dquote> result of a execution a program in linux shell
It means you’ve executed a line of code with only one double-quote character, like this: The shell is waiting for the other quote.
linux
Bind failed: Address already in use
The error usually means that the port you are trying to open is being already used by another application. Try using netstat to see which ports are open and then use an available port. Also check if you are binding to the right ip address (I am assuming it would be localhost)
Why cannot the JVM auto expand heap memory to the configured Xmx3072m in linux & jdk1.6.0_32, and FullGC occurs very frequently
The RES value isn’t how much memory the process is using, but how much actual RAM it uses. This doesn’t include swapped pages and allocated but unmapped pages. Make sure you have enough free memory on the system itself, you can run free, or even top should print above how much memory is in use. The output of top suggests that the … Read more
Compiling C++ on remote Linux machine – “clock skew detected” warning
That message is usually an indication that some of your files have modification times later than the current system time. Since make decides which files to compile when performing an incremental build by checking if a source files has been modified more recently than its object file, this situation can cause unnecessary files to be built, or … Read more
Is there a “goto” statement in bash?
No, there is not; see §3.2.4 “Compound Commands” in the Bash Reference Manual for information about the control structures that do exist. In particular, note the mention of break and continue, which aren’t as flexible as goto, but are more flexible in Bash than in some languages, and may help you achieve what you want. … Read more
-bash: fork: Cannot allocate memory
I also faced this issue with my Ubuntu 14.04 desktop. Even these basic command showed Can’t allocate memory error. On investigating, found that system is using all the memory for Caching and is not freeing up memory. This is called Cache Ballooning and solved this by clearing the cache.
What is the difference between “#!/usr/bin/env bash” and “#!/usr/bin/bash”?
Running a command through /usr/bin/env has the benefit of looking for whatever the default version of the program is in your current environment. This way, you don’t have to look for it in a specific place on the system, as those paths may be in different locations on different systems. As long as it’s in your path, it … Read more
valgrind – Address —- is 0 bytes after a block of size 8 alloc’d
strcpy adds a null terminator character ‘\0’. You forgot to allocate space for it: You need to add space for 5 characters: 4 for “.tde” suffix, and one more for the ‘\0’ terminator. Your current code allocates only 4, so the last write is done into the space immediately after the block that you have … Read more
What is Options +FollowSymLinks?
You might try searching the internet for “.htaccess Options not allowed here”. A suggestion I found (using google) is: Check to make sure that your httpd.conf file has AllowOverride All. A .htaccess file that works for me on Mint Linux (placed in the Laravel /public folder): Hope this helps you. Otherwise you could ask a … Read more
How to use regex with find command?
Note that you need to specify .*/ in the beginning because find matches the whole path. Example: My version of find: