Find, Locate, and Grep

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Find is a linux search tool that can be used to find a variety of files based on the given criteria.

find targetdirectory -name stringtofind

find / -name hello.txt

find / -name "*.txt"

find / -name "*.txt" 2>/dev/null

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Find files with read,write, and execute permissions

find / -perm +rwx

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Find files that are greater than 2MB:

find / -size +2M

Find files that are less than 2MB:

find / -size -2M

Find files that are exactly 2MB:

find / -size 2M

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Find files based on group

find / -group groupname

Find files based on owner

find / -user username

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Locate is similar to find in its functionality, however, there are some important distinctions:

Locate keeps it's own database of files on a system
Locate is less disk IO intensive since it doesn't have to scan the whole hard drive for files, instead it references it's own database.
Locate isn't installed by default on most systems, the package name is mlocate. Once installed, you'll need to run the updated command to update locate's database - this should really be updated every time you use the command

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locate test.txt

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