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-rw-r--r-- | README.markdown | 3 | ||||
-rwxr-xr-x | bin/edda | 61 | ||||
-rw-r--r-- | man/edda.1 | 19 |
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diff --git a/README.markdown b/README.markdown index ab87294f..195c95c1 100644 --- a/README.markdown +++ b/README.markdown @@ -285,6 +285,9 @@ Three SSH-related scripts and their manuals are included: If you want to use the manuals, you may need to add `~/.local/share/man` to your `/etc/manpath` configuration, depending on your system. +`edda(1)` provides a means to run `ed(1)` over a set of files preserving any +options, mostly useful for scripts. There’s `--help` output and a manual page. + There's also a script `han(1)` to provide a `keywordprg` for Bash script development that will look for `help` topics. You could use it from the shell too. It also has a brief manual. diff --git a/bin/edda b/bin/edda new file mode 100755 index 00000000..154fb415 --- /dev/null +++ b/bin/edda @@ -0,0 +1,61 @@ +#!/usr/bin/env bash + +# +# edda(1) -- Run ed(1) over multiple files, duplicating stdin. Example: +# +# $ edda /etc/app.d/*.conf <<EOF +# ,s/foo/bar/g +# w +# EOF +# +# Author: Tom Ryder <tom@sanctum.geek.nz> +# Copyright: 2015 +# License: Public domain +# + +# Name self +self=edda + +# Define usage function +usage() { + printf 'USAGE: %s [OPTS] [--] FILE1 [FILE2...]\n' "$self" +} + +# Parse options out, give help if necessary +declare -a opts +for arg ; do + case $arg in + --help|-h|-\?) + usage + exit + ;; + --) + shift + break + ;; + -*) + shift + opts=("${opts[@]}" "$arg") + ;; + esac +done + +# Duplicate stdin into a file, which we'll remove on exit +stdin=$(mktemp) || exit +cleanup() { + rm -f "$stdin" +} +trap cleanup EXIT +cat > "$stdin" + +# Need at least one file +if ! (($#)) ; then + usage >&2 + exit 1 +fi + +# Run ed(1) over each file with the options and stdin given +for file ; do + ed "${opts[@]}" "$file" < "$stdin" +done + diff --git a/man/edda.1 b/man/edda.1 new file mode 100644 index 00000000..24c93fe9 --- /dev/null +++ b/man/edda.1 @@ -0,0 +1,19 @@ +.TH EDDA 1 "June 2015" "Manual page for edda" +.SH NAME +.B edda +\- run ed(1) over multiple files +.SH SYNOPSIS +.B ed [OPTS] [--] FILE1 [FILE2...] +.SH DESCRIPTION +Duplicate any data on stdin into a temporary file, and run ed(1) with any given +options over each of the files given as the remaining arguments. Example: +.P + $ edda /etc/app.d/*.conf <<EOF + ,s/foo/bar/g + w + EOF +.SH SEE ALSO +ed(1) +.SH AUTHOR +Tom Ryder <tom@sanctum.geek.nz> + |