You'd need if-then or a case block otherwise which is much longer and possibly confusing.
Ahem, ... this is not entirely correct. In ksh there is a special operation for variables to give them values if they are not defined already:
This will set "$variable" to "DEFAULT" if it is not set and leave it unchanged, if it is already. Unlike the ": command ..."-construct this is entirely readable and can - even if someone doesn't know this - be found in every ksh man page.
Hi All,
I am new to shell scripting and right now I am just limited to using the pre-written scripts. I am in to Infrastructure management where we use different scripts to get the information passed on to the monitoring tools. I am trying to use this script to get the information about the... (2 Replies)
Greetings, using ksh on Solaris, I am trying to identify the current version of a package installed on multiple servers using if statement in a precursor to upgrading.
I have searched the forums and have found many hits, reviewed 3 pages and have tried the different variations noted there. Also... (3 Replies)
I have a string of commands I am piping some data through and I want to allow command line switches to select which commands are used. I want to do something like this: OPTION="| command3"
command1 -a -b c.txt | command2 -d -e $OPTION >result.txt
I want to do it that way because OPTION may be... (1 Reply)
Im trying to check if a series of directory exists and if not create them, and am having issues. All the instances of test return with the error "test:
#!/bin/bash
location_Parent=~/Documents/sight_of_sound
location_IMG=~/Documents/Sight_of_sound/IMG
location_AUD=~/Documents/Sight_of_sound/AUD... (4 Replies)
Hi,
I have a variable, $sername, and I would like to display this variable only if it *does not* contain either of these two tags: *DTI*FA* or *DIFF*FA*.
I think the syntax for my 'or' operator is off. The variable $sername is continuously changing in an outer loop (not shown), but at the... (4 Replies)
Hi
I am trying to figure out what the following line does, I work in ksh88:
] && LIST="$big $LIST"
Not sure what "-a" means in that case.
Thanks a lot for any advice -A (1 Reply)
Hi,
I have line in input file as below:
3G_CENTRAL;INDONESIA_(M)_TELKOMSEL;SPECIAL_WORLD_GRP_7_FA_2_TELKOMSEL
My expected output for line in the file must be :
"1-Radon1-cMOC_deg"|"LDIndex"|"3G_CENTRAL|INDONESIA_(M)_TELKOMSEL"|LAST|"SPECIAL_WORLD_GRP_7_FA_2_TELKOMSEL"
Can someone... (7 Replies)
Hey guys/gals,
Am having trouble getting an 'if statement' to play nice..
I am playing with a script and need 'if' to check whether "y" or "Y" has been
entered and if not to exit.
In previous scripts I was playing with there would normally be a Y and a N response
possibility so each... (2 Replies)
Please show me how to make substitution over the contents of a file in a perl script.
In a perl script, the core part of substitution operation is
s/FINDPATTERN/REPLACEPATTERN/g;
However, I cannot figure out how to make the substitution occur over the contents of a file. The following... (3 Replies)
Hello.
System : opensuse leap 42.3
I have a bash script that build a text file.
I would like the last command doing :
print_cmd -o page-left=43 -o page-right=22 -o page-top=28 -o page-bottom=43 -o font=LatinModernMono12:regular:9 some_file.txt
where :
print_cmd ::= some printing... (1 Reply)
Discussion started by: jcdole
1 Replies
LEARN ABOUT SUNOS
shift
shift(1) User Commands shift(1)NAME
shift - shell built-in function to traverse either a shell's argument list or a list of field-separated words
SYNOPSIS
sh
shift [n]
csh
shift [variable]
ksh
* shift [n]
DESCRIPTION
sh
The positional parameters from $n+1 ... are renamed $1 ... . If n is not given, it is assumed to be 1.
csh
The components of argv, or variable, if supplied, are shifted to the left, discarding the first component. It is an error for the variable
not to be set or to have a null value.
ksh
The positional parameters from $n+1 $n+1 ... are renamed $1 ..., default n is 1. The parameter n can be any arithmetic expression that
evaluates to a non-negative number less than or equal to $#.
On this man page, ksh(1) commands that are preceded by one or two * (asterisks) are treated specially in the following ways:
1. Variable assignment lists preceding the command remain in effect when the command completes.
2. I/O redirections are processed after variable assignments.
3. Errors cause a script that contains them to abort.
4. Words, following a command preceded by ** that are in the format of a variable assignment, are expanded with the same rules as a vari-
able assignment. This means that tilde substitution is performed after the = sign and word splitting and file name generation are not
performed.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWcsu |
+-----------------------------+-----------------------------+
SEE ALSO csh(1), ksh(1), sh(1), attributes(5)SunOS 5.10 15 Apr 1994 shift(1)