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merge arith and hex headers
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README.md
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README.md
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@ -17,13 +17,15 @@ most (but not all) stuff that's written for bash will work in zsh too.
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if it just says `(sh)` then it'll probably work on anything,
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but probably depends on GNU awk.
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### [arith](/sh/arith)
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### [arith](/sh/arith) + [hex](/sh/hex)
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(zsh) does arithmetic using shell expansion.
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(zsh) does arithmetic using the shell.
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```
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$ arith 10**(6/20.)
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1.9952623149688795
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$ hex 0x221EA8-0x212020
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0000FE88
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```
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### [aur](/sh/aur)
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@ -99,15 +101,6 @@ $ e /etc/sudoers
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(zsh) asks you to update most of the git repos it finds. i don't really use this.
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### [hex](/sh/hex)
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(zsh) same as `arith` but outputs as `%08X`.
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```
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$ hex 0x221EA8-0x212020
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0000FE88
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```
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### [is\_empty](/sh/is_empty)
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(bash) returns 0 if the directory given by $1 is empty.
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