10-05-2018
Quote:
Originally Posted by
woodson2
I'm having an issue with bash read input when using a case statement.
The script halts and doesn't read the input on the first loop.
There is just one loop, and it looks like the first read (outside the loop) has completed accepting the preset value "8hrs" as <return> was hit.
Quote:
if I hit enter then the scripts starts to respond as expected.
. . .
Which is the correct behaviour of
read - read a line terminated by a return character.
Quote:
script sits here and doesn't read the given defaultans above.
There are no modifiers / options for this (second)
read - no default value, no timeout value, no char count - so, yes, it sits there and waits for your input, terminated by a <Return>.
Last edited by RudiC; 10-05-2018 at 06:42 PM..
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RBASH(1) General Commands Manual RBASH(1)
NAME
rbash - restricted bash, see bash(1)
RESTRICTED SHELL
If bash is started with the name rbash, or the -r option is supplied at invocation, the shell becomes restricted. A restricted shell is
used to set up an environment more controlled than the standard shell. It behaves identically to bash with the exception that the follow-
ing are disallowed or not performed:
o changing directories with cd
o setting or unsetting the values of SHELL, PATH, ENV, or BASH_ENV
o specifying command names containing /
o specifying a filename containing a / as an argument to the . builtin command
o specifying a filename containing a slash as an argument to the -p option to the hash builtin command
o importing function definitions from the shell environment at startup
o parsing the value of SHELLOPTS from the shell environment at startup
o redirecting output using the >, >|, <>, >&, &>, and >> redirection operators
o using the exec builtin command to replace the shell with another command
o adding or deleting builtin commands with the -f and -d options to the enable builtin command
o using the enable builtin command to enable disabled shell builtins
o specifying the -p option to the command builtin command
o turning off restricted mode with set +r or set +o restricted.
These restrictions are enforced after any startup files are read.
When a command that is found to be a shell script is executed, rbash turns off any restrictions in the shell spawned to execute the script.
SEE ALSO
bash(1)
GNU Bash-4.0 2004 Apr 20 RBASH(1)