BUG: ./ci/code_checks.sh fails in local dev environment

[tuhinsharma121]

Pandas version checks

• I have checked that this issue has not already been reported.

• I have confirmed this bug exists on the latest version of pandas.

• I have confirmed this bug exists on the main branch of pandas.

Reproducible Example

$ ./ci/code_checks.sh code          # checks on imported code
$ ./ci/code_checks.sh doctests      # run doctests
$ ./ci/code_checks.sh docstrings    # validate docstring errors
$ ./ci/code_checks.sh single-docs   # check single-page docs build warning-free
$ ./ci/code_checks.sh notebooks     # check execution of documentation notebooks

Issue Description

results in the following error

./ci/code_checks.sh: line 19: conditional binary operator expected
./ci/code_checks.sh: line 19: syntax error near `1'
./ci/code_checks.sh: line 19: `if [[ -v 1 ]]; then'

Expected Behavior

It should run all the checks.

Installed Versions

INSTALLED VERSIONS

commit : 02708ed
python : 3.10.14.final.0
python-bits : 64
OS : Darwin
OS-release : 23.4.0
Version : Darwin Kernel Version 23.4.0: Fri Mar 15 00:12:25 PDT 2024; root:xnu-10063.101.17~1/RELEASE_ARM64_T6030
machine : arm64
processor : arm
byteorder : little
LC_ALL : None
LANG : None
LOCALE : None.UTF-8

pandas : 3.0.0.dev0+868.g02708ed7c1
numpy : 1.26.4
pytz : 2024.1
dateutil : 2.9.0
setuptools : 69.5.1
pip : 24.0
Cython : 3.0.10
pytest : 8.2.0
hypothesis : 6.100.2
sphinx : 7.3.7
blosc : None
feather : None
xlsxwriter : 3.1.9
lxml.etree : 5.2.1
html5lib : 1.1
pymysql : 1.4.6
psycopg2 : 2.9.9
jinja2 : 3.1.3
IPython : 8.22.2
pandas_datareader : None
adbc-driver-postgresql: None
adbc-driver-sqlite : None
bs4 : 4.12.3
bottleneck : 1.3.8
fastparquet : 2024.2.0
fsspec : 2024.3.1
gcsfs : 2024.3.1
matplotlib : 3.8.4
numba : 0.59.1
numexpr : 2.9.0
odfpy : None
openpyxl : 3.1.2
pyarrow : 15.0.2
pyreadstat : 1.2.7
python-calamine : None
pyxlsb : 1.0.10
s3fs : 2024.3.1
scipy : 1.13.0
sqlalchemy : 2.0.29
tables : 3.9.2
tabulate : 0.9.0
xarray : 2024.3.0
xlrd : 2.0.1
zstandard : 0.22.0
tzdata : 2024.1
qtpy : None
pyqt5 : None

[tuhinsharma121]

I see the problem is here

if [[ -v 1 ]]; then
    CHECK=$1
else
    # script will fail if it uses an unset variable (i.e. $1 is not provided)
    CHECK=""
fi

If I change the above to the following then it works fine

if [ -v "$1" ]; then
    CHECK="$1"
else
    # script will fail if it uses an unset variable (i.e. $1 is not provided)
    CHECK=""
fi

Let me know if I should create a PR for this.