09-29-2002
Remove 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
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
using c-shell, does anyone know how to send control characters to the printer before the job?
I need to set a printer to print in condensed mode
HELP (1 Reply)
Discussion started by: mglinsk
1 Replies
2. UNIX for Dummies Questions & Answers
how can i get rid of the control characters , ex. ^M, ^G, in a file?
thanks... (2 Replies)
Discussion started by: apalex
2 Replies
3. Shell Programming and Scripting
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)
Discussion started by: madhunk
11 Replies
4. Shell Programming and Scripting
Hi,
Can anyone help me with controlling the cursor position from a shell script. Things like moving left,right,up,down etc
Anyone have any ideas? (2 Replies)
Discussion started by: ajcannon
2 Replies
5. Shell Programming and Scripting
Can somebody please help me with the query. ?
I want a part of program of which should look for control characters in the flat file , when it finds it, displaying message that Control Characters found..!
Please help me (1 Reply)
Discussion started by: iamnoone
1 Replies
6. Shell Programming and Scripting
Can somebody please help me with the query. ?
I want a part of program of which should look for control characters in the flat file , when it finds it, displaying message that Control Characters found..!
Please help me (13 Replies)
Discussion started by: iamnoone
13 Replies
7. Shell Programming and Scripting
sed -e "s// /g" old.txt > new.txt
While I do know some control characters need to be escaped, can normal characters also be escaped and still work the same way? Basically I do not know all control characters that have a special meaning, for example, ?, ., % have a meaning and have to be escaped... (11 Replies)
Discussion started by: ijustneeda
11 Replies
8. Shell Programming and Scripting
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 ... (8 Replies)
Discussion started by: karthikram
8 Replies
9. UNIX for Dummies Questions & Answers
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)
Discussion started by: prabhat.diwaker
7 Replies
10. Shell Programming and Scripting
Hallo Team,
I am trying to get rid of the dollar sign. I managed to remove all the other special characters but i am struggling with this one.
-bash-3.2$ cat -e missing_revenue_20141112.csv|less|head
BW0522168531211141180935668@196.23.110.141$
BW092218784121114-370120610@196.23.110.141$... (4 Replies)
Discussion started by: kekanap
4 Replies
LEARN ABOUT ULTRIX
re_comp
regex(3) Library Functions Manual regex(3)
Name
re_comp, re_exec - regular expression handler
Syntax
char *re_comp(s)
char *s;
re_exec(s)
char *s;
Description
The subroutine compiles a string into an internal form suitable for pattern matching. The subroutine checks the argument string against
the last string passed to
The subroutine returns 0 if the string s was compiled successfully; otherwise a string containing an error message is returned. If is
passed 0 or a null string, it returns without changing the currently compiled regular expression.
The subroutine returns 1 if the string s matches the last compiled regular expression, 0 if the string s failed to match the last compiled
regular expression, and -1 if the compiled regular expression was invalid (indicating an internal error).
The strings passed to both and may have trailing or embedded newline characters; they are terminated by nulls. The regular expressions
recognized are described in the manual entry for given the above difference.
Diagnostics
The subroutine returns -1 for an internal error.
The subroutine returns one of the following strings if an error occurs:
No previous regular expression
Regular expression too long
unmatched (
missing ]
too many () pairs
unmatched )
See Also
ed(1), ex(1), egrep(1), fgrep(1), grep(1)
regex(3)