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Showing the stack trace from a running Python application
... the same thing, except it communicates with the running process through a pipe (to allow for debugging backgrounded processes etc). Its a bit large to post here, but I've added it as a python cookbook recipe.
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How to add a progress bar to a shell script?
...will respond similarly to SIGUSR1. If this facility is available, you can pipe your input through dd to monitor the number of bytes processed.
Alternatively, you can use lsof to obtain the offset of the file's read pointer, and thereby calculate the progress. I've written a command, named pmonito...
How to skip “are you sure Y/N” when deleting files in batch files
...early identical post provides the very useful alternative of using an echo pipe if no force or quiet switch is available. For instance, I think it's the only way to bypass the Y/N prompt in this example.
Echo y|NETDOM COMPUTERNAME WorkComp /Add:Work-Comp
In a general sense you should first look a...
Determine if a function exists in bash
..., but when testing if something is a function, it's slow since you have to pipe to grep or use backticks, both of which spawn a subprocess.
– Lloeki
Dec 19 '13 at 8:46
1
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Test if executable exists in Python?
...turn subprocess.call("type " + cmd, shell=True,
stdout=subprocess.PIPE, stderr=subprocess.PIPE) == 0
What we're doing here is using the builtin command type and checking the exit code. If there's no such command, type will exit with 1 (or a non-zero status code anyway).
The bit about std...
Git resolve conflict using --ours/--theirs for all files
...o each matched file is only output once.
The matched file names are then piped to xargs, a utility that breaks up the piped input stream into individual arguments for git checkout --ours or --theirs
More at this link.
Since it would be very inconvenient to have to type this every time at the co...
How can one use multi threading in PHP applications
...i++) {
// open ten processes
for ($j=0; $j<10; $j++) {
$pipe[$j] = popen('script2.php', 'w');
}
// wait for them to finish
for ($j=0; $j<10; ++$j) {
pclose($pipe[$j]);
}
}
shar...
UnicodeEncodeError: 'latin-1' codec can't encode character
...
compress
if set, compression is enabled
named_pipe
if set, a named pipe is used to connect (Windows only)
init_command
command which is run once the connection is created
read_default_file
file from which default client val...
Is it possible to cherry-pick a commit from another git repository?
...mit specified by its SHA (-1 for one single commit alone). This
patch is piped to git am, which applies the patch locally (-3 means
trying the three-way merge if the patch fails to apply cleanly). Hope
that explains.
...
How to prevent a background process from being stopped after closing SSH client in Linux
...- main
And there you go, spawn whatever. the <(:) opens an anonymous pipe via process substitution, which dies, but the pipe sticks around because you have a handle to it. I usually do a sleep 1 instead of : because its slightly racy, and I'd get a "file busy" error -- never happens if a real ...