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Running multiple commands with xargs
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cat a.txt | xargs -d $'\n' sh -c 'for arg do command1 "$arg"; command2 "$arg"; ...; done' _
...or, without a Useless Use Of cat:
<a.txt xargs -d $'\n' sh -c 'for arg do command1 "$arg"; command2 "$arg"; ...; done' _
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How can I troubleshoot my Perl CGI script?
...rors, check to
ensure that your script has the right line endings. If you
FTP in binary mode, checkout from CVS, or something else that
does not handle line end translation, the web server may see
your script as one big line. Transfer Perl scripts in ASCII
mode.
Is the script complaining about in...
C/C++ include header file order
... Yes, I was referring to overruling standard behavior. It could happen by accident just as, for example, breaking the ODR can happen by accident. The solution is not to use practices that hide when such accidents happen, but to use practices that are most likely to make them blow up as loudly as pos...
How to parse a string to an int in C++?
... answered Jul 6 '12 at 0:48
CC.CC.
2,51022 gold badges1616 silver badges1313 bronze badges
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examining history of deleted file
...bversion, how can I look at it's history and contents? If I try to do svn cat or svn log on a nonexistent file, it complains that the file doesn't exist.
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unix - head AND tail of file
... file.txt
And if you need to uses pipes for some reason then like this:
cat file.txt | (head; tail)
Note: will print duplicated lines if number of lines in file.txt is smaller than default lines of head + default lines of tail.
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Confused about stdin, stdout and stderr?
... Because those aren't technically files. They're device nodes, indicating a specific device to write to. UNIX may present everything to you as a file abstraction but that doesn't make it so at the deepest levels.
– paxdiablo
Aug 2 '10 at 5:44
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array_push() with key value pair
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So what about having:
$data['cat']='wagon';
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How to deploy correctly when using Composer's develop / production switch?
...f i'm wrong). So basically the above solution only works with "old-school" FTP-deployment !? Please let's discuss this further...
– Sliq
Feb 20 '14 at 16:39
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Commenting in a Bash script inside a multiline command
...ble to put comment lines in between your commands
# output MYSQLDUMP file
cat ${MYSQLDUMP} | \
# simplify the line
sed '/created_at/d' | \
# create some newlines
tr ",;" "\n" | \
# use some sed magic
sed -e 's/[asbi]:[0-9]*[:]*//g' -e '/^[{}]/d' -e 's/""//g' -e '/^"{/d' | \
# more magic
sed -n -e '...