From 55099c7d62a1ecf2bc02d1075048f30ad01f8a05 Mon Sep 17 00:00:00 2001
From: Lee Katz <lskatz@gmail.com>
Date: Wed, 12 Oct 2022 10:03:08 -0400
Subject: [PATCH] elink, esearch: add page (#8957)

---
 pages/linux/elink.md   | 13 +++++++++++++
 pages/linux/esearch.md | 13 +++++++++++++
 2 files changed, 26 insertions(+)
 create mode 100644 pages/linux/elink.md
 create mode 100644 pages/linux/esearch.md

diff --git a/pages/linux/elink.md b/pages/linux/elink.md
new file mode 100644
index 000000000..e39709539
--- /dev/null
+++ b/pages/linux/elink.md
@@ -0,0 +1,13 @@
+# elink
+
+> Look up precomputed neighbors within a database, or find associated records in other databases.
+> It is part of the `edirect` package.
+> More information: <https://www.ncbi.nlm.nih.gov/books/NBK179288/>.
+
+- Search pubmed then find related sequences:
+
+`esearch -db pubmed -query "{{selective serotonin reuptake inhibitor}}" | elink -target nuccore`
+
+- Search nucleotide then find related biosamples:
+
+`esearch -db nuccore -query "{{insulin [PROT] AND rodents [ORGN]}}" | elink -target biosample`
diff --git a/pages/linux/esearch.md b/pages/linux/esearch.md
new file mode 100644
index 000000000..1c04423ba
--- /dev/null
+++ b/pages/linux/esearch.md
@@ -0,0 +1,13 @@
+# esearch
+
+> Perform a new Entrez search using terms in indexed fields.
+> It is part of the `edirect` package.
+> More information: <https://www.ncbi.nlm.nih.gov/books/NBK179288/>.
+
+- Search the pubmed database for selective serotonin reuptake inhibitor:
+
+`esearch -db pubmed -query "{{selective serotonin reuptake inhibitor}}"`
+
+- Search the nucleotide database for sequences whose metadata contain insulin and rodents:
+
+`esearch -db nuccore -query "{{insulin [PROT] AND rodents [ORGN]}}"`