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authorTom Ryder <tom@sanctum.geek.nz>2017-04-05 20:06:39 +1200
committerTom Ryder <tom@sanctum.geek.nz>2017-04-05 20:46:47 +1200
commitc8ab406749124d2e762ad5cf53963070113afd0f (patch)
tree54c9721a06957ebe7098a211eea803b0230c0f5d /bin/urlh.sh
parentHandle POSIX correctness in ~/.bash_profile (diff)
downloaddotfiles-c8ab406749124d2e762ad5cf53963070113afd0f.tar.gz
dotfiles-c8ab406749124d2e762ad5cf53963070113afd0f.zip
Apply runtime shebanging to POSIX shell
Diffstat (limited to 'bin/urlh.sh')
-rw-r--r--bin/urlh.sh29
1 files changed, 29 insertions, 0 deletions
diff --git a/bin/urlh.sh b/bin/urlh.sh
new file mode 100644
index 00000000..5b5cab74
--- /dev/null
+++ b/bin/urlh.sh
@@ -0,0 +1,29 @@
+# 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
+}
+'