As per gnu make official doc: Variable and function references in recipes have identical syntax and semantics to references elsewhere in the makefile. They also have the same quoting rules: if you want a dollar sign to appear in your recipe, you must double it (‘$$’). For shells like the default shell, that use dollar … Read more
The linker is able to accept filenames too gcc app.o -l:libmy.so.1 -o app From man ld: -l namespec –library=namespec Add the archive or object file specified by namespec to the list of files to link. This option may be used any number of times. If namespec is of the form :filename, ld will search the … Read more
Yes, Docker is preventing you from mounting a remote volume inside the container as a security measure. If you trust your images and the people who run them, then you can use the –privileged flag with docker run to disable these security measures. Further, you can combine –cap-add and –cap-drop to give the container only … Read more
Try running (just after the failure) dmesg. Do you see a line like this? Out of memory: Kill process 23747 (cc1plus) score 15 or sacrifice child Killed process 23747, UID 2243, (cc1plus) total-vm:214456kB, anon-rss:178936kB, file-rss:5908kB Most likely that is your problem. Running make -j 8 runs lots of process which use more memory. The problem … Read more
You just need to escape it correctly. alias xxx=”svn status | awk ‘\$1 ==\”M\”{print \$2;}'”
I would suggest something like this: for i in *-doc-*.txt; do mv “$i” “${i/*-doc-/doc-}”; done ${i/*-doc-/doc-} replaces the first occurrence of *-doc- with doc-. If you need to do more than one replacement (see comment number 1), you need to use the ${var//Pattern/Replacement} variant. If you need to replace the beginning of the name you … Read more
Your tomcat/conf/Catalina/<host> can contain context descriptors that let you configure lots of things including defining “environment entries”, which are accessible from Java via JNDI. There are lots of ways to go about using it. Personally, I set an environment entry which is the file system path to my properties file. My app is built to … Read more
If you’re looking for something exactly like IOCP, you won’t find it, because it doesn’t exist. Windows uses a notify on completion model (hence I/O Completion Ports). You start some operation asynchronously, and receive a notification when that operation has completed. Linux applications (and most other Unix-alikes) generally use a notify on ready model. You … Read more
With your Bluetooth dongle plugged in, running the following command will tell you the device name and give its state: $ hciconfig The output should look something like this: hci0: Type: BR/EDR Bus: USB BD Address: 00:01:02:aa:bb:cc ACL MTU: 1021:8 SCO MTU: 64:1 DOWN RX bytes:1000 acl:0 sco:0 events:47 errors:0 TX bytes:1072 acl:0 sco:0 commands:47 … Read more
As you’re on a shared Linux box, you’ll have to ask the system administrator to do the following, probably. Create a startup script in /etc/init.d/solr. Copy this code, my Solr startup script, into that file: #!/bin/sh # Prerequisites: # 1. Solr needs to be installed at /usr/local/solr/example # 2. daemon needs to be installed # … Read more