I’d say you just need to prepend ‘call’ to your activate.bat invocation, to ensure that the current batch file is resumed after activate is executed: call %~dp0env\Scripts\activate.bat Consider doing the same for deactivate.bat. Furthermore, if you want to ensure that the current cmd.exe environment is not polluted by a call to your batch file, consider … Read more
Count the entries in /proc/<pid>/fd/. The hard and soft limits applying to the process can be found in /proc/<pid>/limits.
At launch, Java was the only officially supported programming language for building distributable third-party Android software. Android Native Development Kit (Android NDK) which will allow developers to build Android software components with C and C++. In addition to delivering support for native code, Google is also extending Android to support popular dynamic scripting languages. Earlier … Read more
It’s fine in all current browsers. The only browser that got <script id> wrong was Netscape 4, which we stopped caring about a long, long time ago. That quirksmode page seems to be badly out of date, what with its use of language attributes, script <!– hiding, and application/x-javascript. Its advice about avoiding <script> in … Read more
I used to do this with xxd: echo -n 5a | xxd -r -p But then I realised that in Debian/Ubuntu, xxd is part of vim-common and hence might not be present in a minimal system. To also avoid Perl (IMHO also not part of a minimal system), I ended up using sed, xargs, and … Read more
The common way of doing that is assigning the arguments to local variables in the function, i.e.: copy() { local from=${1} local to=${2} # … } Another solution may be getopt-style option parsing. copy() { local arg from to while getopts ‘f:t:’ arg do case ${arg} in f) from=${OPTARG};; t) to=${OPTARG};; *) return 1 # … Read more
grep -Fxvf file1 file2 What the flags mean: -F, –fixed-strings Interpret PATTERN as a list of fixed strings, separated by newlines, any of which is to be matched. -x, –line-regexp Select only those matches that exactly match the whole line. -v, –invert-match Invert the sense of matching, to select non-matching lines. -f FILE, –file=FILE Obtain … Read more
I was searching help on this too. It took me a while, but here is what I did that worked really well. <Target Name=”AfterBuild”> <ItemGroup> <ANTLR Include=”..\Data\antlrcs\**\*.*” /> </ItemGroup> <Copy SourceFiles=”@(ANTLR)” DestinationFolder=”$(TargetDir)\%(RecursiveDir)” SkipUnchangedFiles=”true” /> </Target> This recursively copied the contents of the folder named antlrcs to the $(TargetDir).
First, you are not increasing the counter. Changing COUNTER=$((COUNTER)) into COUNTER=$((COUNTER + 1)) or COUNTER=$[COUNTER + 1] will increase it. Second, it’s trickier to back-propagate subshell variables to the callee as you surmise. Variables in a subshell are not available outside the subshell. These are variables local to the child process. One way to solve … Read more
I think the answer you are after is implied (if not stated) by Vinko‘s answer, though it is not spelled out simply. To distinguish whether VAR is set but empty or not set, you can use: if [ -z “${VAR+xxx}” ]; then echo “VAR is not set at all”; fi if [ -z “$VAR” ] … Read more