I don't think there is an option in grep itself to fiddle with the semantics of the -w option. Some locales probably have slightly different definition of what constitutes a "word" but relying on that seems brittle at best. Perhaps it's simplest to explicitly specify what characters are allowed as word separators. Something like this, maybe?
The stuff between the square brackets are a space and a tab. (In some shells you need to type something like ctrl-v tab to enter a literal tab character.) Add more characters if you want other characters to be allowed as word separators. The regular expression means "beginning of line, or one of the characters between the square brackets", followed by your string (in this case 56677), followed by "one of the characters between the square brackets, or end of line". Plain grep does not understand this syntax; it's "extended regular expressions", hence, "extended grep" aka egrep. (Though POSIX specifies a way to use a similar set of operators with plain grep, too, I believe).
Note also that you don't need or want the cat there; grep can read what input files you want to feed it all by itself.
Hi All,
Very GM
I am searching for a specific filesystem on a serevr,
like df -k "/"
i am geting an output also...
but when i am checking for somthing like /oramnt (which is not mounted currently)
so i am geting an out like this
df -k "/oramnt"
output of root...!
so i tried... (7 Replies)
I'm trying to find a exact word match but couldn't do it.
ABC
ABC_NE
Searching for ABC_NE tried
grep -w </ABC_NE/>
grep "^ABC_NE$"
but didn't worked , any awk variants would also help.
---------- Post updated at 08:40 AM ---------- Previous update was at 06:48 AM ----------
I... (2 Replies)
I have a file that has the words I want to find in other files (but lets say I just want to find my words in a single file). Those words are IDs, so if my word is ZZZ4, outputs like aaZZZ4, ZZZ4bb, aaZZZ4bb, ZZ4, ZZZ, ZyZ4, ZZZ4.8 (or anything like that) WON'T BE USEFUL.
I need the whole word... (6 Replies)
QUESTION1:
How do you grep only an exact string. I am using Solaris10 and do not have any GNU products installed.
Contents of car.txt
CAR1_KEY0
CAR1_KEY1
CAR2_KEY0
CAR2_KEY1
CAR1_KEY10
CURRENT COMMAND LINE: WHERE VARIABLE CAR_NUMBER=1 AND KEY_NUMBER=1
grep... (1 Reply)
Hi All,
I have a text / log file which contains strings like meta777, 77, meta, 777. Now I want to write a script which can detect a string 'meta#777' in a text file & number of occurence of 'meta', number of #, number 7, 77, 777.
I'm using grep -e '77' filename but no luck. It is returning... (5 Replies)
This may be stupid question but not able to solve it.
How to grep exact word and line along with it.
TEST:/u00/app/oracle/product/10.2.0/TEST:N
TEST2:/u00/app/oracle/product/10.2.0/ODS:N
TEST3:/u00/app/oracle/product/10.2.0/TEST:N
TEST4:/u00/app/oracle/product/10.2.0/ODS:N... (4 Replies)
Hi
i am writing and i want to take very first word "A924A5FC"from the below o/p
A924A5FC 0910055313 P S SYSPROC SOFTWARE PROGRAM ABNORMALLY TERMINATED
A924A5FC 0908091913 P S SYSPROC SOFTWARE PROGRAM ABNORMALLY TERMINATED
A924A5FC 0906090313 P S SYSPROC SOFTWARE... (4 Replies)
Hi
I am trying to grep multiple exact word from log file and directing it to a new file.
however my log file has many numeric values, such as 0400, 0401, 0404
and all html error also starts with 404, 401 etc
so I just want to grep only when 404, 401 etc is coming, NOT 0400, OR 0401
i have... (8 Replies)
Hi All,
i want exact math to search to find it and i tried as like below it not working.
My Excepted out : should not get the output that mean exact word math.
echo "test.txt|123"|sed 's/|/ /g'|grep -w "test"
Thanks (1 Reply)
Discussion started by: bmk123
1 Replies
LEARN ABOUT ULTRIX
egrep
grep(1) General Commands Manual grep(1)Name
grep, egrep, fgrep - search file for regular expression
Syntax
grep [option...] expression [file...]
egrep [option...] [expression] [file...]
fgrep [option...] [strings] [file]
Description
Commands of the family search the input files (standard input default) for lines matching a pattern. Normally, each line found is copied
to the standard output.
The command patterns are limited regular expressions in the style of which uses a compact nondeterministic algorithm. The command patterns
are full regular expressions. The command uses a fast deterministic algorithm that sometimes needs exponential space. The command pat-
terns are fixed strings. The command is fast and compact.
In all cases the file name is shown if there is more than one input file. Take care when using the characters $ * [ ^ | ( ) and in the
expression because they are also meaningful to the Shell. It is safest to enclose the entire expression argument in single quotes ' '.
The command searches for lines that contain one of the (new line-separated) strings.
The command accepts extended regular expressions. In the following description `character' excludes new line:
A followed by a single character other than new line matches that character.
The character ^ matches the beginning of a line.
The character $ matches the end of a line.
A . (dot) matches any character.
A single character not otherwise endowed with special meaning matches that character.
A string enclosed in brackets [] matches any single character from the string. Ranges of ASCII character codes may be abbreviated
as in `a-z0-9'. A ] may occur only as the first character of the string. A literal - must be placed where it can't be mistaken as
a range indicator.
A regular expression followed by an * (asterisk) matches a sequence of 0 or more matches of the regular expression. A regular
expression followed by a + (plus) matches a sequence of 1 or more matches of the regular expression. A regular expression followed
by a ? (question mark) matches a sequence of 0 or 1 matches of the regular expression.
Two regular expressions concatenated match a match of the first followed by a match of the second.
Two regular expressions separated by | or new line match either a match for the first or a match for the second.
A regular expression enclosed in parentheses matches a match for the regular expression.
The order of precedence of operators at the same parenthesis level is the following: [], then *+?, then concatenation, then | and new
line.
Options-b Precedes each output line with its block number. This is sometimes useful in locating disk block numbers by context.
-c Produces count of matching lines only.
-e expression
Uses next argument as expression that begins with a minus (-).
-f file Takes regular expression (egrep) or string list (fgrep) from file.
-i Considers upper and lowercase letter identical in making comparisons and only).
-l Lists files with matching lines only once, separated by a new line.
-n Precedes each matching line with its line number.
-s Silent mode and nothing is printed (except error messages). This is useful for checking the error status (see DIAGNOSTICS).
-v Displays all lines that do not match specified expression.
-w Searches for an expression as for a word (as if surrounded by `<' and `>'). For further information, see only.
-x Prints exact lines matched in their entirety only).
Restrictions
Lines are limited to 256 characters; longer lines are truncated.
Diagnostics
Exit status is 0 if any matches are found, 1 if none, 2 for syntax errors or inaccessible files.
See Alsoex(1), sed(1), sh(1)grep(1)