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.
why not use the 'tag' to work from the beginning of the line?
Two examples:
The second example is the more intuitive way of thinking through the process: display the file and then specify what is being selected. The first is the more 'perfect' unix programming solution since grep does not need a cat command - in english, select for something taking a file as input.
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)
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
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)
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 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)
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)
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)
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)
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)