added split-file.sh

1 files changed, 21 insertions, 0 deletions

diff --git a/split-file.sh b/split-file.sh
new file mode 100644
index 0000000..c8f785a
--- /dev/null
+++ b/split-file.sh
@@ -0,0 +1,21 @@
+#!/bin/bash
+
+if test "${#}" -ne 2; then
+    printf "%s\n" \
+        "split file into N parts" \
+        "usage: $(basename $0) <file.txt> <parts>"
+    exit 1
+fi
+
+if ! command -v split &>/dev/null; then
+    printf "%s\n" "split not found"
+    exit 1
+fi
+
+file="${1}"
+parts="${2}"
+filename="${file%.*}"
+extension="${file##*.}"
+total_lines=$(wc -l < "${file}")
+lines_per_part=$((total_lines / parts + 1))
+split -l "${lines_per_part}" -d --additional-suffix=".${extension}" "${file}" "${filename}_"