Inserting a non printable character in a file

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Inserting a header with special character

Hi, I am trying to insert header row with a special character delimiter with Unicode u0109 into a file with ‘echo’, header looks like below echo –e “header1\u0109header\u0109header3\u0109header4” It just inserting as it is in the quotes but not the special character, Please suggest if am...

2. Shell Programming and Scripting

Bash - Inserting non printable character(s) in string variable

Hello. I have a string variable named L_TEMP to test a very simple filter. L_TEMP="50AwL.|KWp9jk" I want to insert a non printable character between K and W. I have try this : linux-g65k:~ # a='50AwL.|K' linux-g65k:~ # b='Wp9jk' linux-g65k:~ # L_TEMP="$a$'\x07'$b" linux-g65k:~ # echo...

3. UNIX for Dummies Questions & Answers

How do I make this file readable/printable?

When I do the file I get ELF 32-bit MSB executable SPARC Version 1, dynamically linked, not stripped I am almost 100% sure I was able to print a readable version of this file in the past but I cannot remember how. Is it possible to convert this file into something that can be read and or...

4. Shell Programming and Scripting

[Solved] SED - Bash - Inserting multi Tab character in the command

Hello. I am using : sed -i -e '/�name_script�/a#'"${MY_TAB11}"'# \ #'"${MY_TAB1}"'The Standard way'"${MY_TAB7}"'# \ #'"${MY_TAB1}"'==============='"${MY_TAB7}"'# \ ' "$CUR_FILE" Is there a better way to define "MY_TAB7","MY_TAB11" in other way than : MY_TAB1=$'\t' MY_TAB2=${MY_TAB1}$'\t'...

5. Shell Programming and Scripting

Check whether there is a non printable character in the unix variables

cp $l_options $srcdirfile $destdirfile If i want to check whether there is a non printable character in the variables $l_options $srcdirfile $destdirfile how it can be done?

6. Shell Programming and Scripting

Inserting newline in front of multi-character string

I'm working with a large file with multiple records, each record begins with ISA. The issue is, sometimes ISA is at the start of the line, sometimes it's in the middle of the line. So before I can csplit my main file into multiple records, I have to get each record header onto its own line. ...

7. UNIX for Dummies Questions & Answers

delete non printable characters from file

i have a file which contains non printable characters like enter,escape etc i want to delete them from the file

8. Shell Programming and Scripting

inserting a character between string

i have a file contains like this: i want to create a script that will insert a comma "." after the 10th character so it would be look like this thanks in advance

9. Shell Programming and Scripting

Inserting character in every line

help me, is there any script i can use to insert a single character in every line of the whole file?

10. Shell Programming and Scripting

Inserting a character in a data file

Can some one tell me how I can insert a "|" (pipe) at the 15th column throughout a file? examples: to insert at begining of line i use :g/^/s//\|/ to insert at ene of line i use :g/$/s//\|/ how can i insert at the 15th column position. Thanks in advance

LEARN ABOUT HPUX

inv

vis(1)							      General Commands Manual							    vis(1)

NAME

       vis, inv - make unprintable and non-ASCII characters in a file visible or invisible

SYNOPSIS

       file ...

       file ...

DESCRIPTION

       reads  characters  from	each file in sequence and writes them to the standard output, converting those that are not printable or not ASCII
       into a visible form.  inv performs the inverse function, reading printable characters from each file, returning them  to  non-printable	or
       non-ASCII form, if appropriate, then writing them to standard output;

       Non-printable ASCII characters are represented using C-like escape conventions:
	      backslash
	      backspace
	      escape
	      form-feed
	      new-line
	      carriage return
	      space
	      horizontal tab
	      vertical tab
	      the character whose
		      ASCII code is the 3-digit octal number n.
	      the character whose
		      ASCII code is the 2-digit hexadecimal number n.

       Non-ASCII  single-  or multi-byte characters are examined one byte at a time.  For each byte, if it can be displayed as an ASCII character,
       it is treated as if it is an ASCII character; Otherwise, it is represented in the following conventions:
	      the 8-bit character whose
		      code value is the 3-digit octal number n.
	      the 8-bit character whose
		      code value is the 2-digit hexadecimal number n.

       Space, horizontal-tab, and new-line characters can be treated as printable (and therefore passed unaltered to the output) or  non-printable
       depending  on  the  options  selected.	Backslash,  although printable, is expanded by vis, to a pair of backslashes so that when they are
       passed back through inv, they convert back to a single backslash.

       If no input file is given, or if the argument is encountered, and inv read from the standard input.

   Options
       and recognize the following options:

	      Treat new-line, space, and horizontal tab as non-printable characters.
		      expands them visibly as and rather than passing them directly to the output.  discards these characters, expecting only  the
		      printable  expansions.   New-line  characters  are  inserted  by every 16 bytes so that the output will be in a form that is
		      usable by most editors.

	      Make    and silent about non-existent files, identical input and output, and write errors.  Normally, no input file can be the  same
		      as the output file unless it is a special file.

	      Treat horizontal-tab and space characters as non-printable
		      in the same manner that treats them.

	      Cause output to be unbuffered (byte-by-byte);
		      normally, output is buffered.

	      Cause   output to be in hexadecimal form rather than the default octal form.  Either form is accepted to as input.

EXTERNAL INFLUENCES

   Environment Variables
       determines the language in which messages are displayed.

   International Code Set Support
       Single- and multi-byte character code sets are supported.

WARNINGS

       Redirecting output to an input file destroys the original data.	Therefore, command forms such as

       should be avoided unless the source file can be safely discarded.

AUTHOR

       was developed by HP.

SEE ALSO

       cat(1), echo(1), od(1).

																	    vis(1)

Shell Programming and Scripting