To find word inside file linux ubuntu - grep command

If you're looking for lines matching in files, my favorite command is:

grep -Hrni 'vijay' /home/v/abc.txt

grep -rl 'vijay' /home/vfolder

• -H causes the filename to be printed (implied when multiple files are searched)
• -r does a recursive search
• -n causes the line number to be printed

• -I ignore binary files (complement: -a treat all files as text)
• -F treat search term as a literal, not a regular expression
• -i do a case-insensitive search

• --color=always to force colors even when piping through less. To make less support colors, you need to use the -r option:

  grep -Hrn search . | less -r
  

• --exclude-dir=dir useful for excluding directories like .svn and .git.