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Issue with writing a pipe
03-12-2020
printe() { # STR1 STR2 STR3
# Simply prints the strings as passed
# It requires 3 strings to use the center
case "$1" in
"--"|"-")
# Read pipe, expect one line
read LEFT CENTER RIGHT
set "$LEFT" "$CENTER" "$RIGHT"
echo " --------------"
echo "$LEFT $CENTER $RIGHT :: ${@}"
;;
esac
}
${ECHO:-\echo} This is piped | printe --------------- This :: This
This is piped :: This is piped
03-13-2020
03-13-2020
echo "this is piped" | print - # | This is piped | #
echo this is piped | - # | this is piped | #
echo "this is" "a piped" "test code"| printe - # | this is a piped test code | #
echo " ----------- TEST AREA -----------"
## Core sanity
# swarm.sanity.env
header "SWARM ${SWARM[VERSION]}" " " "$DATE_TODAY : $DATE_TIME"
title "my title"
printe left middle right
printf '%q ' 1This is piped | printe -
printf '%q ' "2This is" "a piped" "test code" | printe -
printf '%s\n' "3This is" "a piped" "test code" | printe -
#ask "Is this cool?"
echo $?
#echo "$(swarm.help VERSION)"
#set +x
echo " ----------- TEST AREA -----------"----------- TEST AREA ----------- # | SWARM 0.3 2020.03.13 : 15:16 | # # | my title | # # | left middle right | # # | 1This is piped | # # | 2This is a piped test code | # # | 3This is | # 0 ----------- TEST AREA -----------
printe() { # STR1 STR2 STR3
# Simply prints the strings as passed, end with newline
# It requires 3 strings to use the center
case "$1" in
"--"|"-")
# Read pipe, expect one line
shift
while read LEFT CENTER RIGHT
do
set "${LEFT}" "$CENTER" "$RIGHT"
printe "$LEFT" "$CENTER" "$RIGTH"
done
;;
esac
swarm.print.border -e
swarm.print.text -e "$1" "$2" "$3"
$PRINTF "$posEND\n"
}[sea@manjaro-desktop SWARM]$ time . ./runtime ........bash: fg: %s: no such job TODO : swarm.sanity.env .............bash: [[: ''1'': syntax error: operand expected (error token is "''1''") ----------- TEST AREA -----------
echo() { printf '%q ' "${@}";}
ECHO=echo_!bash: echo_!: command not found bash: echo_!: command not found bash: echo_!: command not found
[sea@manjaro-desktop SWARM]$ unset echo [sea@manjaro-desktop SWARM]$ which echo /usr/bin/echo [sea@manjaro-desktop SWARM]$ type echo echo is a shell builtin
[sea@manjaro-desktop SWARM]$ LC_ALL=C $(which echo) --help | grep -a3 NOTE \0NNN byte with octal value NNN (1 to 3 digits) \xHH byte with hexadecimal value HH (1 to 2 digits) NOTE: your shell may have its own version of echo, which usually supersedes the version described here. Please refer to your shell's documentation for details about the options it supports.
03-13-2020
It is not possible to use echo portably across all POSIX systems unless both -n (as the first argument) and escape sequences are omitted.
The printf utility can be used portably to emulate any of the traditional behaviors of the echo utility as follows (assuming that IFS has its standard value or is unset):
The historic System V echo and the requirements on XSI implementations in this volume of POSIX.1-2017 are equivalent to:
printf "%b\n" "$*"
The BSD echo is equivalent to:
if [ "X$1" = "X-n" ]
then
shift
printf "%s" "$*"
else
printf "%s\n" "$*"
fi
New applications are encouraged to use printf instead of echo.
03-13-2020
echo_ "This is" "another piped" "test run" | printe - echo_e "This is" "another piped" "test run" | printe - echo_n "This is" "another piped" "test run" | printe - echo_en "This is" "another piped" "test run" | printe - echo_q "This is" "another piped" "test run" | printe - printf '%q ' "This is" "another piped" "test run" | printe - type echo_q
# | This is another piped test run | #
# | This is another piped test run | #
# | This is another piped test run | #
# | This is another piped test run | #
# | This is another piped test run | #
# | This is another piped test run | #
echo_q ist eine Funktion.
echo_q ()
{
printf '%q ' $*
}# | This is another piped test run | #
echo_q ()
{
printf '%q ' "$1" "$2" "$3"
}
# | testoutput '' '' | #|
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