diff --git a/src/nix/build.md b/src/nix/build.md
index ee414dc86..0fbb39cc3 100644
--- a/src/nix/build.md
+++ b/src/nix/build.md
@@ -44,7 +44,7 @@ R""(
   `release.nix`:
 
   ```console
-  # nix build -f release.nix build.x86_64-linux
+  # nix build --file release.nix build.x86_64-linux
   ```
 
 * Build a NixOS system configuration from a flake, and make a profile
diff --git a/src/nix/copy.md b/src/nix/copy.md
index 25e0ddadc..199006436 100644
--- a/src/nix/copy.md
+++ b/src/nix/copy.md
@@ -15,7 +15,7 @@ R""(
   SSH:
 
   ```console
-  # nix copy -s --to ssh://server /run/current-system
+  # nix copy --substitute-on-destination --to ssh://server /run/current-system
   ```
 
   The `-s` flag causes the remote machine to try to substitute missing
diff --git a/src/nix/develop.md b/src/nix/develop.md
index c49b39669..1b5a8aeba 100644
--- a/src/nix/develop.md
+++ b/src/nix/develop.md
@@ -69,7 +69,7 @@ R""(
 * Run a series of script commands:
 
   ```console
-  # nix develop --command bash -c "mkdir build && cmake .. && make"
+  # nix develop --command bash --command "mkdir build && cmake .. && make"
   ```
 
 # Description
diff --git a/src/nix/eval.md b/src/nix/eval.md
index 3b510737a..48d5aa597 100644
--- a/src/nix/eval.md
+++ b/src/nix/eval.md
@@ -18,7 +18,7 @@ R""(
 * Evaluate a Nix expression from a file:
 
   ```console
-  # nix eval -f ./my-nixpkgs hello.name
+  # nix eval --file ./my-nixpkgs hello.name
   ```
 
 * Get the current version of the `nixpkgs` flake:
diff --git a/src/nix/flake-check.md b/src/nix/flake-check.md
index 07031c909..c8307f8d8 100644
--- a/src/nix/flake-check.md
+++ b/src/nix/flake-check.md
@@ -68,6 +68,6 @@ The following flake output attributes must be
 In addition, the `hydraJobs` output is evaluated in the same way as
 Hydra's `hydra-eval-jobs` (i.e. as a arbitrarily deeply nested
 attribute set of derivations). Similarly, the
-`legacyPackages`.*system* output is evaluated like `nix-env -qa`.
+`legacyPackages`.*system* output is evaluated like `nix-env --query --available `.
 
 )""
diff --git a/src/nix/nar-ls.md b/src/nix/nar-ls.md
index d373f9715..5a03c5d82 100644
--- a/src/nix/nar-ls.md
+++ b/src/nix/nar-ls.md
@@ -5,7 +5,7 @@ R""(
 * To list a specific file in a NAR:
 
   ```console
-  # nix nar ls -l ./hello.nar /bin/hello
+  # nix nar ls --long ./hello.nar /bin/hello
   -r-xr-xr-x                38184 hello
   ```
 
@@ -13,7 +13,7 @@ R""(
   format:
 
   ```console
-  # nix nar ls --json -R ./hello.nar /bin
+  # nix nar ls --json --recursive ./hello.nar /bin
   {"type":"directory","entries":{"hello":{"type":"regular","size":38184,"executable":true,"narOffset":400}}}
   ```
 
diff --git a/src/nix/nix.md b/src/nix/nix.md
index 1ef6c7fcd..8a850ae83 100644
--- a/src/nix/nix.md
+++ b/src/nix/nix.md
@@ -197,7 +197,7 @@ operate are determined as follows:
   of all outputs of the `glibc` package in the binary cache:
 
   ```console
-  # nix path-info -S --eval-store auto --store https://cache.nixos.org 'nixpkgs#glibc^*'
+  # nix path-info --closure-size --eval-store auto --store https://cache.nixos.org 'nixpkgs#glibc^*'
   /nix/store/g02b1lpbddhymmcjb923kf0l7s9nww58-glibc-2.33-123                 33208200
   /nix/store/851dp95qqiisjifi639r0zzg5l465ny4-glibc-2.33-123-bin             36142896
   /nix/store/kdgs3q6r7xdff1p7a9hnjr43xw2404z7-glibc-2.33-123-debug          155787312
@@ -208,7 +208,7 @@ operate are determined as follows:
   and likewise, using a store path to a "drv" file to specify the derivation:
 
   ```console
-  # nix path-info -S '/nix/store/gzaflydcr6sb3567hap9q6srzx8ggdgg-glibc-2.33-78.drv^*'
+  # nix path-info --closure-size '/nix/store/gzaflydcr6sb3567hap9q6srzx8ggdgg-glibc-2.33-78.drv^*'
   …
   ```
 * If you didn't specify the desired outputs, but the derivation has an
diff --git a/src/nix/path-info.md b/src/nix/path-info.md
index 6ad23a02e..2dda866d0 100644
--- a/src/nix/path-info.md
+++ b/src/nix/path-info.md
@@ -13,7 +13,7 @@ R""(
   closure, sorted by size:
 
   ```console
-  # nix path-info -rS /run/current-system | sort -nk2
+  # nix path-info --recursive --closure-size /run/current-system | sort -nk2
   /nix/store/hl5xwp9kdrd1zkm0idm3kkby9q66z404-empty                                                96
   /nix/store/27324qvqhnxj3rncazmxc4mwy79kz8ha-nameservers                                         112
   …
@@ -25,7 +25,7 @@ R""(
   readable sizes:
 
