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root@debian:/opt /ldoce5# myvar=googooli ./ldoce5-bin &Each program when that run, has a directory with its PID in /proc/, in my example:/proc/21959/and each process has a file namedenviron, i use cat environ , i saw the following result: myvar=googooliXDG_VTNR=7ORBIT_SOCKETDIR=/tmp/orbit-mohsenXDG_SESSION_ID=10SSH_AGENT_PID=6196TERMINATOR_UUID (yes a set of variable and you can see myvar)