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0
votes
2answers
116 views

How do I print 'block' letters in the terminal?

How do I echo/print block lettering in the terminal like: ? figlet and toilet don't help. Neither do U+25A0 or U+2588 unicode characters. This is not a duplicate. As I said, figlet, banner and ...
1
vote
0answers
14 views

Can gschem (gEDA) print special characters (aka other than the “micron” symbol µ)?

I prefer to show low resistance values as 2Ω2 rather than 2.2 in my schematics. However when I print schematics and that character occurs, the printed version has a space instead of the omega symbol. ...
1
vote
1answer
46 views

System is no longer outputting UTF-8 characters

I just had an issue with my server where it responded incredibly slowly, so I forced it to reboot over SSH. When I connected back, I found out my system no longer outputs certain characters correctly. ...
2
votes
1answer
52 views

Using accents in Vim seamlessly

Very often I need to write text/program in foreign languages that need accents and special characters in vim, but sometimes it is very hard to get that working. What are the best alternatives to ...
1
vote
2answers
78 views

Shell eating `?` characters

This is such a simple question that I'm sure it's been asked somewhere, but I can't find it. My shell, which I have not intentionally set up to do so, seems to eat any words involving question marks: ...
0
votes
0answers
40 views

Special characters are not recognized even with UTF-8 in KDE

So, I have Manjaro KDE pre 16 and I have some character encoding issues. Characters like ã á and such are not recognised and are represented by the ? sign. And all programs seem to use this encoding ...
0
votes
0answers
54 views

How to search a log file in Linux and escape special characters like square brackets (i.e. [ and ])

How to search a log file in Linux and escape special characters like square brackets (i.e. [ and ]) Can someone point me in the right direction on this? I less the log file as per below: less ...
0
votes
2answers
76 views

Are periods (“.”) valid characters in file or folder names? [closed]

I would like to name my files and folders according to a specific date, e.g. 03.04.2016. I see I can use them but are there any disadvantages to using periods in files or folder names?
3
votes
2answers
100 views

Relations between control characters, signals and terminal

What are the relations between control characters and signals? Or are they unrelated? Are control characters received by a terminal? After a terminal receives a control character, is the terminal ...
1
vote
0answers
33 views

Generating 'ASCII-art' banners with arrows

I recently discovered figlet which generates ASCII-art banners. Joy! ... but, alas, I want a banner with an arrow on it. Now... $ figlet unicode → arrow _ _ //\ ...
0
votes
2answers
49 views

Define string with the characters *, single quote and $

I create bash scripts which get sourced from another "main" script to set up variables needed by the main script. These variables need to be able to contain any character and not have them interpreted ...
11
votes
1answer
164 views

Why is the circumflex/caret character used as a symbol for Ctrl?

I started using the Linux console a long time ago but I never questioned myself about the circumflex aka caret character (^). I'd like to ask why it's used as a replacement for the word Ctrl. I ...
1
vote
1answer
32 views

Escape >');} < / in sed

In 30 files in 30 directories, I want to find: script>');} < /script> and replace it with: script>');} < /script--> What special characters do I need to escape in the find ...
1
vote
3answers
74 views

Trim a specific field and replace in Unix Shell Script

I have a file with below data: 5773|2015-11-19|2016418|O|2015-11-06|C|AB1CD|826|826|CDE|2015-11-19|22222222222222222222222222222|ABCD|AB|30 5773|2015-11-19|2016418|O|2015-11-06|C|AB1CD|826|826|CDE|...
0
votes
1answer
42 views

my home directory appears in my download directory

In my Downloads folder when I run ls I see the home directory, and I don't know why, I want to remove it but I am afraid to remove my home folder. Can anyone tell me how I can just remove the home ...
5
votes
5answers
406 views

Rename folder with odd characters

I have a folder on my Mac called "␀␀␀␀HFS+ Private Data". I'm trying to delete it but it contains a bunch of odd characters that are choking unlink, rm and mv, making it difficult to remove it and ...
3
votes
2answers
53 views

How to interpret ' character in a string passed through SSH

New to BASH and Linux and need some quick help. I have written a quick bash script that asks the user for a username and password from the command line and passes that info to a remote server later ...
1
vote
3answers
219 views

