lazy.md

Task Description	Command	GNU coreutils/POSIX utils/Unix utils
Create tcsh Alias for readlink	alias toclip 'readlink -f \!:1 | to_clipboard'	alias, readlink, to_clipboard
Improving alias for copying a path to the clipboard	Change the alias name to copy_path_to_clipboard for clarity: alias copy_path_to_clipboard='readlink -f \!:1 | to_clipboard'	alias, readlink, to_clipboard
Clean package cache (APT-based systems)	sudo apt-get clean	apt-get
Prepend filename to each line during concatenation	awk '{print FILENAME": "$0}' *something.txt > concatenated_file.txt	awk
Identify duplicate files based on SHA-256 hashes, using sort and uniq.	cat file_hashes.txt | sort | uniq -d > duplicates.txt	cat, sort, uniq, >
Concatenate text files ending with a specific suffix	cat *something.txt > concatenated_file.txt	cat
Print private keys	cat /path/to/privatekey.key	cat, less, vim
Compare two files and output 'yes' or 'no'	cmp -s file1 file2 && echo "yes" || echo "no"	cmp, echo
Check disk space usage	df -h	df
Check which filesystem home directory is on	df -h ~	df
Exclude a directory in du command	du -h --max-depth=1 --exclude=~/.snapshot ~	du
Exclude multiple directories in du command	du -h --max-depth=1 --exclude=~/.snapshot --exclude=~/another_dir ~	du
List size of files/directories in home directory	du -sh ~/*	du
Identify large files/directories in home directory	du -h --max-depth=1 ~ | sort -hr	du, sort
Limit du depth and sort by size	du -h --max-depth=1 ~ | sort -hr	du, sort
Generate a file with SHA-256 hashes and absolute paths of all files in the directory.	find . -type f -exec sh -c 'shasum -a 256 "$0" | awk "{print \$1, \"$(readlink -f "$0")\"}"' {} \; > file_hashes.txt	find, shasum, awk, >
Count files in a directory excluding . and ..	find . -maxdepth 1 -type f | wc -l	find, wc
Find files over a specific size (e.g., 100MB)	find ~ -type f -size +100M	find
Find files larger than a specific size (e.g., 50MB)	find ~ -type f -size +50M -exec ls -lh {} \;	find, ls
Find files with a specific pattern and display their absolute path	find . -type f -iname "name.*" -exec readlink -f {} \;	find, readlink
Delete files and directories recursively except .tgz files	find . ! -name "*.tgz" -exec rm -rf {} +	find, rm, rmdir
Create a command to open *.pcap files with Wireshark in background	find /path/to/directory -name "*.pcap" -exec sh -c 'wireshark "$0" &' {} \;	find, sh, wireshark
Delete files recursively except .tgz files	find . ! -name "*.tgz" -type f | xargs rm	find, xargs
Compress Files with find and zip	find /path/to/files -type f -exec sh -c 'f="{}"; zip "output.zip" -j "$f" "$(dirname "$f" | sed "s#.*/##")_$(basename "$f")"' \;	find, zip
Compress multiple files into a ZIP archive with specific naming based on main subdirectory	find /path/to/files -type f -exec sh -c 'zip -j "output.zip" "$(basename $(dirname "{}"))/$(basename "{}")"' \;	find, zip
Search for text using regular expressions	grep -E 'pattern' file.txt	grep -E
Escape double quotes in grep command	grep \" pattern_file.txt	grep
Escape open curly brace in grep command	grep \{ pattern_file.txt	grep
Extract characters from start of line up to the character ':'	grep -o '^[^:]*' file.txt	grep
Filter file for timestamps within a specific range	grep -E '2023-10-31 (0[7-9]|1[0-6]):[0-5][0-9]:[0-5][0-9]' file.txt	grep
Filter lines containing specific strings into separate files	grep 'A' file.txt > file_A.txt grep 'B' file.txt > file_B.txt grep 'C' file.txt > file_C.txt	grep
Search for a specific string in files	grep "example xstringx" file1 file2 file3	grep
Search for a string "example" in specific files recursively	grep -r "example" --include="file_name" /path/to/directory	grep
Search for a string in files without showing filenames	grep -h "example xstringx" file1 file2 file3	grep, -h
Convert Memory Size to GB	grep MemTotal /proc/meminfo | awk '{print $2 / 1024 / 1024 " GB"}'	grep, awk
Test the integrity of a gzip file	gzip -t file.tar.gz	gzip, -t
Count files in a directory excluding directories	ls -lA | grep -v '^d' | wc -l	ls, grep, wc
Check available modules	module avail	module
Load a specific module (e.g., ncdu)	module load ncdu	module
Check RAM Usage by User's Processes	ps -u $USER --no-headers -o rss | awk '{sum+=$1} END {print sum / 1024 " MB"}'	ps, awk
Check disk quota usage	quota -s	quota
Check quota for a specific filesystem	quota -s -f /path/to/filesystem	quota
Format quota output using awk	quota -s | awk '{print "User: "$1, " - Used: "$2, " - Quota: "$3}'	quota, awk
Format output into a table using column	quota -s | column -t	quota, column
