In my bash script I want to say "if argument 2 is anything except x, y or z, than echo this" (x y and z being words).
So my script looks like this:
Code:
if [[ $2 != {x,y,z} ]]
then
echo "unrecognized input: $2"
fi
This usually works but than I also want to say "if argument 2 IS x, y, or z, but argument 4 is not one of them, echo 'unrecognized input: $4'". So how to I format this so my script does both. I had this, but whenever argument 2 was x, y or z, and argument 4 wasn't, I still got the "unrecognized input: $2" error message.
Code:
if [[ $2 != {x,y,z} ]]
then
echo "unrecognized input: $2"
elif [[ $2 = {x,y,z} && $4 != {x,y,z} ]]
then
echo "unrecognized input: $4"
fi
how can i create a script with a correct control flow/loop(?) to
provide output from 3 files?
file1
one
two
three
file2
yellow
red
orange
file3
banana
apples
cantaloupes
output file:
one (1 Reply)
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I have an use case which needed your help . I have been using google for 2 days buy couldn`t succed , i believe i can get the help here.
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Discussion started by: radha254
5 Replies
LEARN ABOUT OSX
script
SCRIPT(1) BSD General Commands Manual SCRIPT(1)NAME
script -- make typescript of terminal session
SYNOPSIS
script [-akq] [-t time] [file [command ...]]
DESCRIPTION
The script utility makes a typescript of everything printed on your terminal. It is useful for students who need a hardcopy record of an
interactive session as proof of an assignment, as the typescript file can be printed out later with lpr(1).
If the argument file is given, script saves all dialogue in file. If no file name is given, the typescript is saved in the file typescript.
If the argument command is given, script will run the specified command with an optional argument vector instead of an interactive shell.
The following options are available:
-a Append the output to file or typescript, retaining the prior contents.
-k Log keys sent to program as well as output.
-q Run in quiet mode, omit the start and stop status messages.
-t time
Specify time interval between flushing script output file. A value of 0 causes script to flush for every character I/O event. The
default interval is 30 seconds.
The script ends when the forked shell (or command) exits (a control-D to exit the Bourne shell (sh(1)), and exit, logout or control-D (if
ignoreeof is not set) for the C-shell, csh(1)).
Certain interactive commands, such as vi(1), create garbage in the typescript file. The script utility works best with commands that do not
manipulate the screen. The results are meant to emulate a hardcopy terminal, not an addressable one.
ENVIRONMENT
The following environment variable is utilized by script:
SHELL If the variable SHELL exists, the shell forked by script will be that shell. If SHELL is not set, the Bourne shell is assumed. (Most
shells set this variable automatically).
SEE ALSO csh(1) (for the history mechanism).
HISTORY
The script command appeared in 3.0BSD.
BUGS
The script utility places everything in the log file, including linefeeds and backspaces. This is not what the naive user expects.
It is not possible to specify a command without also naming the script file because of argument parsing compatibility issues.
When running in -k mode, echo cancelling is far from ideal. The slave terminal mode is checked for ECHO mode to check when to avoid manual
echo logging. This does not work when in a raw mode where the program being run is doing manual echo.
BSD January 22, 2004 BSD