07-16-2008
partial word replacement using sed
Example contents of a file:
001FILE
002FILE
003FILE
099FILE
111FILE
Is it possible to search for [000-111]FILE and still keep the number part of the result in tact? The number portion is a changing variable but the FILE part stays the same. I want to search for all [000-111]FILE and space them out to "001 FILE" "002 FILE" etc.
If I use sed 's/[000-111]FILE/&/g' It will basically replace with the same variable as found in search.
I know how to search for the variable but don't know how to keep a portion of the result. The cut function would be nice but I can't seem to be able to call it in through sed.
Searching for FILE and adding a space is not an option as some of the other contents have the same names and cannot be effected.
Any ideas?
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look(1) General Commands Manual look(1)
NAME
look - Finds lines in a sorted list
SYNOPSIS
look [-df] [-tcharacter] string [file]
The look command prints all lines in a sorted file that begin with string.
OPTIONS
Uses dictionary order; only letters, digits, tabs, and spaces are used in comparisons. Searches without regard to case; treats uppercase
and lowercase as equivalent. Ignores character and characters following it in the search string. If you specify look -tC ABCDE, the
string ABCDE would become (in effect) AB, with CDE being ignored. This option is primarily for shell scripts, in which more than one
string is being processed.
DESCRIPTION
If no file is specified, look searches in the system word list /usr/share/dict/words, with the options -df assumed by default.
The look command uses binary search.
The -d and -f options affect comparisons as in sort.
NOTES
In order to use the -f option, you must first sort file with the sort -f command; otherwise, look displays only lowercase items.
If you do not specify -f, but specify a file (such as /usr/share/dict/words) that has been sorted with sort -f, look may not produce any
output.
EXAMPLES
To search a sorted file called sortfile for all lines that begin with the string as, enter: look as sortfile To search the system word list
for all words beginning with smi, enter: look smi
This might result in: smile smirk smith smithereens Smithfield Smithson smithy smitten
FILES
System word list.
SEE ALSO
Commands: grep(1), sort(1), spell(1)
look(1)