Sed command with ' special character [closed]

I am trying to execute the following command from bash shell: sed -i "s/\(update.*\)where /\1 where primary_id = '$primary_id', /" *.php As you see, there is a variable which I am inserting using ...
3
votes
2answers
60 views

What are these rectangular characters and where is this notation defined

Using Linux (Fedora, specifically) as my primary workstation, I noticed, at times, strange non-printable characters like in the following screenshots (bottom-left in the first image and upper-left in ...
0
votes
1answer
33 views

Listing a file with strange characters on DD-WRT embedded Linux

When SSHing into my DD-WRT router (Buffalo WHR-HP-G54) with embedded Linux to browse the DHCP Lease list I get strange characters: ~ # more /tmp/udhcpd.leases x▒_▒▒ ▒▒iPhone-de-Tomaz▒ ...
3
votes
1answer
33 views

Replace a control character with another control character

A csv file is being generated with a form feed (\f) character. This makes it hard to read in excel, etc. How can I convert the form feed character into a newline (\n) character? All my searches so ...
1
vote
1answer
250 views

bash set variable with colon (:) and dash (-) in it (as used by lftp)

so lftp uses some weird shell variables, like the following: xfer:log-file = 1 sftp:connect-program = “ssh -a -x -i keyfile” how would I set these variables? I've tried using set, and env; as well ...
1
vote
2answers
117 views

Makefile shell ignoring sed regexp end of line

I have a folder for various testing of C code, containing many files named *.c. My aim is to have a Makefile search for any filename ending in .c and add the root of that filename to the targets. ...
6
votes
2answers
723 views

How to display control characters (^C, ^D, ^[, …) differently in the shell

When you type control characters in the shell they get displayed using what is called "caret notation". Escape for example gets written as ^[ in caret notation. I like to customize my bash shell to ...
1
vote
0answers
34 views

“render” textfile with carriage returns (^M) and save output to file

I have a Python CLI program that runs for a long time and has a sort of progressbar, which basically prints some text in the loop without "\n" at the end, at the next iteration it prints "\r" to erase ...
0
votes
3answers
94 views

sed command not replacing a text with newline character

The Unix sed command doesn't recognize a backslash escaped n \n as a newline character. For instance, the command sed "s!,!\n!g" is replacing commas in the input text with the letter n and not a ...
3
votes
2answers
126 views

How can I remove files which contain special characters and Latin-1 characters?

I have 2 files in a directory named App on my Ubuntu mahcine. I want to remove those 2 files completely from that directory, but when I try to remove them using rm -rf, they are not deleted. I can't ...
0
votes
2answers
252 views

How to catch carriage return / line feed in case statement

I tried the following to no avail and couldn't find any documentation. read Option case $Option in [1] ) echo "1" ;; [2] ) echo "2" ;; [$'\n'] ) echo "LF" ;; [0] ) exit ;; * ) ...
3
votes
5answers
423 views

How can I get the raw formatting output of commands?

I'd like to know which control sequences are sent to bash by programs to format their outputs. For example, if I dump man less I can discern which parts are bold or underlined. ...
16
votes
2answers
1k views

What does CTRL+4 (and CTRL+\) do in bash?

I just found out by accident that CTRL + 4 closes programs reading stdin input from the command-line. This is how it looks when I type CTRL + 4 or CTRL + / into programs reading stdin ryvnf:~$ ...
0
votes
2answers
95 views

Putting a single quote in a filename [duplicate]

We can a make a directory named $"dollars"&<>\dogs if we surround it with single quotes like the following mkdir '$"dollars"&<>\dogs' However, what if I want to include a ...
2
votes
2answers
123 views

What other special characters are there?

