01-19-2012
Jim, thanks very much for the reply. However, I don't get anything returned if I run this on my test.txt file (as in the first post, space delimited). I also got an error in the pattern matching in the first line--so below I've put the entire header that I wanted to search for.
awk 'NR==1 {
for (i=1; i<=NF; i++) { if ($i~/patient1001/) {arr[i]=i}
next
}
{ for(j=1; j<=NF; j++) {
if(j in arr) {printf("%s ", $j)}
}
print ""
}} ' test.txt
10 More Discussions You Might Find Interesting
1. Programming
How do I use the regular expressions in c++? (2 Replies)
Discussion started by: szzz
2 Replies
2. UNIX for Dummies Questions & Answers
Hey all! I'm trying to search a file and return all instances of a word, let's say 'foo' in this case, as long as it's not a function name. For example:
1) int foo; //OK
2) //'this is totally fooed up' is also OK
3) int foo (int x, int y) //not ok to return
I've tried a lot of regular... (7 Replies)
Discussion started by: Jombee
7 Replies
3. UNIX for Dummies Questions & Answers
I wrote a simple korn shell where I am trying to filter all the good record layouts of a file to only leave the bad ones to look at. That file is hudge. Aside from '# comments' and 'var=ssss', all record should follow a specific record layout, with comma seperated fields. Some fields can have any... (2 Replies)
Discussion started by: Browser_ice
2 Replies
4. Shell Programming and Scripting
I have following content in the file
CancelPolicyMultiLingual3=U|PC3|EN
RestaurantInfoCode1=U|restID1|1
.....
I am trying to use following matching extression
\|(+)
to get this
PC3|EN
restID1|1
Obviously it does not work.
Any ideas? (13 Replies)
Discussion started by: arushunter
13 Replies
5. Shell Programming and Scripting
Hi,
I'm trying to use sed to extract some text and assign it to a variable.
Can anyone provide me with some help? it would be much appreciated!
I"m looking to extract for example:
filename=/output/R34/2005_13_R34_C1042S_T83_CRFTXT_20081015.txt
I'm trying to extract the 1042... (9 Replies)
Discussion started by: jtung
9 Replies
6. Shell Programming and Scripting
hi everybody
I am a new user to this forum and its previous posts have been very useful. I'm searching in a file using grep for patterns like
12.13.444
55.44.443
i.e. of form
<digit><digit>.<digit><digit>.<digit><digit><digit>
Can anybody help me with this.
Thanks in advance (4 Replies)
Discussion started by: jpriyank
4 Replies
7. UNIX for Dummies Questions & Answers
In regular expressions with grep(or egrep), ^ works if we want something in starting of line..but what if we write ^^^ or ^ for pattern matching??..Hope u all r familiar with regular expressions for pattern matching.. (1 Reply)
Discussion started by: aadi_uni
1 Replies
8. Shell Programming and Scripting
Hi,
I have a file as below,
{####
if file
then
file
else
file
}
print file
i need to fine the count of all the pattern - file, inside the { }
i'm using a grep command as
grep -c \{'*file*'\} fake.sh\
It doesn't gives me any result, i think the problem here is the... (5 Replies)
Discussion started by: divak
5 Replies
9. Homework & Coursework Questions
Use and complete the template provided. The entire template must be completed. If you don't, your post may be deleted!
1. The problem statement, all variables and given/known data:
Given a text file (big_english.txt) containing roughly 250,000 words, answer the following using grep and... (2 Replies)
Discussion started by: blahblahblah123
2 Replies
10. UNIX for Dummies Questions & Answers
Hi All,
For the past many days I have solved a lot of grep and regular expression questions, Now I am in a search for a good quality set of questions that can help me build and check my knowledge of grep with regular expressions, it would be great if anyone could help me with my requirement.
... (1 Reply)
Discussion started by: rahulkalra9
1 Replies
LEARN ABOUT DEBIAN
plan9-grep
GREP(1) General Commands Manual GREP(1)
NAME
grep, g - search a file for a pattern
SYNOPSIS
grep [ option ... ] pattern [ file ... ]
g [ option ... ] pattern [ file ... ]
DESCRIPTION
Grep searches the input files (standard input default) for lines that match the pattern, a regular expression as defined in regexp(7) with
the addition of a newline character as an alternative (substitute for |) with lowest precedence. Normally, each line matching the pattern
is `selected', and each selected line is copied to the standard output. The options are
-c Print only a count of matching lines.
-h Do not print file name tags (headers) with output lines.
-e The following argument is taken as a pattern. This option makes it easy to specify patterns that might confuse argument parsing,
such as -n.
-i Ignore alphabetic case distinctions. The implementation folds into lower case all letters in the pattern and input before interpre-
tation. Matched lines are printed in their original form.
-l (ell) Print the names of files with selected lines; don't print the lines.
-L Print the names of files with no selected lines; the converse of -l.
-n Mark each printed line with its line number counted in its file.
-s Produce no output, but return status.
-v Reverse: print lines that do not match the pattern.
-f The pattern argument is the name of a file containing regular expressions one per line.
-b Don't buffer the output: write each output line as soon as it is discovered.
Output lines are tagged by file name when there is more than one input file. (To force this tagging, include /dev/null as a file name
argument.)
Care should be taken when using the shell metacharacters $*[^|()= and newline in pattern; it is safest to enclose the entire expression in
single quotes '...'. An expression starting with '*' will treat the rest of the expression as literal characters.
G invokes grep with -n and forces tagging of output lines by file name. If no files are listed, it searches all files matching
*.C *.b *.c *.h *.m *.cc *.java *.cgi *.pl *.py *.tex *.ms
SOURCE
/src/cmd/grep
/bin/g
SEE ALSO
ed(1), awk(1), sed(1), sam(1), regexp(7)
DIAGNOSTICS
Exit status is null if any lines are selected, or non-null when no lines are selected or an error occurs.
GREP(1)