Delete a specific directory	rm -r /path/to/directory	rm
Delete a specific file	rm /path/to/file	rm
Delete the .snapshot directory	rm -rf ~/.snapshot	rm
Sort text lines in reverse human-readable order	sort -hr	sort -hr
Identify duplicate files based on SHA-256 hashes, using sort and awk.	sort file_hashes.txt | awk '{if (p==$1) print $0; else p=$1}' > duplicates.txt	sort, awk, >
Compress a directory	tar -czvf archive_name.tar.gz /path/to/directory	tar
Create a tar archive of all files in a directory without compression.	tar -cf archive.tar directory_path/*	tar
Create a tar archive of files in a directory without including the entire path.	tar -cf archive.tar -C directory_path .	tar
Create a tar archive of specific files in a directory without including the parent directory path.	tar -cf archive.tar -C directory_path file1 file2 file3	tar
Create a tar archive without compression.	tar -cf archive.tar files_or_directories	tar
List the files inside a tar archive.	tar -tf archive.tar	tar
Untar (extract) the contents of a tar archive.	tar -xf archive.tar	tar
Test the integrity of a tar.gz file	tar -tzf file.tar.gz	tar, -tzf
List files in a .tgz file	tar -tzf file.tgz	tar, gunzip
Set default permissions to 700 for new files and directories	umask 0077	umask
Implement a private mode in the terminal	alias private='umask 0077' in .tcshrc or .cshrc	umask, alias
Extract a specific HTTP packet as a hex string	tcpdump -r your_file.pcap -nn 'tcp port src_port and tcp port dst_port and ip src src_ip and ip dst dst_ip' -c 1 -w - | xxd -p	tcpdump, xxd
Get list of packet numbers for every HTTP packet in a trace	tshark -r trace.pcap -Y http -T fields -e frame.number	tshark
Extract HTTP packet details and write them as hex to a file	Script-based command; not a single-line CLI command	python, scapy
Generate filter for extracting HTTP packets from a pcap file	Script-based command; not a single-line CLI command	tshark, scapy
Sorting Files by Size in Descending Order	sort -hr file_sizes.txt	sort
Searching for Text with Regular Expressions	grep -E 'pattern' input.txt	grep
Capture correct HTTP flow	Script-based command; not a single-line CLI command	Wireshark, curl
Generate fragmented and irrecoverable HTTP flows	Script-based command; not a single-line CLI command	Scapy
Capture network traffic	Script-based command; not a single-line CLI command	Wireshark
Replay captured network traffic	tcpreplay --intf1=<interface> <capture_file>	tcpreplay
Extract a RAR archive into a folder with the same name	7z x -o./$(basename "$1" .rar) "$1"	7z x -o./$(basename "$1" .rar) "$1"
Extract a RAR archive into a folder with the same name (without assuming shell)	7z x -o./$(basename "$RAR_FILE" .rar) "$RAR_FILE"	7z x -o./$(basename "$RAR_FILE" .rar) "$RAR_FILE"
Extract and decompress .gz files within a RAR archive	7z x -so "$RAR_FILE" | gzip -d | tar xf - -C "$(basename "$RAR_FILE" .rar)"	7z x -so "$RAR_FILE" | gzip -d | tar xf - -C "$(basename "$RAR_FILE" .rar)"
Decompress every .gz file in the current directory	for file in *.gz; do gzip -d "$file"; done	for file in *.gz; do gzip -d "$file"; done
Concatenate every .pcap file in the current directory	mergecap -w output.pcap *.pcap	mergecap -w output.pcap *.pcap
Remove C++ comments from a source file	Script-based command; not a single-line CLI command	sed
Formatting C++ code including removing comments	Script-based command; not a single-line CLI command	clang-format
Understanding the using keyword vs typedef in C++	No command
Overview of C++ memory pool implementation	No command

lazy.tsv

Task Description	Command	GNU coreutils/POSIX utils/Unix utils
Clean package cache (APT-based systems)	sudo apt-get clean	apt-get
Prepend filename to each line during concatenation	awk '{print FILENAME": "$0}' *something.txt > concatenated_file.txt
	awk
Concatenate text files ending with a specific suffix	cat *something.txt > concatenated_file.txt	cat
Print private keys	cat /path/to/privatekey.key	cat`, `less`, `vim
Check disk space usage	df -h	df
Check which filesystem home directory is on	df -h ~	df
Exclude a directory in `du` command	du -h --max-depth=1 --exclude=~/.snapshot ~	du
Exclude multiple directories in `du` command	du -h --max-depth=1 --exclude=~/.snapshot --exclude=~/another_dir ~	du
List size of files/directories in home directory	du -sh ~/*	du
Find files over a specific size (e.g., 100MB)	find ~ -type f -size +100M	find
Find files larger than a specific size (e.g., 50MB)	find ~ -type f -size +50M -exec ls -lh {} \;	find`, `ls
