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50 lines
1.4 KiB
Bash
50 lines
1.4 KiB
Bash
#!/usr/bin/env bash
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# vim:ts=4:sts=4:sw=4:et
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#
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# Author: Hari Sekhon
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# Date: 2021-12-30 12:38:43 +0000 (Thu, 30 Dec 2021)
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#
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# https://github.com/HariSekhon/DevOps-Bash-tools
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#
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# License: see accompanying Hari Sekhon LICENSE file
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#
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# If you're using my code you're welcome to connect with me on LinkedIn and optionally send me feedback to help steer this or other code I publish
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#
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# https://www.linkedin.com/in/HariSekhon
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#
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set -euo pipefail
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[ -n "${DEBUG:-}" ] && set -x
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srcdir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
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# shellcheck disable=SC1090,SC1091
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. "$srcdir/lib/utils.sh"
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# shellcheck disable=SC2034,SC2154
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usage_description="
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Prints a list of unique characters in a string
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Useful to check large strings like \$PATH for characters that may be causing a regex match failure
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Works like a standard unix filter program - string is read from a file argument or passed via stdin
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"
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# used by usage() in lib/utils.sh
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# shellcheck disable=SC2034
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usage_args="[<file>]"
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help_usage "$@"
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# need GNU switches
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if is_mac; then
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od(){
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command god "$@"
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}
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fi
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# -c printable characters or backslash escapes
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# -v don't suppress duplicates with a *, we will post process them with sort
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# -w1 only output 1 char per line so we can post process with sort, can be no space between the -w and 1 otherwise it'll try to read the 1 as a file argument
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od -cv -A none -w1 "$@" |
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sort -bu
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