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Thanks... This one is an eye opener for me!

I'm looking for an awk or (preferably) sed solution to search a pipe delimited file for any occurrence of an email address that does not include a designed domain, and replace the email address with...

Thanks a bunch for the responses folks! Very instructive to see the different options. I'm looking forward to the day when some of these regex type solutions become more intuitive to me :-).
...

I'm looking for what I hope might be a one liner along these lines:
sed '/a line with more than 3 pipes in it/d'

I know how to get the pipe count in a string and store it in a variable, but I'm...

Thanks very much folks!

I'm looking to compare two delimited files:


file1
one|xxx
two|xxx
three|xxx


file2
four|xxx
five|xxx
six|xxx
one|yyy

Where the result is the the file2 row whose first field...

Thanks for the great responses guys - looking at various solutions is a great learning tool. I was further off from a solution than I thought :-)
Al

Although my sed skills are gradually developing, thanks in large part to this forum, I'm having a hard time dealing with pattern space and looping, which I suspect is what I'll need a better handle...

We recently upgraded mysql from 4.0 to 5.0 and the following code is throwing (via DB.php) a "Database Error: Unknown" error. I can say with certainty that my connection parameters are correct and...

Just what the doctor ordered, thanks a bunch!
Al

I'm attempting a little hack to get grep to highlight (change foreground color to red) a found string. Assuming a target file "test" consisting of the word "albert":

My executable "algrep"...

The objective of the code below is to create sed script to be later executed. However, it bonks because $ARCHIVENAME expands to a directory specification so the forward slashes cause problems. I can...

Thanks very much, the awk gig did the trick!

I'm drawing a blank on how to use sed to replace selectively based on position in the string (vs nth occurence):

hello.|there.|how.|are.|you.|

I want the period removed in the 3rd item (as...

Given this row:

|lastname1|middlename1|firstname1|lastname2|middlename2|firstname2

produce this result:

|lastname|middlename|firstname

where the resultant names are based on the...

Thanks folks, what I eventually ended up with was:

awk -F'|' 'NR==FNR{++a[$1];next} $1 in a' file1 file2> first.dat
awk -F'|' 'NR==FNR{++a[$1];next} $1 in a' file2 file1> second.dat

comm -13...

I'd like to eliminate the rows in two files that do not share a common value in the first column. Here's my tortured logic that is way too inefficient to consider, but might show what i'm trying to...

Thanks, just what I was looking for!
Al

I've been banging my head against the wall to accomplish the following. Given two files:

File a.txt

12345 hello
32324 there

File b.txt

12345 stuff
45454 howdy
32324 joe

If...