Visit Our UNIX and Linux User Community


Wildcards in VI


 
Thread Tools Search this Thread
Top Forums UNIX for Dummies Questions & Answers Wildcards in VI
# 8  
Old 01-07-2002
Smilie Smilie Smilie

Perfect.... so after all that wildcard isn't required if I know the start or the finish of the lines I wish to delete....I'd therefore only need wildcard if the sting is midline - where I can use .*[0-9].*

Outstanding effort.
# 9  
Old 01-08-2002
Just to clarify, vi uses regular expression, as opposed to the shell expression you are probably more used to. The reason ".*" acts as a wildcard is that "." means "Any number or character". The "*" means "zero or more of the preceeding character". You could also use something like:
".+", which means one or more of the preceeding character (a non-null). So, Something like :g/S+[0-9]+/d could mean globally (g), search for a line with at least one "S" in it, with at least one number right after it, then delete the line...

It takes some getting used to in switching between shell and regular expressions... I still have a hard time with it.
 

Previous Thread | Next Thread
Test Your Knowledge in Computers #651
Difficulty: Medium
Amanda the Panda is the mascot of MOTIF.
True or False?

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Wildcards and exceptions

Hello: I have a very basic question. I'd like to select all files except for one file. For example, say I want to move all of the files in my current directory to a subdirectory called archive, I would use mv ./* archive/ But what if I want to move all files except for README.txt? Is there an... (19 Replies)
Discussion started by: Danny.Boy
19 Replies

2. Shell Programming and Scripting

Using Wildcards in scp

to scp using windcards you use the following : scp 'hostname:/home/username/diff_201110*' . Enjoy ! (0 Replies)
Discussion started by: phpsnook
0 Replies

3. UNIX for Dummies Questions & Answers

For loop with wildcards

Hi, I've got a ksh for loop with wildcards specified, and I want the wildcards to be preserved when inside the loop. Instead, it is expanding the wilcards and identifying filenames in the current directory #!/usr/bin/ksh list="a* b*" for i in ${list} do echo 'Loop value =' ${i} done... (2 Replies)
Discussion started by: nim
2 Replies

4. UNIX for Advanced & Expert Users

ln -s accept wildcards?

Does ln -s accept wildcards? It doesn't seem like it is working when I use wildcards. (9 Replies)
Discussion started by: cokedude
9 Replies

5. UNIX for Advanced & Expert Users

Wildcards

These 2 websites do a GREAT job of explaining different types of wildcards. I learned about the categories of characters which I never knew about at all. GNU/Linux Command-Line Tools Guide - Wildcards GREP (1 Reply)
Discussion started by: cokedude
1 Replies

6. UNIX for Dummies Questions & Answers

SED and wildcards

I am using this code to locate and modify one particular ID in a file containing thousands of entries sed 's/^>OldID/>NewID/g' Infile > Outfile How can I modify the code so I can rename all old IDs to a new unique ID? I tried this sed 's/^>*/>NewID/g' Infile > Outfile but it did not... (10 Replies)
Discussion started by: Xterra
10 Replies

7. UNIX for Dummies Questions & Answers

wildcards NOT

Hi All Please excuse another straightforward question. When creating a tar archive from a directory I am attempting to use wildcards to eliminate certain filetypes (otherwise the archive gets too large). So I am looking for something along these lines. tar -cf archive.tar * <minus all *.rst... (5 Replies)
Discussion started by: C3000
5 Replies

8. UNIX for Dummies Questions & Answers

ls with wildcards

ok, I'm trying to write a script file that lists files with specific elements in the name into a txt file, it looks like this ls s*.dat > file_names.txt can't figure out whats wrong with that line, any ideas? thanks in advance (10 Replies)
Discussion started by: benu302000
10 Replies

9. UNIX for Dummies Questions & Answers

wildcards

when writing a shell script (bourne) and using a unix command like 'ls' is there anything special you need to do to use a wildcard (like *)? (3 Replies)
Discussion started by: benu302000
3 Replies

10. Programming

Makefile wildcards

Using a makefile I want to compile all .c files in the current directory without specifying them directly and then link their associated .o files into a library. How do I do this ? Thanks. (1 Reply)
Discussion started by: rcscott
1 Replies

Featured Tech Videos