| ls |
list files and directories |
| cp |
copy files and directories |
| cat |
concatenate files and print on the standard output |
| more |
listing/navigate large file content |
| less |
listing/navigate large file content |
| tail |
view end lines of large file |
| nl |
numbering lines in file |
| which |
locate executable file associated with command |
| whereis |
locate binary, source and manual page files |
| grep |
search specific pattern in the files |
| wc |
counting lines, words and characters in text file or command output |
| basename |
extract file name from a full path by removing directory path and suffix |
| cp |
copy files or directories |
| cut |
extract specific parts of each line from file or input |
| sort |
to sort lines |
| uniq |
to identify and filter duplicate lines in text |
| tr |
trasnforming text at the character level |
| join |
to merge data from multiple files |
| xargs |
to build and exucute command from standard input |
| awk |
to extract, filter and transform information |
| top |
real-time monitor sytem processes and resources |
| free |
to monitore and analyze memory usage |
| df |
to monitor disk space usage on linux systems |