Questions tagged [shebang]
In computing, a shebang is the character sequence consisting of the characters number sign and exclamation mark (that is, "#!") at the beginning of a script.
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What type of path in shebang is more preferable?
In scripts, first line should specify the path to interpreter.
But on different servers Linux, Unix, or BSD this path could be different.
What is more preferable?
#!/usr/bin/env bash
or
#!/bin/...
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What is the difference between #!/bin/sh and #!/bin/bash?
if I write,
#!/bin/bash
echo "foo"
or
#!/bin/sh
echo "foo"
both yields same. I have seen some scripts starting with #!/bin/sh or #!/bin/bash. Is there any difference between them?
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What is this line at the top of many files?
I have seen many files which have this line as the first line in them. What exactly is this?
#!/usr/bin/env python
What does it mean? Why is it necessary?
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Is there a command for running a script according to its shebang line?
If I want to execute a bash script which doesn't have its execution permission set, I can do:
bash script.sh
What should I use instead of bash if the script isn't executable and I don't know the ...
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What is "#!' in a script file? [duplicate]
$cat shebang.sed
#! /bin/sed -f
s/red/xxx/
s/BLUE/1234/
$./shebang.sed rgb
lower (#1): "xxx green blue"
UPPER (#2): "RED GREEN 1234"
$sed -f shebang.sed rgb
lower (#1): "xxx green blue"
UPPER (#2): ...
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