I want to read a file line by line and exclude the lines that are beginning with special characters. The below code is working fine except when the line starts with hyphen (-) in the file.
How should the grep statement be modified to ignore the line starting with hyphen?
Thanks
Srinraj
Last edited by Don Cragun; 06-19-2015 at 02:32 AM..
Reason: Add CODE tags.
I have a text file like this with hundreds of lines:
>cat file1.txt
1027123000
1027124000
1127125000
1128140000
1228143000
>
all lines are very similar and have exactly 10 digits. I want to separate the digits by twodigit and hyphens....like so,
>
10-27-12-30-00
10-27-12-40-00... (7 Replies)
Hi Folks,
I got to know from this forums on how to grep from a particular line say line 6
awk 'NR==6 {print;exit}'
But how do i grep from line 6 till the end of the file or command output.
Thanks, (3 Replies)
Hi, I'm trying to do something relatively simple.
I have a txt file that has the following kinds of lines (and many more lines):
CP19 Oahu - Maunawili Falls
CP20 Oahu - Maunawili Falls
AG12 Oahu - Maunawili Falls
CP22 Oahu - Maunawili Falls, Local area
AG14 Oahu
CP141 KZ102 Kauai -... (7 Replies)
Hi All
I have UBUNTU 10.04
I would like to run at command line the gui application that I use for finding network places and navigate shared folders or network driver.
I mean the one located under menu PLACES->NETWORK
I tried using "nautilus" but you need to know in advance which IP to give and... (2 Replies)
Hi
I would just like to ask if there is a way for UNIX to ignore/overcome the 255 character limit of the command line?
My problem is that I have a really long line of text from a file (300+ bytes) which i have to "echo" and process by adding commands like "sed" to the end of the line, like... (5 Replies)
Hello,
I have a command that show some application information. Now, I have to grep there informations, like:
# showlog | grep 1266
1266.1369866124 ::
1266.1304711286 ::
41031.1161812668 ::
41078.1301266480 ::
41641.712662564 ::
1266.333792515 ::
41462.1512661988 ::
1266.54932671... (5 Replies)
In COBOL, a hyphen can be used in a field name and in a specific program some field names would be identical to others except a suffix was added--sometimes a suffix to a suffix was used. For example, assume I am looking for AAA, AAA-BBB, and AAA-BBB-CCC and don't want to look at AAA-BBB-CCC... (7 Replies)
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)
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
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)