how to echo $, & symbols correctly?
up vote
0
down vote
favorite
Output &a on the screen while there is already a defined variable a. Here is what happened in my bash:
localhost:~ $ a=5
localhost:~ $ echo $$a
83079a
localhost:~ $ echo ^$a
^5
localhost:~ $
I just can't get $a.
And I found this post: https://stackoverflow.com/questions/4087695/escaping-ampersands-in-windows-batch-files
it says echo a ^& b will get a & b, but with my bash I got this:
localhost:~ $ echo a ^& b
[1] 83134
a ^
-bash: b: command not found
shell
edited yesterday
Rui F Ribeiro
38.6k1479128
asked Sep 4 '15 at 13:56
AGamePlayer
1,976102942
add a comment |
up vote
0
down vote
favorite
Output &a on the screen while there is already a defined variable a. Here is what happened in my bash:
localhost:~ $ a=5
localhost:~ $ echo $$a
83079a
localhost:~ $ echo ^$a
^5
localhost:~ $
I just can't get $a.
And I found this post: https://stackoverflow.com/questions/4087695/escaping-ampersands-in-windows-batch-files
it says echo a ^& b will get a & b, but with my bash I got this:
localhost:~ $ echo a ^& b
[1] 83134
a ^
-bash: b: command not found
shell
edited yesterday
Rui F Ribeiro
38.6k1479128
asked Sep 4 '15 at 13:56
AGamePlayer
1,976102942
3
did you try to excape using back slash instead of '^' ?
– lese
Sep 4 '15 at 14:03
works. thanks! sorry I never thought of that ...
– AGamePlayer
Sep 4 '15 at 14:04
You can also place things in single quotes'to get the literal form of anything
– Centimane
Sep 4 '15 at 14:06
You shouldn't be looking at windows batch file information for help with bash. They are different things.
– jw013
Sep 4 '15 at 14:55
add a comment |
up vote
0
down vote
favorite
up vote
0
down vote
favorite
Output &a on the screen while there is already a defined variable a. Here is what happened in my bash:
localhost:~ $ a=5
localhost:~ $ echo $$a
83079a
localhost:~ $ echo ^$a
^5
localhost:~ $
I just can't get $a.
And I found this post: https://stackoverflow.com/questions/4087695/escaping-ampersands-in-windows-batch-files
it says echo a ^& b will get a & b, but with my bash I got this:
localhost:~ $ echo a ^& b
[1] 83134
a ^
-bash: b: command not found
shell
edited yesterday
Rui F Ribeiro
38.6k1479128
asked Sep 4 '15 at 13:56
AGamePlayer
1,976102942
Output &a on the screen while there is already a defined variable a. Here is what happened in my bash:
localhost:~ $ a=5
localhost:~ $ echo $$a
83079a
localhost:~ $ echo ^$a
^5
localhost:~ $
I just can't get $a.
And I found this post: https://stackoverflow.com/questions/4087695/escaping-ampersands-in-windows-batch-files
it says echo a ^& b will get a & b, but with my bash I got this:
localhost:~ $ echo a ^& b
[1] 83134
a ^
-bash: b: command not found
shell
shell
edited yesterday
Rui F Ribeiro
38.6k1479128
asked Sep 4 '15 at 13:56
AGamePlayer
1,976102942
edited yesterday
Rui F Ribeiro
38.6k1479128
asked Sep 4 '15 at 13:56
AGamePlayer
1,976102942
edited yesterday
Rui F Ribeiro
38.6k1479128
edited yesterday
Rui F Ribeiro
38.6k1479128
edited yesterday
Rui F Ribeiro
38.6k1479128
38.6k1479128
asked Sep 4 '15 at 13:56
AGamePlayer
1,976102942
asked Sep 4 '15 at 13:56
AGamePlayer
1,976102942
asked Sep 4 '15 at 13:56
AGamePlayer
1,976102942
1,976102942
3
did you try to excape using back slash instead of '^' ?
– lese
Sep 4 '15 at 14:03
works. thanks! sorry I never thought of that ...
– AGamePlayer
Sep 4 '15 at 14:04
You can also place things in single quotes'to get the literal form of anything
– Centimane
Sep 4 '15 at 14:06
You shouldn't be looking at windows batch file information for help with bash. They are different things.
– jw013
Sep 4 '15 at 14:55
add a comment |
3
did you try to excape using back slash instead of '^' ?
– lese
Sep 4 '15 at 14:03
works. thanks! sorry I never thought of that ...
– AGamePlayer
Sep 4 '15 at 14:04
You can also place things in single quotes'to get the literal form of anything
– Centimane
Sep 4 '15 at 14:06
You shouldn't be looking at windows batch file information for help with bash. They are different things.
– jw013
Sep 4 '15 at 14:55
3
3
did you try to excape using back slash instead of '^' ?
– lese
Sep 4 '15 at 14:03
did you try to excape using back slash instead of '^' ?
– lese
Sep 4 '15 at 14:03
works. thanks! sorry I never thought of that ...
