2
votes
1answer
69 views

Counting consecutive repetitions of a specific character (e.g. ,)

Say I have a file with lines like the two following: foo,bar,,baz,xy foo,,bar,baz,xy,, I would like to count how many times I have ,, (two consecutive commas surrounded by any other character) in ...
4
votes
3answers
249 views

how to emulate “replace a b b a” with a sed?

I am trying to emulate a replace command which swaps two characters, with a sed script, but the obvious choice: sed -e 's/a/b/g' -e 's/b/a/g' does no work. Can you point me how to do it correctly? ...
3
votes
4answers
319 views

Piping paths with different types of quotes for slash substitution

I would like to use sed to convert a path with backslashes to the same path with forward slashes: E.g. I would like to pipe \\path\to\file\ and obtain /path/to/file None of the following commands ...
0
votes
2answers
405 views

Removing a long string from php files - using grep and sed?

I have encountered some malware on my Linux server, and am trying to remove it from many php files. I've tried endlessly with grep | sed and grep | tr and couldn't even erase a simple text string, ...
5
votes
2answers
11k views

Removing all spaces, tabs, newlines, etc from a variable?

This is the error I am getting and it's failing because of a variable whose value is supposed to be 2 (I am getting this using a select * from tabel). I am getting spaces in that variable. + 0 != ...
4
votes
3answers
547 views

How do I delete all lines with “.png” in a file?

I've a list of urls of which some point to images: http://s.thebrighttag.com/iframe?c=A5lqOqP ...