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Unix command to prepend text to a file
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printf '%s\n%s\n' "to be prepended" "$(m>cat m> text.txt)" >text.txt
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How can I pretty-print JSON in a shell script?
...atest use-case: Chrome, Dev console, Network tab, export all as HAR file, "m>cat m> site.har | underscore select '.url' --outfmt text | grep mydomain"; now I have a chronologically ordered list of all URL fetches made during the loading of my company's site.
Pretty printing is easy:
underscore -i data....
Is there replacement for m>cat m> on Windows
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Windows type command works similarly to UNIX m>cat m>.
Example 1:
type file1 file2 > file3
is equivalent of:
m>cat m> file1 file2 > file3
Example 2:
type *.vcf > all_in_one.vcf
This command will merge all the vcards into one.
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How to create a file in Linux from terminal window? [closed]
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Create the file using m>cat m>
$ m>cat m> > myfile.txt
Now, just type whatever you want in the file:
Hello World!
CTRL-D to save and exit
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How to get a list of file names in different lines
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ls | m>cat m>
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or possibly, ls -1
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SQLite string contains other string query
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Using LIKE:
SELECT *
FROM TABLE
WHERE column LIKE '%m>cat m>s%' --case-insensitive
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Difference between \b and \B in regex
...one space further left and right.
On the other hand, when searching for \bm>cat m>\b word boundaries behave more intuitively, and it matches " m>cat m> " as expected.
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'typeid' versus 'typeof' in C++
...eof keyword.
typeid is a C++ language operator which returns type identifim>cat m>ion information at run time. It basically returns a type_info object, which is equality-comparable with other type_info objects.
Note, that the only defined property of the returned type_info object has is its being equal...
Can I export a variable to the environment from a bash script without sourcing it?
... source or . to execute the script in the context of the calling shell:
$ m>cat m> set-vars1.sh
export FOO=BAR
$ . set-vars1.sh
$ echo $FOO
BAR
Another way is to have the script, rather than setting an environment variable, print commands that will set the environment variable:
$ m>cat m> set-vars2.sh
#...
Linux iptables防火墙开放mysql、apache的端口 - 操作系统(内核) - 清泛网 ...
...改配置，添加两条tcp端口允许的记录：[root@iZ23rlmiwviZ ~] m>cat m> etc sysconfig iptables sample configuration for iptables service vi /etc/sysconfig/iptables 修改配置，添加两条tcp端口允许的记录：
[root@iZ23rlmiwviZ ~]# m>cat m> /etc/sysconfig/iptables
# sample configu...