Well Jim, it's nice to see that there are historical backticks in the output of set for things such as gawkpath_default
I must admit that I spent a few years writing awful code using backticks in my scripts and fighting with escapes and escaped escapes depending how many layers there were or if I was running things remotely. Compare these:-
Both are pretty awful and should probably have been replaced by something neater overall anyway, but the escaped back-ticks make it particularly horrible to decipher. Sadly I had to escape the $ to get that passed as literal test to the remote server so that it would then execute there. I'm not proud of it but it worked when we hardly knew what we were doing and so this sort of thing got used all over the place for a while, so deciphering it (and worse) became quite an effort. It is all tidied up/replaced now anyway. They are worse to understand if you are not the author because the scripts were rarely commented.
The really confusing part is trying to work out where a back-tick ends with all those escapes too. At least with the start of a call being $( and the end being ) you have a fighting chance and tools like vim can help you too because they recognise and highlight the 'other end' and a call.
I hope that this help (or my awful old-style code makes you squirm )
Robin
These 4 Users Gave Thanks to rbatte1 For This Post:
Greetings & Happy New Years To All!
A client of mine FTP'ed their files up to the server and it all ended up being in UPPERCASE when it all should be in lowercase. Is there a builtin command or a script anyone knows of that will automagically convert all files to lowercase?
Please advise asap... (4 Replies)
I want to convert string into uppercase string. How can i do that ? Ex: Enter the user name:
read name
show=upper(name)
echo $show --- This output should be the uppercase output.
Thanks (3 Replies)
If in a script I am taking an input (R201) for example and assigning it to a variable, how would I change the R to uppercase if it was keyed in as r201? I can't seem to get it to work with toupper (4 Replies)
Hi,
I am trying to convert the $i in loop from lower to upper case but getting error like ' awk: 0602-502 The statement cannot be correctly parsed. The source line is 1.' ..
Requirement: I have many table in script XXX.sql which starting with 'ABC_','AbC_','aBc_' etc.. same thing for table... (2 Replies)
should be a simple question, I am trying to uppercase every first character in a word on the list.
abc
google
cnn
services
My first thought was sed 'y/^/^/', but it changed all the characters, not just the first character.
any thoughts? (7 Replies)
Inside a script I have 2 variables COMP=cy and PT=t. further down the same script I require at the same line to call those 2 variables the first time uppercase and after lowercase ${COMP}${PT}ACE,${COMP}${PT}ace. Can somebody help me
Thanks in advance
George Govotsis (7 Replies)
Hello,
I have a list of files in a directory whose names are all in uppercasse, including the file format for eg *.MP3 . I would like to convert these to the normal way we write it ie ABC.MP3 to be converted to Abc.mp3 . I know that this can be done manually by using a lot of "mv" or rename... (6 Replies)
Discussion started by: ajayram
6 Replies
LEARN ABOUT DEBIAN
plan9-getflags
GETFLAGS(8) System Manager's Manual GETFLAGS(8)NAME
getflags, usage - command-line parsing for shell scripts
SYNOPSIS
getflags $*
usage [ progname ]
DESCRIPTION
Getflags parses the options in its command-line arguments according to the environment variable $flagfmt. This variable should be a list
of comma-separated options. Each option can be a single letter, indicating that it does not take arguments, or a letter followed by the
space-separated names of its arguments. Getflags prints an rc(1) script on standard output which initializes the environment variable
$flagx for every option mentioned in $flagfmt. If the option is not present on the command-line, the script sets that option's flag vari-
able to an empty list. Otherwise, the script sets that option's flag variable with a list containing the option's arguments or, if the
option takes no arguments, with the string 1. The script also sets the variable $* to the list of arguments following the options. The
final line in the script sets the $status variable, to the empty string on success and to the string usage when there is an error parsing
the command line.
Usage prints a usage message to standard error. It creates the message using $flagfmt, as described above, $args, which should contain the
string to be printed explaining non-option arguments, and $0, the program name (see rc(1)). If run under sh(1), which does not set $0, the
program name must be given explicitly on the command line.
EXAMPLE
Parse the arguments for leak(1):
flagfmt='b,s,f binary,r res,x width'
args='name | pid list'
if(! ifs=() eval `{getflags $*} || ~ $#* 0){
usage
exit usage
}
SOURCE
/src/cmd/getflags.c
/src/cmd/usage.c
SEE ALSO arg(3)GETFLAGS(8)