– AGamePlayer
Sep 4 '15 at 14:04
works. thanks! sorry I never thought of that ...
– AGamePlayer
Sep 4 '15 at 14:04
You can also place things in single quotes
' to get the literal form of anything– Centimane
Sep 4 '15 at 14:06
You can also place things in single quotes
' to get the literal form of anything– Centimane
Sep 4 '15 at 14:06
You shouldn't be looking at windows batch file information for help with bash. They are different things.
– jw013
Sep 4 '15 at 14:55
You shouldn't be looking at windows batch file information for help with bash. They are different things.
– jw013
Sep 4 '15 at 14:55
add a comment |
2 Answers
2
active
oldest
votes
up vote
4
down vote
accepted
Use double quotes to echo a variable
localhost:~ $ a=5
localhost:~ $ echo "$a"
5
localhost:~ $ echo '$a'
$a
localhost:~ $ echo "a & b"
a & b
Or backslash to escape and not use quotes
localhost:~ $ echo a & b
a & b
localhost:~ $ echo $a
$a
answered Sep 4 '15 at 14:17
tachomi
3,56731134
add a comment |
up vote
0
down vote
r@S:/tmp # a=10
r@S:/tmp # echo $a
10
r@S:/tmp # echo $a
$a
r@S:/tmp #
answered Sep 4 '15 at 14:20
SHW
7,98633570
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
up vote
4
down vote
accepted
Use double quotes to echo a variable
localhost:~ $ a=5
localhost:~ $ echo "$a"
5
localhost:~ $ echo '$a'
$a
localhost:~ $ echo "a & b"
a & b
Or backslash to escape and not use quotes
localhost:~ $ echo a & b
a & b
localhost:~ $ echo $a
$a
answered Sep 4 '15 at 14:17
tachomi
3,56731134
add a comment |
up vote
4
down vote
accepted
Use double quotes to echo a variable
localhost:~ $ a=5
localhost:~ $ echo "$a"
5
localhost:~ $ echo '$a'
$a
localhost:~ $ echo "a & b"
a & b
Or backslash to escape and not use quotes
localhost:~ $ echo a & b
a & b
localhost:~ $ echo $a
$a
answered Sep 4 '15 at 14:17
tachomi
3,56731134
add a comment |
up vote
4
down vote
accepted
up vote
4
down vote
accepted
Use double quotes to echo a variable
localhost:~ $ a=5
localhost:~ $ echo "$a"
5
localhost:~ $ echo '$a'
$a
localhost:~ $ echo "a & b"
a & b
Or backslash to escape and not use quotes
localhost:~ $ echo a & b
a & b
localhost:~ $ echo $a
$a
answered Sep 4 '15 at 14:17
tachomi
3,56731134
Use double quotes to echo a variable
localhost:~ $ a=5
localhost:~ $ echo "$a"
5
localhost:~ $ echo '$a'
$a
localhost:~ $ echo "a & b"
a & b
Or backslash to escape and not use quotes
localhost:~ $ echo a & b
a & b
localhost:~ $ echo $a
$a
answered Sep 4 '15 at 14:17
tachomi
3,56731134
edited Sep 4 '15 at 14:25
answered Sep 4 '15 at 14:17
tachomi
3,56731134
answered Sep 4 '15 at 14:17
tachomi
3,56731134
answered Sep 4 '15 at 14:17
tachomi
3,56731134
3,56731134
add a comment |
add a comment |
up vote
0
down vote
r@S:/tmp # a=10
r@S:/tmp # echo $a
10
r@S:/tmp # echo $a
$a
r@S:/tmp #
answered Sep 4 '15 at 14:20
SHW
7,98633570
add a comment |
up vote
0
down vote
r@S:/tmp # a=10
r@S:/tmp # echo $a
10
r@S:/tmp # echo $a
$a
r@S:/tmp #
answered Sep 4 '15 at 14:20
SHW
7,98633570
add a comment |
up vote
0
down vote
up vote
0
down vote
r@S:/tmp # a=10
r@S:/tmp # echo $a
10
r@S:/tmp # echo $a
$a
r@S:/tmp #
answered Sep 4 '15 at 14:20
SHW
7,98633570
r@S:/tmp # a=10
r@S:/tmp # echo $a
10
r@S:/tmp # echo $a
$a
r@S:/tmp #
answered Sep 4 '15 at 14:20
SHW
7,98633570
answered Sep 4 '15 at 14:20
SHW
7,98633570
answered Sep 4 '15 at 14:20
SHW
7,98633570
answered Sep 4 '15 at 14:20
SHW
7,98633570
7,98633570
add a comment |
add a comment |
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3
did you try to excape using back slash instead of '^' ?
– lese
Sep 4 '15 at 14:03
works. thanks! sorry I never thought of that ...
– AGamePlayer
Sep 4 '15 at 14:04
You can also place things in single quotes
'to get the literal form of anything– Centimane
Sep 4 '15 at 14:06
You shouldn't be looking at windows batch file information for help with bash. They are different things.
– jw013
Sep 4 '15 at 14:55