batch file - Correct syntax of the variable "Set" for program execution and error log -


i creating unattended batch file programs have problems correct detection of variable run properly.

set installjava=java\jre-8u111-windows-i586.exe /s auto_update=0 web_analytics=0 reboot=0 sponsors=0 removeoutofdatejres=1 || echo "%time% java install did not complete." >> "%temp%\error.txt"

what syntax should used run installation file , error log program?

you use:

set "installjava=java\jre-8u111-windows-i586.exe /s auto_update=0 web_analytics=0 reboot=0 sponsors=0 removeoutofdatejres=1 || echo %time% java install did not complete.>> "%temp%\error.txt""

the environment variable installjava must referenced immediate expansion, i.e. %installjava% work command line execution.

see answer on why no string output 'echo %var%' after using 'set var = text' on command line? why using syntax set "variable=value" necessary here because of operators || , >> interpreted literal characters on assigning command line environment variable.

the echo without double quotes these double quotes written error log file. there no space left of redirection operator >> error message written error log file without trailing space character.


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