
May 27 2023 11:09 last message repeated 8 times
May 27 2023 11:09 relevant information #3
May 27 2023 11:09 useless information #2
May 27 2023 11:10 useless information #3
May 27 2023 11:10 last message repeated 6 times

And get this output:

May 27 2023 11:07 relevant information #1
May 27 2023 11:07 relevant information #2
May 27 2023 11:08 last message repeated 3 times
May 27 2023 11:09 relevant information #3

I've gotten as far as using sed commands to do this, but I don't know enough about how it works to figure it out. I am especially lost when it comes to the log lines that have multiple "last message repeated" following it. Here's what I'm working with currently:

sed '/useless information/{d;N;/last message repeated/d;}' ./logfile.txt

The above first deletes matching lines containing "useless information", then adds the next line to the namespace with N, and then is supposed to delete the resulting line if it contains "last message repeated". But it is only deleting the lines with "useless information".

I have a file that unfortunately contains both tabs and spaces. How do I display them so I know if a particular space is actually tab or space?

I want to convert a UTF-8 txt file to PDF for printing with CUPS. The problem I'm facing is that all tools I've tried have either failed to format the PDF (resulting in a fully white document with no text) or ignored font options. I have also tried converting my text file to PostScript 1st (as suggested in some previous answers to similar topics) but have faced issues with then printing the PostScript files with the added fonts. What I have tried: text2pdf (creates blank document when custom font specified) unoconv (fails to run with network error) LibreOffice CLI (no font parameters) enscript (initial PostScript conversion works however when then printing that PS or converting it to PDF the font reverts to courier) paps (PostScript conversion succeeds but font parameter seemingly ignored as file is the same regardless of what font you specify or whether or not it exists) pandoc (font options ignored)

My program writes it state to few files every 30 seconds or so (overwrites) and I would like to look at them with the filenames displayed like "more" does. Like: $ echo 1234 > test00 $ echo 5678 > test01 $ ls test00 test01 $ more * :::::::::::::: test00 :::::::::::::: 1234 :::::::::::::: test01 :::::::::::::: 5678 For "more" you have to press space to get next file. * What I want is the filenames before content in some way * I tried "tail", but have to Ctrl+C, Can write a small program but I’m wondering if any standard unix program can do this ( display name of file, followed by content of file ) without further user interaction as with "more"

I used my terminal emulator to run a command and redirect output to a text file on my btrfs. Right after, I did the same with another command. I since deleted the first text file and not the second. I'd like to recover part of the first text: photorec seems overkill but I'm familiar with the tool, using strings seems more suitable but I'm not familiar with this method. How about looking at the actual blocks on the fs: maybe the two files were written sequentially?

I can view a pdf image with text using the evince document viewer, however I cannot select the text in the image to copy and paste. How do I copy text from an image in a pdf file?

I have problem converting a file to PDF. I create the file with echo ęąśćżńł > text and convert: enscript -O text -o - | ps2pdf - out.pdf However, out.pdf has an encoding problem:

I am a Git Bash user who is now switching to Debian. Here was my Git Bash's look: Here is my look on Debian: - My .bashrc file is completely EMPTY. I have nothing in there currently. - I've been researching color in Linux for **hours**. Trust me, I've exhausted my options. - I don't want to use a custom program, download packages, run a script, or use a wrapper for Terminal. I just want my terminal colored how it looks in the GitBash image OR how Command Prompt displays color. - I don't want to change the text background, I want to change my *terminal* background. I personally would like Black, not grey. Thank you.

Is there something like a '[lorem ipsum](http://en.wikipedia.org/wiki/Lorem_ipsum) generator'? I know it exists in Latex, and even in LibreOffice, but I'm looking for a terminal command. I would like to type something like loremipsum 10 >> file1.txt that would give me the first 10 paragraphs of lorem ipsum, each paragraph ended with one LF-character and 1 empty white line between each paragaph. And the output would be redirected to a file called file1.txt in the current directory.

So I understand that a2ps is mostly for converting ASCII code to postscript for printing, but occasionally I like to print a .txt or .md file for school. Often, an entire sentence (or even a paragraph) will be on one line, and a2ps will break the line at whatever character it needs to in order to wrap correctly. This often leaves either awkward half words on a line, or spaces immediately at the beginning of the line. I can't seem to find an option to prevent this hard wrapping in the middle of words (even with --pretty-print). Is there any option to do this, or am I using the incorrect tool for the task?

