You declare a variable without the dollar sign:
$var=value # no var=value # yes
Since underscore is a valid character for a variable name, ksh is trying to expand the variable named
ENVVAR3_bar
: you need to use braces to separate the variable name from the surrounding text:foo3$ENVVAR3_bar.csv # no foo3${ENVVAR3}_bar.csv # yes
KSH Resolving Environmental Variables for an Entire File
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07-07-2023 - |
Вопрос
I have a list of file names with environment variables in them. I'd like to read the file line by line and then set a variable to the read in line however have the envirnment variable translated to the appropriate environment variable. Here is my script so far:
#!/bin/ksh
. /test/currentEnv.sh
while read line
do
echo $line
done < $1
if my source file is:
foo1$ENVVAR1.csv
foo2$ENVVAR2.csv
foo3$ENVVAR3.csv
and my Environment variables in currentEnv.sh are
$ENVVAR1=hello; export ENVVAR1
$ENVVAR2=world; export ENVVAR2
$ENVVAR3=test; export ENVVAR3
I'd like the results of the script to be
foo1hello.csv
foo2world.csv
foo3test.csv
currently it just dumps out the original file:
foo1$ENVVAR1.csv
foo2$ENVVAR2.csv
foo3$ENVVAR3.csv
Edit
I was able to get the majority of my files resolved using: #!/bin/ksh
. /test/currentEnv.sh
while read line
do
eval echo $line
done < $1
however some of my variables are in the middle of string like:
foo3$ENVVAR3_bar.csv
this seems to look for an env variable $ENVVAR3_bar and doesn't find it I need this to output:
foo3test_bar.csv
Решение
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