The exec built-in command mirrors functions in the kernel, there are a family of them based on execve, which is usually called from C. exec replaces the current program in the current process, without forking a new process. It is not something you would use in every script you write, but it comes in handy on occasion. Here are some … Read more
‘adb push’ cannot push to data/data/ directory. However, you can do it by using a transfer station like this: adb shell It works for me,good luck to you.
What is sh? sh (or the Shell Command Language) is a programming language described by the POSIX standard. It has many implementations (ksh88, Dash, …). Bash can also be considered an implementation of sh (see below). Because sh is a specification, not an implementation, /bin/sh is a symlink (or a hard link) to an actual implementation on most POSIX systems. What is Bash? Bash … Read more
If you’ve exported the environment variable: you can simply refer to it by name in the makefile (make imports all the environment variables you have set): If you’ve not exported the environment variable, it is not accessible until you do export it, or unless you pass it explicitly on the command line: If you are using a C … Read more
Try the following. This is part of the item property weirdness. When you run Get-ItemProperty it does not return the value but instead the property. You have to use one more level of indirection to get to the value.
In all officially maintained versions of Python, the simplest approach is to use the subprocess.check_output function: check_output runs a single program that takes only arguments as input.1 It returns the result exactly as printed to stdout. If you need to write input to stdin, skip ahead to the run or Popen sections. If you want … Read more
You want awk. This would be a quick and dirty hack: awk -F “\”” ‘{print $2}’ /tmp/file.txt
Use the -s option BEFORE the command to specify the device, for example: See also http://developer.android.com/tools/help/adb.html#directingcommands
/bin/sh is usually some other shell trying to mimic The Shell. Many distributions use /bin/bash for sh, it supports source. On Ubuntu, though, /bin/dash is used which does not support source. Most shells use . instead of source. If you cannot edit the script, try to change the shell which runs it.
Using an ls –a and grep, how would you list the name of all of the files in /usr starting with the letter p or the letter r or the letter s using a single grep command? would this be right?