06-20-2011
deleting words in list with more than 2 identical adjacent characters
Morning Guys & Gals,
I am trying to figure out a way to remove lines from a file that have more than
2 identical characters in sequence..
So if for instance the list would look like ;
Quote:
abcdefghij
aabcdefghi
aaabcdefgh
aaaabbcdef
suuuperman
suupermaan
alpha00112
alpha00011
the output would be ;
Quote:
abcdefghij
aabcdefghi
suupermaan
alpha00112
I can't seem to get my head around perl (among many other things..) so if
possible would appreciate feedback on using sed or awk as well on the above.
Any help greatly appreciated !
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LEARN ABOUT MOJAVE
lessecho
LESSECHO(1) General Commands Manual LESSECHO(1)
NAME
lessecho - expand metacharacters
SYNOPSIS
lessecho [-ox] [-cx] [-pn] [-dn] [-mx] [-nn] [-ex] [-a] file ...
DESCRIPTION
lessecho is a program that simply echos its arguments on standard output. But any metacharacter in the output is preceded by an "escape"
character, which by default is a backslash.
OPTIONS
A summary of options is included below.
-ex Specifies "x", rather than backslash, to be the escape char for metachars. If x is "-", no escape char is used and arguments con-
taining metachars are surrounded by quotes instead.
-ox Specifies "x", rather than double-quote, to be the open quote character, which is used if the -e- option is specified.
-cx Specifies "x" to be the close quote character.
-pn Specifies "n" to be the open quote character, as an integer.
-dn Specifies "n" to be the close quote character, as an integer.
-mx Specifies "x" to be a metachar. By default, no characters are considered metachars.
-nn Specifies "n" to be a metachar, as an integer.
-fn Specifies "n" to be the escape char for metachars, as an integer.
-a Specifies that all arguments are to be quoted. The default is that only arguments containing metacharacters are quoted
SEE ALSO
less(1)
AUTHOR
This manual page was written by Thomas Schoepf <schoepf@debian.org>, for the Debian GNU/Linux system (but may be used by others).
Send bug reports or comments to bug-less@gnu.org.
Version 487: 25 Oct 2016 LESSECHO(1)