Mixing
Save Char value from ASCII in a bash variable
2
I have this code to convert Dec ASCII value to char:
printf "\$(printf %o $ascii_value)"
Instead of print it, I would like to save it in a var. However, I can't get the Char value in that way.
root@private:/path# v=`printf "\$(printf %o 42)"`; echo $v
$(printf 0 42)
root@private:/path# printf "\$(printf %o 42)"
*
How can I save the Char value in a variable?
Thanks!!
bash shell char ascii
asked Nov 29 '18 at 14:42
Miguel.GMiguel.G
9810
add a comment |
2
I have this code to convert Dec ASCII value to char:
printf "\$(printf %o $ascii_value)"
Instead of print it, I would like to save it in a var. However, I can't get the Char value in that way.
root@private:/path# v=`printf "\$(printf %o 42)"`; echo $v
$(printf 0 42)
root@private:/path# printf "\$(printf %o 42)"
*
How can I save the Char value in a variable?
Thanks!!
bash shell char ascii
asked Nov 29 '18 at 14:42
Miguel.GMiguel.G
9810
add a comment |
2
2
2
1
I have this code to convert Dec ASCII value to char:
printf "\$(printf %o $ascii_value)"
Instead of print it, I would like to save it in a var. However, I can't get the Char value in that way.
root@private:/path# v=`printf "\$(printf %o 42)"`; echo $v
$(printf 0 42)
root@private:/path# printf "\$(printf %o 42)"
*
How can I save the Char value in a variable?
Thanks!!
bash shell char ascii
asked Nov 29 '18 at 14:42
Miguel.GMiguel.G
9810
I have this code to convert Dec ASCII value to char:
printf "\$(printf %o $ascii_value)"
Instead of print it, I would like to save it in a var. However, I can't get the Char value in that way.
root@private:/path# v=`printf "\$(printf %o 42)"`; echo $v
$(printf 0 42)
root@private:/path# printf "\$(printf %o 42)"
*
How can I save the Char value in a variable?
Thanks!!
bash shell char ascii
bash shell char ascii
asked Nov 29 '18 at 14:42
Miguel.GMiguel.G
9810
asked Nov 29 '18 at 14:42
Miguel.GMiguel.G
9810
asked Nov 29 '18 at 14:42
Miguel.GMiguel.G
9810
asked Nov 29 '18 at 14:42
Miguel.GMiguel.G
9810
asked Nov 29 '18 at 14:42
Miguel.GMiguel.G
9810
9810
add a comment |
add a comment |
2 Answers
2
active
oldest
votes
4
If the printf available in your shell supports the -v option (similar to sprintf() in C) you can directly use that to store the content of the formatted string directly to the variable and not printing to standard output.
printf -v char_value "\$(printf %o $ascii_value)"
You can verify that with a simple example
for ascii in {65..90} {97..122}; do
printf -v char_value "\$(printf %o $ascii)"
printf '%cn' "$char_value"
done
answered Nov 29 '18 at 14:53
InianInian
41.1k64274
1
Thanks for your solution, it works!:)
– Miguel.G
Dec 3 '18 at 14:48
add a comment |
1
Simply do:
ascii_value=65; char="$(printf "\$(printf "%o" "${ascii_value}")")"; echo $char
A
Lets make this a function for easy reuse:
#!/usr/bin/env bash
# Gets a character from its ASCII value
# Params:
# $1: the ASCII value of the character
# Return:
# >: the character with given ASCII value
# ?: false if the ASCII value is out of the 0..127 range
ASCIIToChar() {
[ "${1}" -lt 0 -o "${1}" -gt 127 ] && return 1
printf "\$(printf "%o" "${1}")"
}
# Lets demo the function above
declare -i ascii # variable ascii of type integer
declare character # variable character
# Print a header
echo -e "ASCIIttCharacter"
for ascii in {65..90} {97..122}; do
# Convert the ascii value and store the character
character="$(ASCIIToChar "${ascii}")"
# Print line with 2 columns ASCII and character
echo -e "${ascii}tt${character}"
done
Will output:
ASCII Character
65 A
66 B
67 C
68 D
69 E
70 F
[...]
119 w
120 x
121 y
122 z
Or to convert UTF-8 to character
# Gets a character from its UTF-8 value
# Params:
# $1: the UTF-8 value of the character
# Return:
# >: the character with given UTF-8 value
# ?: false if UTF-8 value is out of the 0..65535 range
UTF8toChar() {
[ "$((${1}))" -lt 0 -o "$((${1}))" -gt 65535 ] && return 1;
printf "\u$(printf "%04x" "${1}")"
}
# Lets demo the function above
declare -i utf8 # variable utf8 of type integer
declare character # variable character
# Print a header
echo -e "UTF-8ttCharacter"
for utf8 in {9472..9616} # U+2500..U+259F semi-graphic
do
# Convert the UTF-8 value and store the character
character="$(UTF8toChar "${utf8}")"
# Print line with 2 columns UTF-8 and character
printf "U+%04Xtt%sn" "${utf8}" "${character}"
done
Will output:
UTF-8 Character
U+2500 ─
U+2501 ━
U+2502 │
U+2503 ┃
U+2504 ┄
U+2505 ┅
[...]
