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-rw-r--r--bin/urlh.sh29
1 files changed, 29 insertions, 0 deletions
diff --git a/bin/urlh.sh b/bin/urlh.sh
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+++ b/bin/urlh.sh
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+# Get values for HTTP headers for the given URL
+
+# Check arguments
+if [ "$#" -ne 2 ] ; then
+ printf 'urlt: Need an URL and a header name\n'
+ exit 2
+fi
+url=$1 header=$2
+
+# Run cURL header request
+curl -fIsSL -- "$url" |
+
+# Unfold the headers
+unf |
+
+# Change the line endings to UNIX format
+sd2u |
+
+# Use awk to find any values for the header case-insensitively
+awk -v header="$header" '
+BEGIN {
+ FS=": *"
+ header = tolower(header)
+}
+tolower($1) == header {
+ sub(/^[^ ]*: */, "")
+ print
+}
+'