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UGU: Unix Guru Universe - Unix Tip #4236- September 16, 2012
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Unix Tip #4236- September 16, 2012
SEARCH SEVERAL FILES
To search several files for a
string which you know sparsely,
the following searching technique
would be useful:
#grep .*.*<... part>
or,
#ls|xargs grep .*.*<... part>
This will print all the filenames
and lines which consists of
"<0 to any number of
characters><0 to any
number of characters>
......"
For example, you want to search a
data structure among several header
files where it has been declared
not where it is being used.
If the data structure be XYZ, then
search will be:
#grep }.*XYZ
because you know it might be how
XYZ has been declared,
struct {
.....
.....
} XYZ
You don't know exactly how many
blank characters are there
unless you count them. But when XYZ
will be used it will be
done as follows(for example):
XYZ *xyz;
and you don't want them to find out
as they will be coming
in several header or C files.
This tip generously supported by: dipakb@cdotd.ernet.in
NOTE: All tips provided are USE AT YOUR OWN RISK. Tips are submitted
by various unix admins around the globe. UGU suggest you read and
test each tip in a non-volitile environment before placing into
production.
LAST 5 TIPS
4235
- ARITHMETIC COMPARISON
4234
- COPY A TREE WITH CPIO
4233
- AUTOMATICALLY SET DISPLAY
4232
- ANOTHER SORT BY FILE SIZE
4231
- FILE CONSISTANCY CHECK
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