U+2567 ╧
U+2568 ╨
U+2569 ╩
U+256A ╪
U+256B ╫
U+256C ╬
U+256D ╭
U+256E ╮
U+256F ╯
U+2570 ╰
[...]
answered Nov 30 '18 at 0:45
Léa GrisLéa Gris
413
Hi! Thanks for your solution:)
– Miguel.G
Dec 3 '18 at 14:49
add a comment |
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2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
4
If the printf available in your shell supports the -v option (similar to sprintf() in C) you can directly use that to store the content of the formatted string directly to the variable and not printing to standard output.
printf -v char_value "\$(printf %o $ascii_value)"
You can verify that with a simple example
for ascii in {65..90} {97..122}; do
printf -v char_value "\$(printf %o $ascii)"
printf '%cn' "$char_value"
done
answered Nov 29 '18 at 14:53
InianInian
41.1k64274
1
Thanks for your solution, it works!:)
– Miguel.G
Dec 3 '18 at 14:48
add a comment |
4
If the printf available in your shell supports the -v option (similar to sprintf() in C) you can directly use that to store the content of the formatted string directly to the variable and not printing to standard output.
printf -v char_value "\$(printf %o $ascii_value)"
You can verify that with a simple example
for ascii in {65..90} {97..122}; do
printf -v char_value "\$(printf %o $ascii)"
printf '%cn' "$char_value"
done
answered Nov 29 '18 at 14:53
InianInian
41.1k64274
1
Thanks for your solution, it works!:)
– Miguel.G
Dec 3 '18 at 14:48
add a comment |
4
4
4
If the printf available in your shell supports the -v option (similar to sprintf() in C) you can directly use that to store the content of the formatted string directly to the variable and not printing to standard output.
printf -v char_value "\$(printf %o $ascii_value)"
You can verify that with a simple example
for ascii in {65..90} {97..122}; do
printf -v char_value "\$(printf %o $ascii)"
printf '%cn' "$char_value"
done
answered Nov 29 '18 at 14:53
InianInian
41.1k64274
If the printf available in your shell supports the -v option (similar to sprintf() in C) you can directly use that to store the content of the formatted string directly to the variable and not printing to standard output.
printf -v char_value "\$(printf %o $ascii_value)"
You can verify that with a simple example
for ascii in {65..90} {97..122}; do
printf -v char_value "\$(printf %o $ascii)"
printf '%cn' "$char_value"
done
answered Nov 29 '18 at 14:53
InianInian
41.1k64274
edited Nov 29 '18 at 17:31
answered Nov 29 '18 at 14:53
InianInian
41.1k64274
answered Nov 29 '18 at 14:53
InianInian
41.1k64274
answered Nov 29 '18 at 14:53
InianInian
41.1k64274
41.1k64274
1
Thanks for your solution, it works!:)
– Miguel.G
Dec 3 '18 at 14:48
add a comment |
1
Thanks for your solution, it works!:)
– Miguel.G
Dec 3 '18 at 14:48
1
1
Thanks for your solution, it works!:)
– Miguel.G
Dec 3 '18 at 14:48
Thanks for your solution, it works!:)
– Miguel.G
Dec 3 '18 at 14:48
add a comment |
1
Simply do:
ascii_value=65; char="$(printf "\$(printf "%o" "${ascii_value}")")"; echo $char
A
Lets make this a function for easy reuse:
#!/usr/bin/env bash
# Gets a character from its ASCII value
# Params:
# $1: the ASCII value of the character
# Return:
# >: the character with given ASCII value
# ?: false if the ASCII value is out of the 0..127 range
ASCIIToChar() {
[ "${1}" -lt 0 -o "${1}" -gt 127 ] && return 1
printf "\$(printf "%o" "${1}")"
}
# Lets demo the function above
declare -i ascii # variable ascii of type integer
declare character # variable character
# Print a header
echo -e "ASCIIttCharacter"
for ascii in {65..90} {97..122}; do
# Convert the ascii value and store the character
character="$(ASCIIToChar "${ascii}")"
# Print line with 2 columns ASCII and character
echo -e "${ascii}tt${character}"
done
Will output:
ASCII Character
65 A
66 B
67 C
68 D
69 E
70 F
[...]
