From man python: -u Force stdin, stdout and stderr to be totally unbuffered. On systems where it matters, also put stdin, stdout and stderr in binary mode. Note that there is internal buffering in xreadlines(), readlines() and file- object iterators (“for line in sys.stdin”) which is not influenced by this option. To work around this, … Read more
Silence all safe.directory warnings tl;dr Silence all warnings related to Git’s safe.directory system. Be sure to understand what you’re doing. git config –global –add safe.directory ‘*’ Long version Adapted from this post on I cannot add the parent directory to safe.directory in Git. I had the same issue and resolved it by disabling safe directory … Read more
Do the following: grep -Rnw ‘/path/to/somewhere/’ -e ‘pattern’ -r or -R is recursive ; use -R to search entirely -n is line number, and -w stands for match the whole word. -l (lower-case L) can be added to just give the file name of matching files. -e is the pattern used during the search Along … Read more
In my case, I changed in httpd.conf: AllowOverride None to AllowOverride All and it works.
I’m no expert here, but here’s something: Box 1, no NUMA: ~$ dmesg | grep -i numa [ 0.000000] No NUMA configuration found Box 2, some NUMA: ~$ dmesg | grep -i numa [ 0.000000] NUMA: Initialized distance table, cnt=8 [ 0.000000] NUMA: Node 4 [0,80000000) + [100000000,280000000) -> [0,280000000)
It is better to handle this with “with” to close the descriptor automatically for you. This will work with both 2.7 and python 3. with open(‘/path/to/my/file.txt’, ‘r’) as f: print(f.read())
This frankly seems like a much better solution: def get_uptime(): with open(‘/proc/uptime’, ‘r’) as f: uptime_seconds = float(f.readline().split()[0]) return uptime_seconds It also has the added benefit of not requiring any additional modules. Credits: Source
If you’re on using a glibc, then: #define _GNU_SOURCE #include <errno.h> extern char *program_invocation_name; extern char *program_invocation_short_name; See program_invocation_name(3) Under most Unices, __progname is also defined by the libc. The sole portable way is to use argv[0]
Use an array awk ‘{count[$3]++} END {for (word in count) print word, count[word]}’ file If you want “block” specifically: END {print count[“BLOCK”]}
This runs the script every minute of 2am (02:00, 02:01, 02:02 and so on): * 2 * * * While This runs the script at 02:13am (of each day of each month) 13 2 * * * * * * * * command to execute ┬ ┬ ┬ ┬ ┬ │ │ │ │ │ … Read more