   ```console
-  # nix path-info -rsSh nixpkgs#rustc
+  # nix path-info --recursive --size --closure-size --human-readable nixpkgs#rustc
   /nix/store/01rrgsg5zk3cds0xgdsq40zpk6g51dz9-ncurses-6.2-dev      386.7K   69.1M
   /nix/store/0q783wnvixpqz6dxjp16nw296avgczam-libpfm-4.11.0          5.9M   37.4M
   …
@@ -34,7 +34,7 @@ R""(
 * Check the existence of a path in a binary cache:
 
   ```console
-  # nix path-info -r /nix/store/blzxgyvrk32ki6xga10phr4sby2xf25q-geeqie-1.5.1 --store https://cache.nixos.org/
+  # nix path-info --recursive /nix/store/blzxgyvrk32ki6xga10phr4sby2xf25q-geeqie-1.5.1 --store https://cache.nixos.org/
   path '/nix/store/blzxgyvrk32ki6xga10phr4sby2xf25q-geeqie-1.5.1' is not valid
 
   ```
@@ -57,7 +57,7 @@ R""(
   size:
 
   ```console
-  # nix path-info --json --all -S \
+  # nix path-info --json --all --closure-size \
     | jq 'map(select(.closureSize > 1e9)) | sort_by(.closureSize) | map([.path, .closureSize])'
   [
     …,
diff --git a/src/nix/search.md b/src/nix/search.md
index 4caa90654..0c5d22549 100644
--- a/src/nix/search.md
+++ b/src/nix/search.md
@@ -52,12 +52,12 @@ R""(
 * Search for packages containing `neovim` but hide ones containing either `gui` or `python`:
 
   ```console
-  # nix search nixpkgs neovim -e 'python|gui'
+  # nix search nixpkgs neovim --exclude 'python|gui'
   ```
   or
 
   ```console
-  # nix search nixpkgs neovim -e 'python' -e 'gui'
+  # nix search nixpkgs neovim --exclude 'python' --exclude 'gui'
   ```
 
 # Description
diff --git a/src/nix/shell.md b/src/nix/shell.md
index 13a389103..1668104b1 100644
--- a/src/nix/shell.md
+++ b/src/nix/shell.md
@@ -19,26 +19,26 @@ R""(
 * Run GNU Hello:
 
   ```console
-  # nix shell nixpkgs#hello -c hello --greeting 'Hi everybody!'
+  # nix shell nixpkgs#hello --command hello --greeting 'Hi everybody!'
   Hi everybody!
   ```
 
 * Run multiple commands in a shell environment:
 
   ```console
-  # nix shell nixpkgs#gnumake -c sh -c "cd src && make"
+  # nix shell nixpkgs#gnumake --command sh --command "cd src && make"
   ```
 
 * Run GNU Hello in a chroot store:
 
   ```console
-  # nix shell --store ~/my-nix nixpkgs#hello -c hello
+  # nix shell --store ~/my-nix nixpkgs#hello --command hello
   ```
 
 * Start a shell providing GNU Hello in a chroot store:
 
   ```console
-  # nix shell --store ~/my-nix nixpkgs#hello nixpkgs#bashInteractive -c bash
+  # nix shell --store ~/my-nix nixpkgs#hello nixpkgs#bashInteractive --command bash
   ```
 
   Note that it's necessary to specify `bash` explicitly because your
diff --git a/src/nix/store-ls.md b/src/nix/store-ls.md
index 836efce42..14c4627c9 100644
--- a/src/nix/store-ls.md
+++ b/src/nix/store-ls.md
@@ -5,7 +5,7 @@ R""(
 * To list the contents of a store path in a binary cache:
 
   ```console
-  # nix store ls --store https://cache.nixos.org/ -lR /nix/store/0i2jd68mp5g6h2sa5k9c85rb80sn8hi9-hello-2.10
+  # nix store ls --store https://cache.nixos.org/ --long --recursive /nix/store/0i2jd68mp5g6h2sa5k9c85rb80sn8hi9-hello-2.10
   dr-xr-xr-x                    0 ./bin
   -r-xr-xr-x                38184 ./bin/hello
   dr-xr-xr-x                    0 ./share
@@ -15,7 +15,7 @@ R""(
 * To show information about a specific file in a binary cache:
 
   ```console
-  # nix store ls --store https://cache.nixos.org/ -l /nix/store/0i2jd68mp5g6h2sa5k9c85rb80sn8hi9-hello-2.10/bin/hello
+  # nix store ls --store https://cache.nixos.org/ --long /nix/store/0i2jd68mp5g6h2sa5k9c85rb80sn8hi9-hello-2.10/bin/hello
   -r-xr-xr-x                38184 hello
   ```
 
diff --git a/src/nix/upgrade-nix.md b/src/nix/upgrade-nix.md
index 08757aebd..cce88c397 100644
--- a/src/nix/upgrade-nix.md
+++ b/src/nix/upgrade-nix.md
@@ -11,7 +11,7 @@ R""(
 * Upgrade Nix in a specific profile:
 
   ```console
-  # nix upgrade-nix -p ~alice/.local/state/nix/profiles/profile
+  # nix upgrade-nix --profile ~alice/.local/state/nix/profiles/profile
   ```
 
 # Description
diff --git a/src/nix/verify.md b/src/nix/verify.md
index cc1122c02..e1d55eab4 100644
--- a/src/nix/verify.md
+++ b/src/nix/verify.md
@@ -12,7 +12,7 @@ R""(
   signatures:
 
   ```console
-  # nix store verify -r -n2 --no-contents $(type -p firefox)
+  # nix store verify --recursive --sigs-needed 2 --no-contents $(type -p firefox)
   ```
 
 * Verify a store path in the binary cache `https://cache.nixos.org/`: