Switch syntax for testing file presence#1138
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eclipseo wants to merge 1 commit intoAcode-Foundation:mainfrom
Closed
Switch syntax for testing file presence#1138eclipseo wants to merge 1 commit intoAcode-Foundation:mainfrom
eclipseo wants to merge 1 commit intoAcode-Foundation:mainfrom
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[[ ]] is a bashism, adopted by some other shells (zsh, ksh) but not all. It does provide extra features (pattern matching and regex). The POSIX way would be to use `test` or it's synonym ` [ ] `. Both forms are equivalent, and the square brackets version [ ] requires spaces around the brackets as well as around each operator and operand. Here are some examples: ‐ `if [ -f "file.txt" ]; then echo "File exists"; fi` - `if test -f "file.txt"; then echo "File exists"; fi` The POSIX standard does not include the double brackets [[ ]], so for scripts that need to be portable across different POSIX-compliant shells, we should stick with [ ] or test.
Author
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Note that I don't have the means to test this, I don't have a build environment for Android and so on. |
Member
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This isn't the solution, instead we can use |
Member
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#1167 will fix this issue |
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[[ ]] is a bashism, adopted by some other shells (zsh, ksh) but not all. It does provide extra features (pattern matching and regex).
The POSIX way would be to use
testor it's synonym[ ]. Both forms are equivalent, and the square brackets version [ ] requires spaces around the brackets as well as around each operator and operand. Here are some examples:‐
if [ -f "file.txt" ]; then echo "File exists"; fiif test -f "file.txt"; then echo "File exists"; fiThe POSIX standard does not include the double brackets [[ ]], so for scripts that need to be portable across different POSIX-compliant shells, we should stick with [ ] or test.