bash command stdin arguments options

bash-command-arguments-options.txt

bash arguments options stdin flags

required
optional


./cmd arg1 agr2 --debug --output=test.txt

Args:
- arg1
- arg2

...args are ordered == because they are read by position
...the 1st arg may be passed as stdin then piped to the command

Options
- o|output

...options can be abbr|word
...options can be required or optional

Flags

- v|verbose

...flags are options that just need to exist, their values ain't used


Example

sign message -k="private.key" -o="secret.txt"

sign message -k="private.key" -o="secret.txt" -v

sign message --key="private.key" --output="secret.txt" --verbose

echo "message" | sign --key="private.key" --output="secret.txt" --verbose

echo "message" | sign --key="private.key" 1> secret.txt

echo "message" | sign --key="private.key" 1> secret.txt 2> signing.err.log