Request for advise on how to remove control characters in a UNIX file extracted from top command
Hi,
Please excuse for posting new thread on control characters,
I am facing some difficulties in removing the control character from a file extracted from top command,
i am able to see control characters using more command and in vi mode, through cat control characters are not visible
through cat -v i am able to see the control characters.
i tried with sed , tr -dc, od command (not sure how to handle this) nothing worked and thought of reading line by line and removing control characters but not sure how to remove the control characters, Could anyone please advise how to remove the control characters.
below is my file in vi mode having control characters
Hi,
When I do a man and save it into a file, I end up getting a lot of control characters. How can I remove them??
I tried this:
/1,$ s/^H//g
But I get an error saying "no previous regular expression".
Can someone help me with this.
Thanks,
Aravind (5 Replies)
I have a file with millions of records...Before I experiment, I would like to know which one is faster.
Both the commands work absolutely fine on a smaller set of records.
Please advice.
sed 's/^M//g' ${INPUT_FILE} > tmp.txt
mv tmp.txt ${INPUT_FILE}
tr -d "\15" < ${INPUT_FILE} > ... (11 Replies)
Can anyone seem to know how to find out whether a UNIX text file has 'hidden' control characters?
Can I view them using 'vi' by some command line options?
If there are control characters in a text file which are invisible/hidden.. then how do I get rid of them?
Your intelletual answers are... (6 Replies)
Hi,
I have a .xml file in unix. We are passing this file through a xml parser.
But we are getting some control characters from input file and XML parser is failing for the control character in file.Now I am getting following error,
Error at byte 243206625 of file filename_$.xml:
Error... (1 Reply)
There are 10 files present which have Ctlr-M characters appended to each line of all files.
I have a unix script which processes the files in a loop.
And there is an inner loop which processes each line in the file concerned.
#inputFile is a variable which has the file name of the input... (2 Replies)
Hi,
I am using Cygwin.I created a new file and type into it using cat > newfile. When I open this using vi editor, it contains loads of extra control characters.
Whats happening? (1 Reply)
Hi,
My files are showing some control characters in vi editor
^M
^@ and somtimes
^H
I removed ^M with %s/^M//g command
but how to represent ^@ and ^H
e.g. for ^M it is hold ctrl then v and m..
Please help..
I am very new to unix.. (7 Replies)
Hello,
How can I view control and special characters of a text file?. For example, space, tabs, new line chars etc.
Can I use hexdump for it?
Thanks (3 Replies)
Hi Guys,
We receive some huge files on to Linux server. Source system use FTP mechanism to transfer these files on our server. Occasionally one record is getting corrupted while transfer, some control characters are injecting into the file. How to fix this issue ? please advice ?
Sample... (2 Replies)
Discussion started by: srikanth38
2 Replies
LEARN ABOUT REDHAT
mvwins_wstr
curs_ins_wstr(3X)curs_ins_wstr(3X)NAME
ins_wstr, ins_nwstr, wins_wstr, wins_nwstr, mvins_wstr, mvins_nwstr, mvwins_wstr, mvwins_nwstr - insert a wide-character string into a
curses window
SYNOPSIS
#include <curses.h>
int ins_wstr(const wchar_t *wstr);
int ins_nwstr(const wchar_t *wstr, int n);
int wins_wstr(WINDOW *win, const wchar_t *wstr);
int wins_nwstr(WINDOW *win, const wchar_t *wstr, int n);
int mvins_wstr(int y, int x, const wchar_t *wstr);
int mvins_nwstr(int y, int x, const wchar_t *wstr, int n);
int mvwins_wstr(WINDOW *win, int y, int x, const wchar_t *wstr);
int mvwins_nwstr(WINDOW *win, int y, int x, const wchar_t *wstr, int n);
DESCRIPTION
These routines insert a wchar_t character string (as many characters as will fit on the line) before the character under the cursor. All
characters to the right of the cursor are shifted right, with the possibility of the rightmost characters on the line being lost. No wrap-
ping is performed. The cursor position does not change (after moving to y, x, if specified). The four routines with n as the last argu-
ment insert a leading substring of at most n wchar_t characters. If n is less than 1, the entire string is inserted.
If a character in wstr is a tab, newline, carriage return or backspace, the cursor is moved appropriately within the window. A newline
also does a clrtoeol before moving. Tabs are considered to be at every eighth column. If a character in wstr is another control charac-
ter, it is drawn in the ^X notation. Calling win_wch after adding a control character (and moving to it, if necessary) does not return the
control character, but instead returns a character in the ^-representation of the control character.
NOTES
Note that all but wins_nwstr may be macros.
If the first character in the string is a nonspacing character, these functions will fail. XSI does not define what will happen if a non-
spacing character follows a control character.
RETURN VALUES
Upon successful completion, these functions return OK. Otherwise, they return ERR.
SEE ALSO curses(3X), curs_insstr(3X), curs_in_wch(3X), curs_ins_wch(3X).
curs_ins_wstr(3X)