01-29-2020
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
anyone out there knows how to remove pattern <random string> use sed? (6 Replies)
Discussion started by: jamwong
6 Replies
2. Shell Programming and Scripting
Hello and thx for reading this
I'm using sed to remove only the leading spaces in a file
bash-280R# cat foofile
some text
some text
some text
some text
some text
bash-280R#
bash-280R# sed 's/^ *//' foofile > foofile.use
bash-280R# cat foofile.use
some text
some text
some text... (6 Replies)
Discussion started by: laser
6 Replies
3. Shell Programming and Scripting
I have to mangle some "plain ASCII" text file (i.e. 8 bits/characters where the text DOES contain characters like Umlauts and accented characters from the upper 7-bits range, i.e. with hex codes in ).
For this I am trying to use SED which I downloaded as part of cygwin package (yes, I am doing... (0 Replies)
Discussion started by: mmo
0 Replies
4. Shell Programming and Scripting
Hi gurus,
I have a file in unix with ascii values. I need to convert all the ascii values in the file to ascii characters. File contains nearly 20000 records with ascii values. (10 Replies)
Discussion started by: sandeeppvk
10 Replies
5. Shell Programming and Scripting
Hello
I have a file with records...The records have several lines and have start and end born...
This is a template:
000000001 LDR L ^^^^^nam^^2200325Iia^45e0
000000001 022 L $$a0081-3397
000000001 041 L $$aSPA
000000001 088 L $$aJ.E.N. 551
000000001 090 L $$aINFORMES JEN... (22 Replies)
Discussion started by: ldiaz2106
22 Replies
6. Shell Programming and Scripting
Hi,
i want to remove a certain pattern when i type pwd.
pwd will look like this:
..../....../....../Pat_logs/..../....../...../......
the dotted lines are just random directory names,
i want it to remove the "Pat_logs/...../....../....../" part
so for example:
... (5 Replies)
Discussion started by: a27wang
5 Replies
7. Shell Programming and Scripting
Hello
I have this special caracter after retreving rows from sql server:
"....spasses: • Entrem al valort 6050108002811 • El donem..."
I would like a sed command to remove it..or just know it's ascii code in order to replace it into my sql sentence.. Hope some one knows how to do that.... (7 Replies)
Discussion started by: ldiaz2106
7 Replies
8. Shell Programming and Scripting
I have been having an encoding problem that I need to solve.
I have an 4-column tab-separated file: I need to remove all of the lines that contain the string 'vis-à-vis'
achiever-n vis-à-vis+ns-j+vp oppose-v 1
achiever-n vis-à-vis+ns-the+vg assess-v 1
administrator-n ... (4 Replies)
Discussion started by: owwow14
4 Replies
9. Shell Programming and Scripting
Hi All,
I have an ascii file in which few columns are having hex values which i need to convert into ascii. Kindly suggest me what command can be used in unix shell scripting?
Thanks in Advance (2 Replies)
Discussion started by: HemaV
2 Replies
10. Shell Programming and Scripting
Hi
I have file in below format. How i can remove the first and lost comma from this below file
,001E:001F,,,02EE,0FED:0FEF,
I need output has below
001E:001F,,,02EE,0FED:0FEF (6 Replies)
Discussion started by: ranjancom2000
6 Replies
LEARN ABOUT REDHAT
unknown
unknown(n) Tcl Built-In Commands unknown(n)
__________________________________________________________________________________________________________________________________________________
NAME
unknown - Handle attempts to use non-existent commands
SYNOPSIS
unknown cmdName ?arg arg ...?
_________________________________________________________________
DESCRIPTION
This command is invoked by the Tcl interpreter whenever a script tries to invoke a command that doesn't exist. The implementation of
unknown isn't part of the Tcl core; instead, it is a library procedure defined by default when Tcl starts up. You can override the
default unknown to change its functionality.
If the Tcl interpreter encounters a command name for which there is not a defined command, then Tcl checks for the existence of a command
named unknown. If there is no such command, then the interpreter returns an error. If the unknown command exists, then it is invoked with
arguments consisting of the fully-substituted name and arguments for the original non-existent command. The unknown command typically does
things like searching through library directories for a command procedure with the name cmdName, or expanding abbreviated command names to
full-length, or automatically executing unknown commands as sub-processes. In some cases (such as expanding abbreviations) unknown will
change the original command slightly and then (re-)execute it. The result of the unknown command is used as the result for the original
non-existent command.
The default implementation of unknown behaves as follows. It first calls the auto_load library procedure to load the command. If this
succeeds, then it executes the original command with its original arguments. If the auto-load fails then unknown calls auto_execok to see
if there is an executable file by the name cmd. If so, it invokes the Tcl exec command with cmd and all the args as arguments. If cmd
can't be auto-executed, unknown checks to see if the command was invoked at top-level and outside of any script. If so, then unknown takes
two additional steps. First, it sees if cmd has one of the following three forms: !!, !event, or ^old^new?^?. If so, then unknown carries
out history substitution in the same way that csh would for these constructs. Finally, unknown checks to see if cmd is a unique abbrevia-
tion for an existing Tcl command. If so, it expands the command name and executes the command with the original arguments. If none of the
above efforts has been able to execute the command, unknown generates an error return. If the global variable auto_noload is defined, then
the auto-load step is skipped. If the global variable auto_noexec is defined then the auto-exec step is skipped. Under normal circum-
stances the return value from unknown is the return value from the command that was eventually executed.
SEE ALSO
info(n), proc(n)
KEYWORDS
error, non-existent command
Tcl unknown(n)