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Python: Best way to add to sys.path relative to the current running script
...rectory full of scripts (let's say project/bin ). I also have a library located in project/lib and want the scripts to automatically load it. This is what I normally use at the top of each script:
...
Remove blank lines with grep
...e only one blank line per sequence, try
grep -v "unwantedThing" foo.txt | cat -s
cat -s suppresses repeated empty output lines.
Your output would go from
match1
match2
to
match1
match2
The three blank lines in the original output would be compressed or "squeezed" into one blank line.
...
Run a string as a command within a Bash script
...cause .gitignore ignores this folder:
touch $GENERATED
COPY_BUILD_FILE=$( cat <<COPY_BUILD_FILE_HEREDOC
cp
$build_gradle
$GENERATED/build.gradle
COPY_BUILD_FILE_HEREDOC
)
$COPY_BUILD_FILE
GRADLE_COMMAND=$( cat <<GRADLE_COMMAND_HEREDOC
gradle run
--...
Hook up Raspberry Pi via Ethernet to laptop without router? [closed]
... potentially recover the Raspberry Pi, it will most likely be in a rural location and I'd like to turn off the Pi at that point safely.
...
What is __main__.py?
...ython -m my_program
You'll have to decide for yourself whether your application could benefit from being executed like this.
Note that a __main__ module usually doesn't come from a __main__.py file. It can, but it usually doesn't. When you run a script like python my_program.py, the script will...
What is the difference between exit(0) and exit(1) in C?
... is the difference between exit(0) and exit(1) in C language?
exit(0) indicates successful program termination & it is fully portable, While
exit(1) (usually) indicates unsucessful termination. However, it's usage is non-portable.
Note that the C standard defines EXIT_SUCCESS and EXIT_FAILURE ...
Why are Perl 5's function prototypes bad?
...ar context returns the final element of the list. Your second-to-last invocation of foo() prints 2 because that is the final element in your two element slice. Change to my @array = qw(foo bar baz) and you'll see the difference. (As an aside, this is why I don't initialize arrays/lists to 0- or 1...
Can I recover a branch after its deletion in Git?
...splay the commit metadata (author, creation date and commit message):
git cat-file -p 48540dfa438ad8e442b18e57a5a255c0ecad0560
To see also the diffs:
git log -p 48540dfa438ad8e442b18e57a5a255c0ecad0560
Once you found your commit, then create a branch on this commit with:
git branch commit_res...
How to print matched regex pattern using awk?
...s situation. Example (replace line with matched group "yyy" from line):
$ cat testfile
xxx yyy zzz
yyy xxx zzz
$ cat testfile | sed -r 's#^.*(yyy).*$#\1#g'
yyy
yyy
Relevant manual page: https://www.gnu.org/software/sed/manual/sed.html#Back_002dreferences-and-Subexpressions
...
Abort makefile if variable not set
... exists in the root
# directory, e.g. left by an accidental `make -t` invocation.
.PHONY : __check_defined_FORCE
__check_defined_FORCE :
Usage:
foo :|check-defined-BAR
Notice that the check-defined-BAR is listed as the order-only (|...) prerequisite.
Pros:
(arguably) a more clean syntax
...