The simplest and most widely available method to get user input at a shell prompt is the read command. The best way to illustrate its use is a simple demonstration: Another method …
How to prompt for Yes/No/Cancel input in a Linux shell script? Learn MoreOne way to do it is: As pointed out in the comments, this has the side effects of trimming leading whitespace, interpreting backslash sequences, and skipping the last line if …
How to loop through the content of a file in Bash? Learn MoreUse the -prune primary. For example, if you want to exclude ./misc: To exclude multiple directories, OR them between parentheses. And, to exclude directories with a specific name at any level, use the -name primary …
How to exclude a directory in find . command in Linux? Learn MoreShort answer: unset is the command you’re looking for. How to delete an exported environment variable in Linux? Walkthrough of creating and deleting an environment variable in Bash: Test if the …
How to delete an exported environment variable in Linux? Learn MoreIf your goal is to use a profiler, use one of the suggested ones. However, if you’re in a hurry and you can manually interrupt your program under the debugger …
How to profile C++ code running on Linux? Learn MoreCheck the -R option chmod -R <permissionsettings> <dirname> In the future, you can save a lot of time by checking the man page first: So in this case: How to …
How to change permissions for a folder and file in Linux? Learn MoreA symlink (symbolic link) is a type of file that points to other files or directories (folders) in Linux. To create a new symlink (will fail if symlink exists already): …
How to create a symlink in Linux? Learn MoreYou can use these ANSI escape codes: And then use them like this in your script: which prints love in red. From @james-lim’s comment, if you are using the echo command, be sure to use the …
How to change the output color of echo in Linux? Learn MoreThe first parameter represents the regular expression to search for, while the second one represents the directory that should be searched. In this case, . means the current directory. Note: This works …
How to recursively grep all directories and subdirectories? Learn MoreThe first parameter represents the regular expression to search for, while the second one represents the directory that should be searched. In this case, . means the current directory. Note: This works …
How to recursively grep all directories and subdirectories? Learn MoreQuery explained: I’m trying to find a way to scan my entire Linux system for all files containing a specific string of text. Just to clarify, I’m looking for text …
How to find all files containing specific text on Linux? [Answered] Learn MoreQuery: I have a C++ application, running on Linux, which I’m in the process of optimizing. How can I pinpoint which areas of my code are running slowly? How to …
How to profile C++ code running on Linux? [Answered] Learn MoreSample problem: Should or should I not wrap quotes around variables in a shell script? For example, is the following correct: or And if so, why? Answer #1: General rule: …
When should I wrap quotes around a shell variable? [Answered] Learn MoreThis article answers one of the most asked questions, “Is Linux an operating system?”. Most of it is discussed in the history of Linux and UNIX, where I explained how …
Is Linux an Operating System? Learn MoreYou can change the modification time of a file without actually modifying anything in the file using the touch command. Use the -m option to set the modification time of the file to the current time. Also, if the file does not exist, it will create a new file with that name. And if you don’t want to create a new file, use
Most useful examples of the touch command – Linux Learn MoreYou’ve probably heard about Linux or at least the word Linux. You might even know it’s an operating system, in fact, it’s the kernel used at the heart of the …
From UNIX to Linux – History of Linux Learn MoreAnt Theme is a flat GTK theme which comes with three beautiful variants: 1. Ant – light, with red highlight. 2. Ant Dracula – dark, with pink highlight and green …
Install Ant Theme on Ubuntu: Create a beautiful Ubuntu desktop Learn More