command - The difference between -r and -R - Unix Linux Stack Exchange The Unix utilities were developed piecemeal and the command options reflect the individual choices of their lead or sole developers There are only 26 ASCII lower-case option letters available, which is the preferred set (commands are generally in lower case for ease of typing), and this limited set leads to mnemonic conflicts
What is the purpose of in a shell command? - Stack Overflow command-line - what is the purpose of ? In shell, when you see $ command one command two the intent is to execute the command that follows the only if the first command is successful This is idiomatic of Posix shells, and not only found in Bash
What does at the end of a linux command mean? command gedit launches the default editor gedit UI commandeclipse launches eclipse IDE Such commands keep throwing the logs of activities in the terminal and don't return the command prompt Question is, how to run such commands in background so that, we will get back command terminal and we can use terminal for other tasks
Can I execute nested or chained commands in UNIX shell? If you want to execute a command over a range of file (or directory) names returned by the "find" command, Colin is correct, you need to look at the "-exec" option of "find" If you're looking to execute a command over a bunch of arguments listed in a file or coming from stdin, you need to check out the "xargs" commands
linux - Explaining the find -mtime command - Stack Overflow I'm trying to remove all the dated logs except the most recent Before I execute a script to remove the files, I want to of course test my commands to make sure I'm bringing up accurate results When
bash - Confusing use of and - Unix Linux Stack Exchange The right side of will only be evaluated if the exit status of the left side is zero (i e true) || is the opposite: it will evaluate the right side only if the left side exit status is non-zero (i e false)
Comparing two files in Linux terminal - Stack Overflow You can use diff tool in linux to compare two files You can use --changed-group-format and --unchanged-group-format options to filter required data Following three options can use to select the relevant group for each option: '%<' get lines from FILE1 '%>' get lines from FILE2