For filenames, I know that you have to use either a double quotes or a backslash to include a space in your file name. Like mkdir "I like coffee" is the same as mkdir I\ like\ coffee Now when you ...
1
vote
2answers
363 views

How tp Print/echo arrow key in unix - bash, version 3.2.52

How do I print ↑ and ↓ in Unix? Basically I have a script written in bash and I am printing some numbers with whom I want to print arrow keys to show increase/decrease. So how do I literally print ...
3
votes
2answers
8k views

Search and replace control characters (^@, ^M, ^I…) in vi

I copied this line from /proc/some_proc_id/cmdline in my ubuntu machine, java^@-jar^@/usr/lib/selenium/selenium-server-standalone.jar^@-port^@4444^@-trustAllSSLCertificates^@ Somehow, the space ...
2
votes
3answers
500 views

Garbage in bash session log file. (using script command)

I tried to log bash session using: js:/var/tmp # script -aqf /var/tmp/out In out file I see, besides output, a lot of garbage. Instead of just whitespaces and new lines I see this, for example: ...
1
vote
3answers
62 views

Order of text jumbled when printing

We run an automated process which changes the data structure in a file, and it has run for about a year without any issues. It has just started failing and I have narrowed the problem down to one of ...
1
vote
1answer
181 views

TTY control characters sent to stdin of sh doesn't work

I tried to develop a remote app that launches sh and resends an incoming data there, and found that some special sequences don't work. So, for testing purposes, I launched on my desktop sh, then ...
3
votes
2answers
746 views

How to skip special / socket files during rsync transfer?

Using the following command. rsync --archive --delete --partial --progress --recursive --no-links --no-devices --quiet source target Using --no-links and --no-devices already. Getting the error ...
20
votes
5answers
1k views

How can I find the common name for a particular glyph?

Sometimes, I'd like to know the name of a glyph. For example, if I see −, I may want to know if it's a hyphen -, an en-dash –, an em-dash —, or a minus symbol −. Is there a way that I can copy-paste ...
0
votes
2answers
99 views

non-breaking space sometimes appears in Geany (my standard text editor)

I use Geany for all my coding, in my linux Mint-MATE install. Occasionally, i have a problem where a non-breaking space (char code 194) is present instead of a normal space character (32). This just ...
0
votes
3answers
7k views

Remove special characters in a text file

I have a text file which contains in each line a sql query. For each line, I need to remove some special characters. Expl: if I have: select * from Users; insert into Users values ('UR01','Kim','...
1
vote
5answers
116 views

keep out line break

I have some files with this structure: 2015-03-25 17:08:17 sysUpTimeInstance 93474;^M 1.ValueforState=2500 I want to replace the line break, and leave the third line with the second line, I mean, ...
5
votes
1answer
199 views

using ! character in echo

I am messing with echo and having issues with echo displaying the ! character. I tried this. echo -e "Wake!\nUp! bash: !\n!: event not found Then this # echo "Wake\!\nUp!" Wake\! Up! Well now ...
0
votes
2answers
670 views

Why can't I kill the shell using the PID obtained from the $$ special variable? [duplicate]

After I have learned that the $$ special variable holds the process number of the shell, I tried too kill the shell by simply: kill , however this did not work, I also tried some variations, but them ...
1
vote
2answers
485 views

Remove control characters from /var/log/boot.log

I have a script that sends out email to sysadmin group when a server is powered on or off. The email contains dump of some important logs like /var/log/messages, /var/log/secure, /var/log/boot.log . ...
5
votes
1answer
319 views

Representing/quoting NUL on the command line

Can \0 be used on the command line? Background For testing corner cases in GNU Parallel I was curious whether all characters were correctly quoted on the command line. Most of them are: perl -e '...
26
votes
8answers
2k views

Dealing with file names with special first characters (ex. ♫)

I have recently come across a file whose name begins with the character '♫'. I wanted to copy this file, feed it into ffmpeg, and reference it in various other ways in the terminal. I usually auto-...
1
vote
2answers
356 views

How to printf an exclamation point in tcsh?

What's the best way to printf an exclamation point in tcsh? It seems like using single or double quotes has no effect on escaping the exclamation point; and using a backspace does work, but then it ...
4
votes
2answers
1k views

How can I write a non-breaking space? [closed]

When I write a question, I'd like the space between the final word and the question mark to be non-breaking, and this very sentence is an example of it (this is why it is awkward), how can I do that ?
6
votes
2answers
220 views

How many commands can be queued up with control operators?

I have been reading up on control operators, and I was wondering if there was a limit to how many commands you could line up with control operators, such as ||, && and ;. In addition, is ...