EVAL(1)

💅 EVAL(1) — the fish-shell girlies' guide ✨

okay so real talk, this is eval from fish-shell, and bestie, she's a whole vibe. let me tell you everything, no gatekeeping 💖

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🌸 NAME 🌸

eval — evaluate the specified commands. that's it. that's the whole mood. ✨

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🎀 SYNOPSIS 🎀

eval [COMMANDS ...]

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🦋 DESCRIPTION 🦋

okay so here's the tea: eval takes the parameters you give it and evaluates them as a command. like, it actually runs them. main character energy fr fr 💅

and if you pass more than one parameter? no worries, she's not gonna get confused — all the parameters get joined together using a space character as a separator. so eval a b c is lowkey just a b c joined with spaces. slay. 🌈

💡 little side note bestie: if the command you're evaluating does not need access to stdin, consider using source instead. she's the better fit in that case, iykyk 🫶

and also — if you don't need any piping or other compound shell constructs, there's another option: variable-expansion-as-command. it looks like this:

set cmd ls -la; $cmd

yep, that's it. no eval needed. iconic behavior honestly 👑

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🍓 EXAMPLE 🍓

okay so this example is genuinely so cute — it calls the ls command and then truncates each filename to the first 12 characters. the way that works is honestly so satisfying 😭✨

set cmd ls \| cut -c 1-12
eval $cmd

like, eval looks at $cmd, expands it, and runs the whole pipeline. chef's kiss. 🔥

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👑 Copyright 👑

fish-shell developers — protecting the whole squad since forever 💜

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🧚 and that's the page, bestie!! this was EVAL(1) from fish-shell, version 4.9, dated Sep 08, 2026. go forth and evaluate responsibly, mwah 💋✨🎀