Mercurial > hg > cc > cirrus_home
changeset 134:d3ef00af2064
add usage/help info
| author | Henry S. Thompson <ht@inf.ed.ac.uk> |
|---|---|
| date | Wed, 14 Jul 2021 16:49:54 +0000 |
| parents | 660dc255542a |
| children | a76cc0df2754 |
| files | bin/clm.sh |
| diffstat | 1 files changed, 14 insertions(+), 0 deletions(-) [+] |
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--- a/bin/clm.sh Wed Jul 14 16:49:35 2021 +0000 +++ b/bin/clm.sh Wed Jul 14 16:49:54 2021 +0000 @@ -1,4 +1,18 @@ #!/usr/bin/bash +if [ $# -ne 1 ] +then + echo "Usage: clm.sh outfile +Reads from stdin, which should be a complete set of HTTP header lines, +and _appends_ either the value of the Last-Modified header or a blank +line to the specified output file. + +In case of a set of headers containing more than one Last-Modified line, +that output still consists of a single line, with all the values, +separated by a semi-colon (;). + +So the output always consists of exactly one line." + exit 1 +fi egrep '^Last-Modified: ' | cut -f 2- -d ' ' | tr -d '\r' | { readarray -t a ; IFS=';' ; printf %s "${a[*]}" ; } >> "$1" echo >> "$1"