GDB Cheat Sheet
Here is a collection of good GDB Cheat Sheets from the Internet.
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- Programming | QA | Tutorial
How to iterate all dirs and files in a dir in C++?
How to iterate all dirs and files in a dir in C++? To open a dir, we can use opendir() to open a directory stream. DIR *opendir(const char *name); Then we can use readdir() to iterate the directory stream. struct dirent *readdir(DIR *dirp); Here is an example C++ program using these 2 library functions. #include…
- Programming | QA | Tutorial
How to get a path’s mtime in C++ on Linux?
ByEric MaHow to get a path’s mtime in C++ on Linux? The path can be a file or a dir. You may call the standard library function lstat() for the file or dir under the path. int lstat(const char *pathname, struct stat *statbuf); From the returned stat struct, there is a field st_mtim which is the…
- Programming | QA | Tutorial
`readlink -m` equivalent function in Python to get canonical file name
ByQ Areadlink -m can get canonical file name by resolving every symlinks in every component of the given path recursively. In Python, the os.readlink() function does not do so. Any equivalent function in Python to the readlink -m command line? Specifically, it does: canonicalize by following every symlink in every component of the given name recursively,…
How to test a file or directory exists in Go?
ByEric MaHow to test a path (a file or directory exists) in golang? In Bash, the [ -e ] tests can test whether a file or a directory exist. What are the corresponding Go ways for the test? You can use the `os.Stat()` and `os.IsNotExist()` standard libraries functions together to test whether a file or a…
- Linux | Programming | Tutorial
How to Get Available Filesystem Space on Linux: a C Function with a C++ Example
ByEric MaIt is common for programs to write to files in filesystems on disks. However, what if the disk was almost full when your program writes to the filesystem on a disk? For systems software and mission critical programs, it is a better or must-to-do practice to check the available filesystem space before actually writing to…
An Online JPG to EPS Converter
ByEric MaConverting the JPG images to EPS is frequently need especially when write documents in LaTeX. I introduced how to Convert JPG Images to EPS on Linux. However, not everyone have a Linux box available at any time. We set up an Online JPG to EPS Converter to help people convert JPG to EPS. Convert JPG…