How can I replace the lines that start with a star and replace it with numbers start from 1?


 
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Top Forums UNIX for Dummies Questions & Answers How can I replace the lines that start with a star and replace it with numbers start from 1?
# 8  
Old 11-10-2014
No, the most recent line would be echo "$line" > file_new.txt within the loop.
Like the entire loop gets the stdin from file.txt, the entire stdout goes to file_new.txt.
Or in other words, when the loop is set up, file.txt is opened once for reading and file_new.txt is opened once for writing.
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lreplace(n)						       Tcl Built-In Commands						       lreplace(n)

__________________________________________________________________________________________________________________________________________________

NAME
lreplace - Replace elements in a list with new elements SYNOPSIS
lreplace list first last ?element element ...? _________________________________________________________________ DESCRIPTION
lreplace returns a new list formed by replacing one or more elements of list with the element arguments. first and last specify the first and last index of the range of elements to replace. 0 refers to the first element of the list, and end (or any abbreviation of it) may be used to refer to the last element of the list. If list is empty, then first and last are ignored. If first is less than zero, it is considered to refer to the first element of the list. For non-empty lists, the element indicated by first must exist. If last is less than zero but greater than first, then any specified elements will be prepended to the list. If last is less than first then no elements are deleted; the new elements are simply inserted before first. The element arguments specify zero or more new arguments to be added to the list in place of those that were deleted. Each element argu- ment will become a separate element of the list. If no element arguments are specified, then the elements between first and last are sim- ply deleted. If list is empty, any element arguments are added to the end of the list. SEE ALSO
list(n), lappend(n), lindex(n), linsert(n), llength(n), lsearch(n), lset(n), lrange(n), lsort(n) | KEYWORDS
element, list, replace Tcl 7.4 lreplace(n)