161bashThis demonstrates listing files and directories sorted by modification time, with the most recently modified files appearing first.ls -texternal toolslssorting optionsby modification time
162bashThis demonstrates listing all files and directories, including hidden ones, using the ls --all command.ls --allexternal toolslsdirectory listingall files (including hidden)
163bashThis demonstrates listing the contents of the current directory using the ls command.ls ls .external toolslsdirectory listing
164bashThis demonstrates creating an empty file using the touch command.touch foo.shexternal toolstouchfile creation
165bashThis demonstrates using grep to search for a specific string in a file and conditionally print a message if the string is found.if grep -q 'foo' ~/.bash_history; then echo "You appear to have typed 'foo' in the past" fiexternal toolsgrepstring search
166bashThis demonstrates converting text to uppercase using the tr command.echo "Welcome To Devhints" | tr '[:lower:]' '[:upper:]' #WELCOME TO DEVHINTSexternal toolstrcharacter translationcase conversion
167bashThis demonstrates using wildcard characters and command-line options with the cp command.wildcard="*.txt" options="iv" cp -$options $wildcard /tmpexternal toolscpwildcard usage
168bashThis demonstrates using curl to download a resource, resume if interrupted, follow redirects, and save it with the original filename.curl -C - -L -O "https://example.com/example.resource"external toolscurldownload resource