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Remove the last line from a file in Bash
...ing a line, while $ means "the last line in the file". When specifying a location (called "range" in sed lingo) before a command, that command is only applied to the specified location. So, this command explicitly says "in the range of the last line in a file, delete it". Quite slick and straight to...
How to see log files in MySQL?
...queries)
The Slow Query Log. Ιt consists of "slow" SQL statements (as
indicated by its name).
By default no log files are enabled in MYSQL. All errors will be shown in the syslog (/var/log/syslog).
To Enable them just follow below steps:
step1: Go to this file (/etc/mysql/conf.d/mysqld_safe_sys...
How can I replace a newline (\n) using sed?
..., too. See Patrick Dark answer above about using 'tr' in a subshell like ` cat file | echo $(tr "\012" " ") ` which does the trick. Nifty.
– Bernie Reiter
Mar 28 '19 at 11:54
...
Multiple commands in gdb separated by some sort of delimiter ';'?
..."s")) ; print(gdb.execute("bt"))
It's possible to wrap this up into a dedicated command, here called "cmds", backed by a python definition.
Here's an example .gdbinit extended with a function to run multiple commands.
# multiple commands
python
from __future__ import print_function
import gdb
c...
Python, Unicode, and the Windows console
...; print type(line), len(line); \
sys.stdout.write(line); print line' | cat
None
<type 'unicode'> 2
Б
Б
There's some more information on that page, well worth a read.
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What is the difference between __init__ and __call__?
... answered Mar 12 '12 at 8:13
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How to commit changes to a new branch
...ad of git checkout your-new-branch ?
– Schrodinger's'Cat
Mar 14 '15 at 1:21
1
how about if I alre...
Regular expression to match DNS hostname or IP Address?
...th a digit.
http://en.wikipedia.org/wiki/Hostname
The original specification of
hostnames in RFC
952,
mandated that labels could not start
with a digit or with a hyphen, and
must not end with a hyphen. However, a
subsequent specification (RFC
1123)
permitted hostname labels to s...
What is time_t ultimately a typedef to?
...e bottom line is that the type of time_t is not guaranteed in the C specification.
The time_t datatype is a data type in
the ISO C library defined for storing
system time values. Such values are
returned from the standard time()
library function. This type is a
typedef defined in the s...
How to prune local tracking branches that do not exist on remote anymore
...nd for a future git release that will do this? This command looks like my cat has been on my laptop
– Bron Davies
Sep 14 '16 at 20:02
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