Find files with a specific pattern and display their absolute path	find . -type f -iname "name.*" -exec readlink -f {} \;	find`, `readlink
Delete files and directories recursively except `.tgz` files	find . ! -name "*.tgz" -exec rm -rf {} +	find`, `rm`, `rmdir
Create a command to open `*.pcap` files with Wireshark in background	find /path/to/directory -name "*.pcap" -exec sh -c 'wireshark "$0" &' {} \;	find`, `sh`, `wireshark
Compress multiple files into a ZIP archive with specific naming based on main subdirectory	find /path/to/files -type f -exec sh -c 'zip -j "output.zip" "$(basename $(dirname "{}"))/$(basename "{}")"' \;	find`, `zip
Search for text using regular expressions	grep -E 'pattern' file.txt	grep -E
Escape double quotes in `grep` command	grep \" pattern_file.txt	grep
Escape open curly brace in `grep` command	grep \{ pattern_file.txt	grep
Extract characters from start of line up to  the character ':'	grep -o '^[^:]*' file.txt	grep
Filter lines containing specific strings into separate files	grep 'A' file.txt > file_A.txt` `grep 'B' file.txt > file_B.txt` `grep 'C' file.txt > file_C.txt	grep
Search for a specific string in files	grep "example xstringx" file1 file2 file3	grep
Search for a string "example" in specific files recursively	grep -r "example" --include="file_name" /path/to/directory	grep
Search for a string in files without showing filenames	grep -h "example xstringx" file1 file2 file3	grep`, `-h
Test the integrity of a gzip file	gzip -t file.tar.gz	gzip`, `-t
Check available modules	module avail	module
Load a specific module (e.g., ncdu)	module load ncdu	module
Check disk quota usage	quota -s	quota
Check quota for a specific filesystem	quota -s -f /path/to/filesystem	quota
Delete a specific directory	rm -r /path/to/directory	rm
Delete a specific file	rm /path/to/file	rm
Delete the `.snapshot` directory	rm -rf ~/.snapshot	rm
Sort text lines in reverse human-readable order	sort -hr	sort -hr
Compress a directory	tar -czvf archive_name.tar.gz /path/to/directory	tar
Create a tar archive of all files in a directory without compression.	tar -cf archive.tar directory_path/*	tar
Create a tar archive of files in a directory without including the entire path.	tar -cf archive.tar -C directory_path .	tar
Create a tar archive of specific files in a directory without including the parent directory path.	tar -cf archive.tar -C directory_path file1 file2 file3	tar
Create a tar archive without compression.	tar -cf archive.tar files_or_directories	tar
List the files inside a tar archive.	tar -tf archive.tar	tar
Untar (extract) the contents of a tar archive.	tar -xf archive.tar	tar
Test the integrity of a tar.gz file	tar -tzf file.tar.gz	tar`, `-tzf
List files in a `.tgz` file	tar -tzf file.tgz	tar`, `gunzip
Set default permissions to 700 for new files and directories	umask 0077	umask
Implement a private mode in the terminal	alias private='umask 0077'` in `.tcshrc` or `.cshrc	umask`, `alias
Get list of packet numbers for every HTTP packet in a trace	tshark -r trace.pcap -Y http -T fields -e frame.number	tshark
Extract HTTP packet details and write them as hex to a file	Script-based command; not a single-line CLI command	python`, `scapy
Generate filter for extracting HTTP packets from a pcap file	Script-based command; not a single-line CLI command	tshark`, `scapy
Sorting Files by Size in Descending Order	sort -hr file_sizes.txt	sort
Searching for Text with Regular Expressions	grep -E 'pattern' input.txt	grep
Capture correct HTTP flow	Script-based command; not a single-line CLI command	Wireshark`, `curl
Generate fragmented and irrecoverable HTTP flows	Script-based command; not a single-line CLI command	Scapy
Capture network traffic	Script-based command; not a single-line CLI command	Wireshark
Replay captured network traffic	tcpreplay --intf1=<interface> <capture_file>	tcpreplay
Extract a RAR archive into a folder with the same name	7z x -o./$(basename "$1" .rar) "$1"	7z x -o./$(basename "$1" .rar) "$1"
Extract a RAR archive into a folder with the same name (without assuming shell)	7z x -o./$(basename "$RAR_FILE" .rar) "$RAR_FILE"	7z x -o./$(basename "$RAR_FILE" .rar) "$RAR_FILE"
Decompress every .gz file in the current directory	for file in *.gz; do gzip -d "$file"; done	for file in *.gz; do gzip -d "$file"; done
Concatenate every .pcap file in the current directory	mergecap -w output.pcap *.pcap	mergecap -w output.pcap *.pcap
Remove C++ comments from a source file	Script-based command; not a single-line CLI command	sed
Formatting C++ code including removing comments	Script-based command; not a single-line CLI command	clang-format