119 w
120 x
121 y
122 z
Or to convert UTF-8 to character
# Gets a character from its UTF-8 value
# Params:
# $1: the UTF-8 value of the character
# Return:
# >: the character with given UTF-8 value
# ?: false if UTF-8 value is out of the 0..65535 range
UTF8toChar() {
[ "$((${1}))" -lt 0 -o "$((${1}))" -gt 65535 ] && return 1;
printf "\u$(printf "%04x" "${1}")"
}
# Lets demo the function above
declare -i utf8 # variable utf8 of type integer
declare character # variable character
# Print a header
echo -e "UTF-8ttCharacter"
for utf8 in {9472..9616} # U+2500..U+259F semi-graphic
do
# Convert the UTF-8 value and store the character
character="$(UTF8toChar "${utf8}")"
# Print line with 2 columns UTF-8 and character
printf "U+%04Xtt%sn" "${utf8}" "${character}"
done
Will output:
UTF-8 Character
U+2500 ─
U+2501 ━
U+2502 │
U+2503 ┃
U+2504 ┄
U+2505 ┅
[...]
U+2567 ╧
U+2568 ╨
U+2569 ╩
U+256A ╪
U+256B ╫
U+256C ╬
U+256D ╭
U+256E ╮
U+256F ╯
U+2570 ╰
[...]
answered Nov 30 '18 at 0:45
Léa GrisLéa Gris
413
Hi! Thanks for your solution:)
– Miguel.G
Dec 3 '18 at 14:49
add a comment |
1
Simply do:
ascii_value=65; char="$(printf "\$(printf "%o" "${ascii_value}")")"; echo $char
A
Lets make this a function for easy reuse:
#!/usr/bin/env bash
# Gets a character from its ASCII value
# Params:
# $1: the ASCII value of the character
# Return:
# >: the character with given ASCII value
# ?: false if the ASCII value is out of the 0..127 range
ASCIIToChar() {
[ "${1}" -lt 0 -o "${1}" -gt 127 ] && return 1
printf "\$(printf "%o" "${1}")"
}
# Lets demo the function above
declare -i ascii # variable ascii of type integer
declare character # variable character
# Print a header
echo -e "ASCIIttCharacter"
for ascii in {65..90} {97..122}; do
# Convert the ascii value and store the character
character="$(ASCIIToChar "${ascii}")"
# Print line with 2 columns ASCII and character
echo -e "${ascii}tt${character}"
done
Will output:
ASCII Character
65 A
66 B
67 C
68 D
69 E
70 F
[...]
119 w
120 x
121 y
122 z
Or to convert UTF-8 to character
# Gets a character from its UTF-8 value
# Params:
# $1: the UTF-8 value of the character
# Return:
# >: the character with given UTF-8 value
# ?: false if UTF-8 value is out of the 0..65535 range
UTF8toChar() {
[ "$((${1}))" -lt 0 -o "$((${1}))" -gt 65535 ] && return 1;
printf "\u$(printf "%04x" "${1}")"
}
# Lets demo the function above
declare -i utf8 # variable utf8 of type integer
declare character # variable character
# Print a header
echo -e "UTF-8ttCharacter"
for utf8 in {9472..9616} # U+2500..U+259F semi-graphic
do
# Convert the UTF-8 value and store the character
character="$(UTF8toChar "${utf8}")"
# Print line with 2 columns UTF-8 and character
printf "U+%04Xtt%sn" "${utf8}" "${character}"
done
Will output:
UTF-8 Character
U+2500 ─
U+2501 ━
U+2502 │
U+2503 ┃
U+2504 ┄
U+2505 ┅
[...]
U+2567 ╧
U+2568 ╨
U+2569 ╩
U+256A ╪
U+256B ╫
U+256C ╬
U+256D ╭
U+256E ╮
U+256F ╯
U+2570 ╰
[...]
answered Nov 30 '18 at 0:45
Léa GrisLéa Gris
413
Hi! Thanks for your solution:)
– Miguel.G
Dec 3 '18 at 14:49
add a comment |
1
1
1
Simply do:
ascii_value=65; char="$(printf "\$(printf "%o" "${ascii_value}")")"; echo $char
A
Lets make this a function for easy reuse:
#!/usr/bin/env bash
# Gets a character from its ASCII value
# Params:
# $1: the ASCII value of the character
# Return:
# >: the character with given ASCII value
# ?: false if the ASCII value is out of the 0..127 range
ASCIIToChar() {
[ "${1}" -lt 0 -o "${1}" -gt 127 ] && return 1
printf "\$(printf "%o" "${1}")"
}
# Lets demo the function above
declare -i ascii # variable ascii of type integer
declare character # variable character
# Print a header
echo -e "ASCIIttCharacter"
for ascii in {65..90} {97..122}; do
# Convert the ascii value and store the character
character="$(ASCIIToChar "${ascii}")"
# Print line with 2 columns ASCII and character
echo -e "${ascii}tt${character}"
done
Will output:
ASCII Character
65 A
66 B
67 C
68 D
69 E
70 F
[...]
