The UNIX® Standard | www.opengroup.org
2025年5月22日 · Single UNIX Specification- “The Standard” The Single UNIX Specification is the standard in which the core interfaces of a UNIX OS are measured. The UNIX standard …
What does the line "#!/bin/sh" mean in a UNIX shell script?
2011年9月10日 · When you try to execute a program in unix (one with the executable bit set), the operating system will look at the first few bytes of the file. These form the so-called "magic …
unix - What is the meaning of "POSIX"? - Stack Overflow
2009年11月23日 · Since every Unix does things a little differently -- Solaris, Mac OS X, IRIX, BSD, and Linux all have their quirks -- POSIX is especially useful to those in the industry as it …
How to check if $? is not equal to zero in unix shell scripting?
How to check if $? is not equal to zero in unix shell scripting? Asked 12 years, 9 months ago Modified 3 years, 9 months ago Viewed 357k times
Display curl output in readable JSON format in Unix shell script
2017年5月10日 · Display curl output in readable JSON format in Unix shell script Asked 11 years, 1 month ago Modified 6 months ago Viewed 470k times
shell - Listing only directories in UNIX - Stack Overflow
2010年9月8日 · I want to list only the directories in specified path (ls doesn't have such option). Also, can this be done with a single line command?
unix - Why is 1/1/1970 the "epoch time"? - Stack Overflow
2011年6月23日 · The definition of unix time and the epoch date went through a couple of changes before stabilizing on what it is now. But it does not say why exactly 1/1/1970 was chosen in the …
unix - Why should text files end with a newline? - Stack Overflow
2009年4月8日 · I assume everyone here is familiar with the adage that all text files should end with a newline. I've known of this "rule" for years but I've always wondered — why?
How to find out what group a given user has? - Stack Overflow
2008年12月8日 · In Unix/Linux, how do you find out what group a given user is in via command line?
unix - How to check permissions of a specific directory ... - Stack ...
I know that using ls -l "directory/directory/filename" tells me the permissions of a file. How do I do the same on a directory? I could obviously use ls -l on the directory higher in the hierarchy...