Display exact matches only with grep

Question

How can I display all jobs that ended OK only   When I try the command below  it shows both OK and NOTOK since both have  OK   ctmpsm -listall application   grep OK

User · Answer

Try the below command  because it works perfectly    grep -ow  yourstring   crosscheck -   Remove the instance of word from file  then re-execute this command and it should display empty result

User · Answer

Try this   Alex Misuno hp4530s     cat test txt 1 OK 2 OK 3 NOTOK 4 OK 5 NOTOK Alex Misuno hp4530s     cat test txt   grep     OK   1 OK 2 OK 4 OK

User · Answer

You need a more specific expression  Try grep   OK   or grep   0-9   OK   You want to choose a pattern that matches what you want  but won t match what you don t want  That pattern will depend upon what your whole file contents might look like   You can also do  grep -w  OK  which will only match a whole word  OK   such as  1 OK  but won t match  1OK  or  OKFINE      cat test txt   grep -w  OK  1 OK 2 OK 4 OK

User · Answer

This worked for me   grep    bsearch word b   text file  gt  output txt      b indicates boundaries  This is much faster    or   grep -w  search word  text file  gt  output txt

User · Answer

marks the beginning of the line and   marks the end of the line  This will return exact matches of  quot OK quot  only   This also works with double quotes if that s your preference   grep   OK    If there are other characters before the OK   NOTOK  like the job name   you can exclude the  quot NOT quot  prefix by allowing any characters    and then excluding  quot NOT quot    NOT  just before the  quot OK quot   grep       NOT OK

User · Answer

Recently I came across an issue in grep  I was trying to match the pattern x y z and grep returned x y-z Using some regular expression we may can overcome this  but with grep whole word matching did not help  Since the script I was writing is a generic one  I cannot restrict search for a specific way as in like x y z or x y-z     Quick way I figured is to run a grep and then a condition check var  x y z  var1 grep -o x y z file txt if    var1     var   echo  Pattern match exact  else echo  Pattern does not match exact  fi  https   linuxacatalyst blogspot com 2019 12 grep-pattern-matching-issues html

User · Answer

This may work for you  grep -E      s OK    s

User · Answer

try this   grep -P    tomcat     tst1 txt   It will search for specific word in txt file  Here we are trying to search word tomcat

[unix] Display exact matches only with grep

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