Term
| first line of a shell script |
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Definition
indicates what the shell script will use to run, usually it is:
#!/bin/bash |
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Term
| you just created a text file script.sh, why won't it run |
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Definition
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Term
| add execute rights to sysinfo.sh |
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Definition
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Term
| /usr/local/bin isn't in your user path, add it |
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Definition
| export PATH=$PATH:/usr/local/bin |
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Term
| how can you make it so that /usr/local/bin is always in your path |
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Definition
| edit ~/.bash_profile to add /usr/local/bin |
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Term
| you want to debug a sysinfo.sh, run so you can see what is going on |
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Definition
| sh -x /usr/local/bin/sysinfo.sh |
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Term
| you added -x to the end of the first line of sysinfo.sh, what does that do |
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Definition
| 1st line, #!/bin/bash -x debugs, prints the command, then the output |
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Term
| edit sysinfo.sh to make it always run in debug mode |
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Definition
make the first line:
#!/bin/bash -x
-x for debug |
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Term
| you are using vi, add line numbers to the screen |
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Definition
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Term
| add a local variable SYS_NAME as rhel5 |
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Definition
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Term
| echo the variable SYS_NAME in a sentence |
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Definition
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Term
| you set the variable SYS_NAME in a script, the script ended. What do you get when you enter: echo $sys_NAME |
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Definition
| nothing, the local variable was set in the script, it disappeared since it was in a sub-shell that is now closed |
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Term
| you have two local variables, SYSNAME and OSSYS, make them global |
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Definition
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Term
| set the variable SYS_NAME as the hostname of the system |
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Definition
SYS_NAME=`hostname`
use backticks (forward quotes) |
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Term
| set OS_VER as the output from uname -r |
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Definition
os_ver=`uname -r`
-Confirm that this works, didn't work on Fedora 8 |
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Term
| how do you capture command output into a variable |
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Definition
use backticks (forward quotes) ex:
VAR1=`date` |
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Term
| how do you use script command line arguments |
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Definition
$1 to $9 represent arguments 1-9
${10} arguments 10+ |
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Term
| what is the total number of arguments |
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Definition
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Term
| echo all the arguments passed to a script |
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Definition
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Term
| echo the PID of the running script |
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Definition
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Term
| echo the command or script from the script |
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Definition
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Term
echo the command(script),
then echo arg1, then arg2 |
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Definition
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Term
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Definition
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Term
| echo argument 1, toss out arg1 and make arg2 the new arg1 at the same time, echo the new arg1 |
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Definition
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Term
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Definition
| tosses out argument1 and moves everthing down one |
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Term
| how do you make a script interactive |
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Definition
read VAR1
reads the input from the user, feeds it to a variable |
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Term
| what are some common escape sequences according to that stupid book |
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Definition
\c - carriage return
\a - bell
\t - tab
\n - new line |
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Term
| let the user enter a file name so you can use it for the FILE arg - echo FILE |
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Definition
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