Try setting C_INCLUDE_PATH (for C header files) or CPLUS_INCLUDE_PATH (for C++ header files). As Ciro mentioned, CPATH will set the path for both C and C++ (and any other language). More details in GCC’s documentation.
General rule: quote it if it can either be empty or contain spaces (or any whitespace really) or special characters (wildcards). Not quoting strings with spaces often leads to the shell breaking apart a single argument into many. $? doesn’t need quotes since it’s a numeric value. Whether $URL needs it depends on what you … Read more
To execute a cmd before every command entered, set a trap on DEBUG. Eg. trap date DEBUG To execute that command before emitting a prompt, set PROMPT_COMMAND: PROMPT_COMMAND=date
Setup 1: glibc without dedicated GCC This setup might work and is quick as it does not recompile the whole GCC toolchain, just glibc. The only problem I have with this setup is that I haven’t found a nice way to use runtime objects such as crt1.o, crti.o, and crtn.o provided by our glibc, and … Read more
From fork(2): * The child inherits copies of the parent’s set of open file descrip- tors. Each file descriptor in the child refers to the same open file description (see open(2)) as the corresponding file descriptor in the parent. This means that the two descriptors share open file status flags, current file offset, and signal-driven … Read more
You cannot, at least not for the process being killed. What you can do is arrange for the parent process to watch for the child process’s death, and act accordingly. Any decent process supervision system, such as daemontools, has such a facility built in.
First of all, you should consider broadcast obsolete, specially INADDR_BROADCAST (255.255.255.255). Your question highlights exactly one of the reasons that broadcast is unsuitable. It should die along with IPv4 (hopefully). Note that IPv6 doesn’t even have a concept of broadcast (multicast is used, instead). INADDR_BROADCAST is limited to the local link. Nowadays, it’s only visible … Read more
You can add one of the Java path to PATH variable using the following command. export PATH=$PATH:/usr/java/jre1.6.0_24/bin/ You can add this line to .bashrc file in your home directory. Adding this to .bashrc will ensure everytime you open bash it will be PATH variable is updated.
It’s a “quirk” in the way the JVM looks up the zoneinfo file. See Bug ID 6456628. The easiest workaround is to make /etc/localtime a symlink to the correct zoneinfo file. For Pacific time, the following commands should work: # sudo cp /etc/localtime /etc/localtime.dist # sudo ln -fs /usr/share/zoneinfo/America/Los_Angeles /etc/localtime I haven’t had any problems … Read more
sed ‘:a;/0$/{N;s/\n//;ba}’ In a loop (branch ba to label :a), if the current line ends in 0 (/0$/) append next line (N) and remove inner newline (s/\n//). awk: awk ‘{while(/0$/) { getline a; $0=$0 a; sub(/\n/,_) }; print}’ Perl: perl -pe ‘$_.=<>,s/\n// while /0$/’ bash: while read line; do if [ ${line: -1:1} != “0” … Read more