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- The UNIX® Standard | www. opengroup. org
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 set, and its core volumes are simultaneously the IEEE Portable Operating System Interface (POSIX) standard and the ISO IEC 9945 standard
- What are the special dollar sign shell variables?
In Bash, there appear to be several variables which hold special, consistently-meaning values For instance, myprogram amp;; echo $! will return the PID of the process which backgrounded myprog
- bash - Shell equality operators (=, ==, -eq) - Stack Overflow
unix bash shell script equal comparison operator is not comparing 1 Equal and not equal operators not
- What does the line #! bin sh mean in a UNIX shell script?
When you try to execute a program in unix (one with the executable bit set), the operating system will look at the first few bytes of the file These form the so-called "magic number", which can be used to decide the format of the program and how to execute it #! corresponds to the magic number 0x2321 (look it up in an ascii table)
- unix - How to check permissions of a specific directory . . . - Stack . . .
In GNU Linux, try to use ls, namei, getfacl, stat For Dir [flying@lempstacker ~]$ ls -ldh tmp drwxrwxrwt 23 root root 4 0K Nov 8 15:41 tmp [flying@lempstacker ~]$ namei -l tmp f: tmp dr-xr-xr-x root root drwxrwxrwt root root tmp [flying@lempstacker ~]$ getfacl tmp getfacl: Removing leading ' ' from absolute path names # file: tmp # owner: root # group: root # flags: --t user::rwx
- How to check if $? is not equal to zero in unix shell scripting?
unix; Share Improve this question Follow edited Oct 15, 2015 at 20:29 Keith Thompson 265k 46 46 gold
- In Unix, how do you remove everything in the current directory and . . .
First, if you look at the rm command man page (man rm under most Unix) you notice that –r means "remove the contents of directories recursively" So, doing rm -r alone would delete everything in the current directory and everything bellow it
- unix - How to get PID of process by specifying process name and store . . .
Solution (Exact Process Name Match) pgrep -x <process_name> | xargs kill -9 (incidentally, for this specific use case, might as well do pkill -9 -x <process_name>, but the question asked how to get the PID in general)
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