The UNIX® Standard | www.opengroup.org
May 22, 2025 · 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 includes a rich feature …
How can I extract a predetermined range of lines from a text file on Unix?
Sep 17, 2008 · I need to extract a certain section of this file (i.e. the data for a single database) and place it in a new file. I know both the start and end line numbers of the data that I want. Does anyone …
unix - What is the meaning of "POSIX"? - Stack Overflow
Nov 23, 2009 · 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 defines a …
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
How can I send an email through the UNIX mailx command?
Feb 17, 2010 · How can I send an email through the UNIX mailx command? Asked 15 years, 10 months ago Modified 6 years, 1 month ago Viewed 809k times
shell - Listing only directories in UNIX - Stack Overflow
Sep 8, 2010 · 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?
Converting unix time into date-time via excel - Stack Overflow
Explanation Unix system represent a point in time as a number. Specifically the number of seconds* since a zero-time called the Unix epoch which is 1/1/1970 00:00 UTC/GMT. This number of seconds …
How to find out what group a given user has? - Stack Overflow
Dec 8, 2008 · In Unix/Linux, how do you find out what group a given user is in via command line?
bash - Parsing JSON with Unix tools - Stack Overflow
Dec 24, 2009 · The standard POSIX/Single Unix Specification shell is a very limited language which doesn't contain facilities for representing sequences (list or arrays) or associative arrays (also known …
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...