81bashThis demonstrates the use of the top command to display real-time system and process information.topexternal toolstopsystem and process monitoring
82bashThis demonstrates using sed to find and replace patterns in a string using regular expressions.echo "abc123def456" | sed -E 's/[a-z]*/First letters ==> & <== /'external toolssedregex substitution (regular expression substitution)
83bashThis demonstrates scheduling a system reboot using the shutdown command with a delay and a custom message.shutdown -r +5 "Cya later"external toolsshutdownsystem reboot scheduling
84bashThis script searches for the string foo in the directory /bar and lists the files that contain matches.grep 'foo' /bar --files-with-matchesexternal toolsgrep
85bashPrint the contents of file.txt to the standard output using the cat command.cat file.txtexternal toolscatfile content display
86bashThis demonstrates basic awk usage for extracting specific fields from text.echo -e "hello world\nawk cheatsheet" | awk '{print $2}'external toolsawkfield extraction
87bashThis demonstrates pattern matching and extraction using sed in Bash.echo "The quick brown fox jumps over the lazy dog." | sed -n "s|.*\(the .* dog\).*|\1|p"external toolssedpattern matching and extraction
88bashThis demonstrates creating an empty file using the touch command.touch foo.shexternal toolstouchfile creation
89bashThis demonstrates the basic usage of the shutdown command to initiate a system shutdown.shutdownexternal toolsshutdownsystem shutdown
90bashThis demonstrates checking the scheduling priority (nice value) of a process by its PID using the ps command.ps -o ni PIDexternal toolspsprocess priority (nice value)
91bashThis demonstrates pattern matching and substitution using sed with a custom delimiter.echo "The quick brown fox jumps over the lazy dog." | sed -n "s|the \(.*\) dog|something else|p"external toolssedpattern matching and substitution
92bashThis demonstrates scheduling a system shutdown with a delay and a custom message.shutdown +5 "Cya later"external toolssystem managementshutdown commandscheduled shutdown
93bashThis demonstrates sorting the lines of a text file in ascending order using the sort command.sort file.txtexternal toolssortbasic sorting
94bashThis script moves all .csv files in the current directory to the data/ directory.mv *.csv data/external toolsmv
95bashThis demonstrates using the mtr command to trace and analyze network routes to example.com with detailed reporting over 100 cycles.mtr --report --report-wide --report-cycles 100 example.comexternal toolsmtrnetwork diagnosticsroute tracing and reporting
96bashThis demonstrates extracting the second word from a string using awk.echo "hello world" | awk '{print $2}'external toolsawkbasic field extraction
97bashThis command initiates a system reboot using the shutdown command with the --reboot option.shutdown --rebootexternal toolsshutdownsystem reboot
98bashThis demonstrates creating a symbolic link in a Unix-like system.ln --symbolic foo barexternal toolslnsymbolic link creation
99bashThis demonstrates how to select and display specific fields from a file.cut -d , -f 2-5, 8 sales.csvexternal toolscut
100bashThis script searches for the exact line containing foo in the file /bar using grep with the --line-regexp option.grep 'foo' /bar --line-regexpexternal toolsgrep