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jtlsrv-cpp/.static-build/share/man/man1/vipsheader.1

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+.TH VIPSHEADER 1 "12 July 1990"
+.SH NAME
+vipsheader \- prints information about an image file
+.SH SYNOPSIS
+vipsheader [OPTIONS ...] files ...
+.SH DESCRIPTION
+.B vipsheader(1)
+prints image header fields to stdout.
+
+.SH OPTIONS
+
+.TP
+.B -a, --all
+Show all fields. Fields are displayed to be convenient for humans to
+read, so binary data, for example, is summarized rather than simply printed.
+
+.TP
+.B -f FIELD, --field=FIELD
+Print the value of
+.B FIELD
+from the image header. Fields are printed in a way suitable for programs to
+understand, so, for example, binary data is base64-encoded and printed as a
+stream of characters.
+
+The special field name
+.B getext
+prints the VIPS extension block: the XML defining the image metadata. You can
+alter this, then reattach with
+.B vipsedit(1).
+
+You can use multiple "-f" arguments to print the values
+of many fields.
+
+.SH EXAMPLES
+ $ vipsheader -f width ~/pics/*.v
+ 1024
+ 1279
+ 22865
+ 1
+ 256
+
+.SH SEE ALSO
+vipsedit(1)
+.SH COPYRIGHT
+N. Dessipris
+.SH AUTHOR
+N. Dessipris \- 12/07/1990