03-29-2009
Good answer. This is because I had started typing an answer while Franklin52 was doing his and mine not as good so having posted it I replaced it with this!
Last edited by TonyFullerMalv; 03-29-2009 at 08:32 AM..
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
Hello, can any one help me on this?
I have a /etc/exports file, it may contain a line (I can not remember exactly). Let me use an a sample file myfile.txt which contains a line
* mypattern uncertain key words
I want this line (with any possible combination of the uncertain key words to be... (2 Replies)
Discussion started by: Dingrong
2 Replies
2. Shell Programming and Scripting
Hi,
I am writing a shell script that needs to remove duplicate lines within a file by category.
example:
section a
a
c
b
a
section b
a
b
a
c
I need to remove the duplicates within th category with out removing the duplicates from the 2 different sections (one of the a's in section... (1 Reply)
Discussion started by: RichElks
1 Replies
3. Shell Programming and Scripting
Hi,
I am pasring a file line by line. I need to check each field in line and remove particular line.
input file lines are,
02;ABC;PQR
03;aaa;rrr
04;ABC;ggg
09;eee;ABC
04;lmn;stu
I am looking for line containing "ABC" as field value. Now How can I remove this line from input file... (7 Replies)
Discussion started by: Poonamol
7 Replies
4. Shell Programming and Scripting
Hi All,
I've a csv file in which the record is getting break into 1 line or more than one line. I want to combine those splits into one line and remove the unwanted character existing in the record i.e. double quote symbol ("). The line gets break only when the record contains double... (4 Replies)
Discussion started by: rajak.net
4 Replies
5. Shell Programming and Scripting
I have below file. I want to remove space at begining of every line and then after also remove blank line from file.
I use below code for each operation.
sed -e 's/^*//' < check.txt > check1.txt
sed '/^\s*$/d' < check1.txt > check2.txt
above code not remove all the space... (12 Replies)
Discussion started by: Mohin Jain
12 Replies
6. Shell Programming and Scripting
HI,
I have the below input file
/* ----------------- cmdsDlyStartFWJ -----------------*/
UNIX_JOB CMDS065J
RUN ANY
CMDNAME sleep 5
AGENT CMDSHP
USER proddata
RUN MON,TUE,WED,THU,FRI
DELAYSUB 02:00
/* "Triggers daily file watcher jobs" */
ENVAR... (5 Replies)
Discussion started by: varun22486
5 Replies
7. UNIX for Dummies Questions & Answers
Hi all!
Thanks for taking the time to view this!
I want to grep out all lines of a file that starts with pattern 1 but also does not match with the second pattern.
Example:
Drink a soda
Eat a banana
Eat multiple bananas
Drink an apple juice
Eat an apple
Eat multiple apples
I... (8 Replies)
Discussion started by: demmel
8 Replies
8. UNIX for Dummies Questions & Answers
e.g.
File name: File.txt
cat File.txt
Result:
#INBOUND_QUEUE=FAQ1
INBOUND_QUEUE=FAQ2
I want to get the value for one which is not commented out.
Thanks, (3 Replies)
Discussion started by: Tanu
3 Replies
9. UNIX for Beginners Questions & Answers
I have a file with a list of references towards the end and want to apply a grep for some string.
text ....
@unnumbered References
@sp 1
@paragraphindent 0
2017. @strong{Chalenski, D.A.}; Wang, K.; Tatanova, Maria; Lopez,
Jorge L.; Hatchell, P.; Dutta, P.; @strong{Small airgun... (1 Reply)
Discussion started by: kristinu
1 Replies
10. UNIX for Beginners Questions & Answers
In the awk piped to sed below I am trying to format file by removing the odd xxxx_digits and whitespace after, then move the even xxxx_digit to the line above it and add a space between them. There may be multiple lines in file but they are in the same format. The Filename_ID line is the last line... (4 Replies)
Discussion started by: cmccabe
4 Replies
GREP(1) General Commands Manual GREP(1)
NAME
grep - search a file for a pattern
SYNOPSIS
grep [ option ... ] pattern [ file ... ]
DESCRIPTION
Grep searches the input files (standard input default) for lines (with newlines excluded) that match the pattern, a regular expression as
defined in regexp(6). 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.
-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.
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 '...'.
SOURCE
/sys/src/cmd/grep.c
SEE ALSO
ed(1), awk(1), sed(1), sam(1), regexp(6)
DIAGNOSTICS
Exit status is null if any lines are selected, or non-null when no lines are selected or an error occurs.
GREP(1)