The auditors have nailed us for world writeable files....
Apparently in years gone by, quite a number of our kornshell scripts have had:
umask 000 put in the script.
We have been able to turn off world writeable for existing dirs & files, but as these scripts run, new files keep getting... (1 Reply)
I want to send a single report from my application to mulitple printers with one command.
I tried using a synomym and assigning it to different printers, but it stops when it finds the first hit.
Has anyone done this at the unix level through printcap? (2 Replies)
Hi,
I would like to get 5th field from this output using FS.
Filesystem 1024-blocks Used Available Capacity Mounted on
172.29.138.222:/vol/vol0 311936256 2565248 309371008 1% /tmp/test
My command is
df -kP | awk ' BEGIN { FS="" ; } { print $5 ; } '
For some... (5 Replies)
Hi ,
I have bunch of sql file which contain UHCDEV01 in them . I want to replace all the UHCDEV01 with UHCETL01 in all the files. I have written this code which shows correct output on sh -x but doesn't change the output file .
#cat change_dbname.shl
#!/bin/ksh... (1 Reply)
Hi all,
I have mistkanely gzipped twice an entire folder and sub folders, and also renamed the files during that process.
I am trying to undo this, and I need help to create the batch to work on it.
All folders are under my images directory, I have a output.txt file that holds all the... (1 Reply)
Hi All,
I have a total of ten file to open in the Perl script and i am using a for loop to open each file and capture some strings inside each file.
Unfortunately, i encounter the below syntax error.
I think there should be something wrong with this term reports_${counting}_${_}.txt but i do... (4 Replies)
Hi, guys, I'm not a high-end programmer, but I've been trying to write a script to remove all of the b.rtbn2.cn (and b.adserv.cn and any future variation) injected script tags on the server. (Still working on security fixes to prevent it in the future, just need to clean up now.)
My approach is... (1 Reply)
I have a basic tail/grep question. I have logs that are generated & kept in a directory called alert_audit. I am using "tail" to see the logs that are coming in, but I only need logs that contain the IP address 10.249.185. or 10.247.231.
Here is the command I have, but it pulls all IP... (3 Replies)
I am using below scripts to copy all the files from multiple folders. By executing individually command i am able to copy all the files but using scripts only getting first file. System is ignoring the second CD and mget command.
HOST=server.com
USER=loginid
PASSWD="abc"
echo "open $HOST... (6 Replies)
Hi All,
I have two files in the following format.
File 1 :
1044|1|20121031|2910039.4|MR|201210|G1044|E
1082|2|20121031|1664662.84|MR|201210|G1082|E
1696|3|20121031|190801.5|MR|201210|G1696|E
1824|4|20121031|196350|MR|201210|G1824|E
1900|5|20121031|221447.8|MR|201210|G1900|E
File 2 :... (7 Replies)
Discussion started by: nua7
7 Replies
LEARN ABOUT MOJAVE
subst
subst(n) Tcl Built-In Commands subst(n)
__________________________________________________________________________________________________________________________________________________NAME
subst - Perform backslash, command, and variable substitutions
SYNOPSIS
subst ?-nobackslashes? ?-nocommands? ?-novariables? string
_________________________________________________________________DESCRIPTION
This command performs variable substitutions, command substitutions, and backslash substitutions on its string argument and returns the
fully-substituted result. The substitutions are performed in exactly the same way as for Tcl commands. As a result, the string argument
is actually substituted twice, once by the Tcl parser in the usual fashion for Tcl commands, and again by the subst command.
If any of the -nobackslashes, -nocommands, or -novariables are specified, then the corresponding substitutions are not performed. For
example, if -nocommands is specified, command substitution is not performed: open and close brackets are treated as ordinary characters
with no special interpretation.
Note that the substitution of one kind can include substitution of other kinds. For example, even when the -novariables option is speci-
fied, command substitution is performed without restriction. This means that any variable substitution necessary to complete the command
substitution will still take place. Likewise, any command substitution necessary to complete a variable substitution will take place, even
when -nocommands is specified. See the EXAMPLES below.
If an error occurs during substitution, then subst will return that error. If a break exception occurs during command or variable substi-
tution, the result of the whole substitution will be the string (as substituted) up to the start of the substitution that raised the excep-
tion. If a continue exception occurs during the evaluation of a command or variable substitution, an empty string will be substituted for
that entire command or variable substitution (as long as it is well-formed Tcl.) If a return exception occurs, or any other return code is
returned during command or variable substitution, then the returned value is substituted for that substitution. See the EXAMPLES below.
In this way, all exceptional return codes are "caught" by subst. The subst command itself will either return an error, or will complete
successfully.
EXAMPLES
When it performs its substitutions, subst does not give any special treatment to double quotes or curly braces (except within command sub-
stitutions) so the script
set a 44
subst {xyz {$a}}
returns "xyz {44}", not "xyz {$a}" and the script
set a "p} q {r"
subst {xyz {$a}}
returns "xyz {p} q {r}", not "xyz {p} q {r}".
When command substitution is performed, it includes any variable substitution necessary to evaluate the script.
set a 44
subst -novariables {$a [format $a]}
returns "$a 44", not "$a $a". Similarly, when variable substitution is performed, it includes any command substitution necessary to
retrieve the value of the variable.
proc b {} {return c}
array set a {c c [b] tricky}
subst -nocommands {[b] $a([b])}
returns "[b] c", not "[b] tricky".
The continue and break exceptions allow command substitutions to prevent substitution of the rest of the command substitution and the rest
of string respectively, giving script authors more options when processing text using subst. For example, the script
subst {abc,[break],def}
returns "abc,", not "abc,,def" and the script
subst {abc,[continue;expr {1+2}],def}
returns "abc,,def", not "abc,3,def".
Other exceptional return codes substitute the returned value
subst {abc,[return foo;expr {1+2}],def}
returns "abc,foo,def", not "abc,3,def" and
subst {abc,[return -code 10 foo;expr {1+2}],def}
also returns "abc,foo,def", not "abc,3,def".
SEE ALSO
Tcl(n), eval(n), break(n), continue(n)
KEYWORDS
backslash substitution, command substitution, variable substitution
Tcl 7.4 subst(n)