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Handy Linux Commands

  • Searches for files by their name

(ref: 25 simple examples of Linux find command,  )
$ find ./test -name "*.php" ./test/subdir/how.php ./test/cool.php
    • $ find ./test -name "abc.txt" ./test/abc.txt
  • Finding all files containing a text string on Linux

    • grep -rnw '/path/to/somewhere/' -e "pattern"  
  • -r or -R is recursive,
  • -n is line number, and
  • -w stands match the whole word.
  • -l (lower-case L) can be added to just give the file name of matching files.
  • Along with these, --exclude or --include parameter could be used for efficient searching. Something like below:
  • grep --include=\*.{c,h} -rnw '/path/to/somewhere/' -e "pattern"
  • This will only search through the files which have .c or .h extensions. Similarly a sample use of --exclude:

  • grep --exclude=*.o -rnw '/path/to/somewhere/' -e "pattern"
  • Above will exclude searching all the files ending with .o extension. Just like exclude file it's possible to exclude/include directories through --exclude-dir and --include-dir parameter; for example, the following shows how to integrate --exclude-dir:

  • grep --exclude-dir={dir1,dir2,*.dst} -rnw '/path/to/somewhere/' -e "pattern"