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Closed 9 years ago.
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alias bp="cat $# > $#.BACK"
My second idea was:
alias bp="cp $#{,.BACK}"
So i want to have a command to backup a file.
It does not raise any error but it simply doesn't work.
Aliases are purely a textual replacement. If you want to use or manipulate the arguments, you need to create a function:
bp () {
for file; do
cp -i "$file" "$file".BACK
done
}
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Closed 2 years ago.
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When I was setting up my Ubuntu environment, I think I mistyped and did something like this:
echo 'srouce /opt/whatever'
And now when I open terminal, the first line is always:
srouce: command not found
How can I get fix this issue?
Fix the misspelling in your shell startup files:
sed -i 's/srouce/source/' .bashrc .profile
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Closed 2 years ago.
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I want to delete a #tem.txt# called # that for some reason using emacs appeared
is between two # and I have not been able to remove it using rm, rm -f, unlink
See my file
Since '#' is a special character, you can try rm \#tem.txt\#
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Closed 2 years ago.
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I have over 1,000 files that I will like to change one character on the filename, Ex: GM001001, GM001002, GM001003, etc.. to be rename to GX001001, GX001002, GX001003, etc... As you can see the common denominator will be the M to be replace for an X.
You can combine mv with string replace to achieve this:
for f in $(ls)
do
mv $f ${f/GM/GX}
done
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Closed 7 years ago.
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Error when running this command, i think the command is clear to get the idea.
cp file.txt /folder/*/*/*/file.txt
You need a loop to do that:
for dir in /folder/*/*/*/; do cp file.txt "$dir"; done
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Closed 8 years ago.
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So I used "shuf" to make a word-list, The problem is when I run the command shuf -i 0500000000-0599999999 -o passwords.lst it doesn't type the first number which is '0' so I want a command to type that '0' into the beginning of every-line, if it's not possible with shuf any command will help.
This piped command will simply prepend a zero:
shuf -i 0500000000-0599999999|sed s/^/0/ > passwords.lst