I need PDF files in text so I can search over them in bulk from commandline. Is there some converter for Ubuntu, OBSD or similar distro? Perhaps related post, OCR with Ubuntu here .

Let's say, I have an input text file (sample_simple.txt) like this: 3 1 10 1 6 9 4 2 4 1 9 2 2 2 1 By using the command: awk '$0=$1" "$1*$2" "$3*$4' sample_simple.txt, I get the following output: 3 3 10 9 36 8 9 18 4 Then using the command: awk '$1*$2" "$3*$4' sample_simple.txt, nothing changes from the input file: 3 1 10 1 6 9 4 2 4 1 9 2 2 2 1 The only change between the commands is '$0=$1', Can anyone explain this?

POSIX defines a text file as "a file that contains characters organized into zero or more lines". However, according to POSIX definition of a line, there are two possible "kinds" of text files with zero lines: - an empty file - a non-empty file consisting solely of a single incomplete line (a line with at least one character and no \n). Is the second case above really considered a text file? Intuitively it's not, as it seems to be nothing more but an edge case. Still, such a file certainly has no lines (as POSIX defines them) because it does not contain a newline character, so it seems to adhere to the current POSIX definition of a text file. The only issue open to interpretation here may be whether such files can be considered "organized into lines", but personally I see no reason against it - nothing in the POSIX definition forces me to treat them otherwise than empty files which, despite being empty (and thus trivially having zero lines), are considered "organized in lines". Perhaps I'm splitting hairs here, but I think the definition, as it currently stands, requires a slight augmentation in order to exclude this case (unless I'm wrong and such files are indeed supposed to match the POSIX definition of a text file). In this thread: https://unix.stackexchange.com/questions/446237/what-conditions-must-be-met-for-a-file-to-be-a-text-file-as-defined-by-posix the OP had similar doubts. In one of replies to his questions someone claimed that "a text file shall not have incomplete lines". While this extra statement would indeed exclude the disputed case, such a restriction does not explicitly appear in the POSIX definition of a text file.

I want to add more terminals to the file /etc/securetty. More specifically I would like to add pts/n, where n is in the range 0-9, if it does not exist. Is this possible through sed command? The following is how the contents of my /etc/securetty are: # Local X displays (allows empty passwords with pam_unix's nullok_secure) pts/0 pts/1 pts/2 pts/3 I tried some thing like: sudo sed '+pts/3+a pts/4' /etc/securetty which gives the following error: sed: -e expression #1, char 3: extra characters after command

On pressing n, Less skips all the search matches in the current line and moves to the next *line* with a match (even if the lines are wrapped). How can I make it move the cursor to all the matches in each line?

Is it possible to use the find command to find all the "non-binary" files in a directory? Here's the problem I'm trying to solve. I've received an archive of files from a windows user. This archive contains source code and image files. Our build system doesn't play nice with files that have windows line endings. I have a command line program (flip -u) that will flip line endings between *nix and windows. So, I'd like to do something like this find . -type f | xargs flip -u However, if this command is run against an image file, or other binary media file, it will corrupt the file. I realize I could build a list of file extensions and filter with that, but I'd rather have something that's not reliant on me keeping that list up to date. So, is there a way to find all the non-binary files in a directory tree? Or is there an alternate solution I should consider?

I have a file that contains a long column and I want to split it into lines, each one with 5 values. E.g., Input file: 1 2 3 4 5 6 7 8 9 10 Output file: 1 2 3 4 5 6 7 8 9 10

I've got a bunch of text files and pdfs in a directory. If I enter evince *.pdf ..all the pdfs open up in separate windows, I do this quite often. When I enter cat *.txt ..was pleasantly surprised to see it shows all the text files in the terminal. Problem is it has them all just laid end to end you can't really tell where one ends and the next one begins or which one you're looking at as you scroll. Is there an improvement to this cat command whereby it will give the name of the file in the terminal before dumping its contents? That's the main point, but perhaps a line or blank space after the text file ended so you would know it had ended would also be nice to have. Otherwise, a better terminal command than cat which accomplishes this.