119 w
120 x
121 y
122 z
Or to convert UTF-8 to character
# Gets a character from its UTF-8 value
# Params:
# $1: the UTF-8 value of the character
# Return:
# >: the character with given UTF-8 value
# ?: false if UTF-8 value is out of the 0..65535 range
UTF8toChar() {
[ "$((${1}))" -lt 0 -o "$((${1}))" -gt 65535 ] && return 1;
printf "\u$(printf "%04x" "${1}")"
}
# Lets demo the function above
declare -i utf8 # variable utf8 of type integer
declare character # variable character
# Print a header
echo -e "UTF-8ttCharacter"
for utf8 in {9472..9616} # U+2500..U+259F semi-graphic
do
# Convert the UTF-8 value and store the character
character="$(UTF8toChar "${utf8}")"
# Print line with 2 columns UTF-8 and character
printf "U+%04Xtt%sn" "${utf8}" "${character}"
done
Will output:
UTF-8 Character
U+2500 ─
U+2501 ━
U+2502 │
U+2503 ┃
U+2504 ┄
U+2505 ┅
[...]
U+2567 ╧
U+2568 ╨
U+2569 ╩
U+256A ╪
U+256B ╫
U+256C ╬
U+256D ╭
U+256E ╮
U+256F ╯
U+2570 ╰
[...]
answered Nov 30 '18 at 0:45
Léa GrisLéa Gris
413
Simply do:
ascii_value=65; char="$(printf "\$(printf "%o" "${ascii_value}")")"; echo $char
A
Lets make this a function for easy reuse:
#!/usr/bin/env bash
# Gets a character from its ASCII value
# Params:
# $1: the ASCII value of the character
# Return:
# >: the character with given ASCII value
# ?: false if the ASCII value is out of the 0..127 range
ASCIIToChar() {
[ "${1}" -lt 0 -o "${1}" -gt 127 ] && return 1
printf "\$(printf "%o" "${1}")"
}
# Lets demo the function above
declare -i ascii # variable ascii of type integer
declare character # variable character
# Print a header
echo -e "ASCIIttCharacter"
for ascii in {65..90} {97..122}; do
# Convert the ascii value and store the character
character="$(ASCIIToChar "${ascii}")"
# Print line with 2 columns ASCII and character
echo -e "${ascii}tt${character}"
done
Will output:
ASCII Character
65 A
66 B
67 C
68 D
69 E
70 F
[...]
119 w
120 x
121 y
122 z
Or to convert UTF-8 to character
# Gets a character from its UTF-8 value
# Params:
# $1: the UTF-8 value of the character
# Return:
# >: the character with given UTF-8 value
# ?: false if UTF-8 value is out of the 0..65535 range
UTF8toChar() {
[ "$((${1}))" -lt 0 -o "$((${1}))" -gt 65535 ] && return 1;
printf "\u$(printf "%04x" "${1}")"
}
# Lets demo the function above
declare -i utf8 # variable utf8 of type integer
declare character # variable character
# Print a header
echo -e "UTF-8ttCharacter"
for utf8 in {9472..9616} # U+2500..U+259F semi-graphic
do
# Convert the UTF-8 value and store the character
character="$(UTF8toChar "${utf8}")"
# Print line with 2 columns UTF-8 and character
printf "U+%04Xtt%sn" "${utf8}" "${character}"
done
Will output:
UTF-8 Character
U+2500 ─
U+2501 ━
U+2502 │
U+2503 ┃
U+2504 ┄
U+2505 ┅
[...]
U+2567 ╧
U+2568 ╨
U+2569 ╩
U+256A ╪
U+256B ╫
U+256C ╬
U+256D ╭
U+256E ╮
U+256F ╯
U+2570 ╰
[...]
answered Nov 30 '18 at 0:45
Léa GrisLéa Gris
413
edited Jan 2 at 12:59
answered Nov 30 '18 at 0:45
Léa GrisLéa Gris
413
answered Nov 30 '18 at 0:45
Léa GrisLéa Gris
413
answered Nov 30 '18 at 0:45
Léa GrisLéa Gris
413
413
Hi! Thanks for your solution:)
– Miguel.G
Dec 3 '18 at 14:49
add a comment |
Hi! Thanks for your solution:)
– Miguel.G
Dec 3 '18 at 14:49
Hi! Thanks for your solution:)
– Miguel.G
Dec 3 '18 at 14:49
Hi! Thanks for your solution:)
– Miguel.G
Dec 3 '18 at 14:49
add a comment |
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