$(...) means execute the command ... and print the output
to the command line.
<(...) and =(...) create a temporary file of the output and
redirect the output of this to the command line.
To understand the difference try:
and
The first will fail as diff expects input from a file.
Hi Friends,
Can any of you explain me about the below line of code?
mn_code=`env|grep "..mn"|awk -F"=" '{print $2}'`
Im not able to understand, what exactly it is doing :confused:
Any help would be useful for me.
Lokesha (4 Replies)
Can someone tell me how to get the version of bash that I am running?
I'm running cygwin bash on Windows XP at home and cygwin bash on Vista at work.
Is this the version number for bash?
$ uname -a
CYGWIN_NT-6.0 US-SEA-L3BER9K 1.5.25(0.156/4/2) 2008-06-12 19:34 i686 Cygwin
This is the... (2 Replies)
Hi,
could someone pls enlighten me on the difference between the "root" package and "usr" package?
Like in this example:
pkginfo -l SUNWGtku | grep -i desc
DESC: GTK - The GIMP Toolkit (Usr)
and
pkginfo -l SUNWGtkr | grep -i desc
DESC: GTK - The GIMP Toolkit (Root)... (6 Replies)
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)
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)
How to use "mailx" command to do e-mail reading the input file containing email address, where column 1 has name and column 2 containing “To” e-mail address
and column 3 contains “cc” e-mail address to include with same email.
Sample input file, email.txt
Below is an sample code where... (2 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)
Hi 2 all,
i have had AIX 7.2
:/# /usr/IBMAHS/bin/apachectl -v
Server version: Apache/2.4.12 (Unix)
Server built: May 25 2015 04:58:27
:/#:/# /usr/IBMAHS/bin/apachectl -M
Loaded Modules:
core_module (static)
so_module (static)
http_module (static)
mpm_worker_module (static)
... (3 Replies)
Discussion started by: penchev
3 Replies
LEARN ABOUT OPENDARWIN
tcl_recordandevalobj
Tcl_RecordAndEvalObj(3) Tcl Library Procedures Tcl_RecordAndEvalObj(3)__________________________________________________________________________________________________________________________________________________NAME
Tcl_RecordAndEvalObj - save command on history list before evaluating
SYNOPSIS
#include <tcl.h>
int
Tcl_RecordAndEvalObj(interp, cmdPtr, flags)
ARGUMENTS
Tcl_Interp *interp (in) Tcl interpreter in which to evaluate command.
Tcl_Obj *cmdPtr (in) Points to a Tcl object containing a command (or sequence of commands) to execute.
int flags (in) An OR'ed combination of flag bits. TCL_NO_EVAL means record the command but don't evaluate it.
TCL_EVAL_GLOBAL means evaluate the command at global level instead of the current stack level.
_________________________________________________________________DESCRIPTION
Tcl_RecordAndEvalObj is invoked to record a command as an event on the history list and then execute it using Tcl_EvalObjEx (or Tcl_Global-
EvalObj if the TCL_EVAL_GLOBAL bit is set in flags). It returns a completion code such as TCL_OK just like Tcl_EvalObjEx, as well as a
result object containing additional information (a result value or error message) that can be retrieved using Tcl_GetObjResult. If you
don't want the command recorded on the history list then you should invoke Tcl_EvalObjEx instead of Tcl_RecordAndEvalObj. Normally
Tcl_RecordAndEvalObj is only called with top-level commands typed by the user, since the purpose of history is to allow the user to re-
issue recently-invoked commands. If the flags argument contains the TCL_NO_EVAL bit then the command is recorded without being evaluated.
SEE ALSO
Tcl_EvalObjEx, Tcl_GetObjResult
KEYWORDS
command, event, execute, history, interpreter, object, record
Tcl 8.0 Tcl_RecordAndEvalObj(3)