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Full Discussion: tee command within variable
Top Forums UNIX for Dummies Questions & Answers tee command within variable Post 302445012 by Corona688 on Friday 13th of August 2010 11:46:01 AM
Old 08-13-2010
Variables are not evaluated that way after strings have already been parsed, as you've discovered, but, you can force the shell to re-evaluate it whenever you want with the eval builtin.

Code:
STR="echo A | cat"
eval "$STR"

 

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RECINS(1)							   User Commands							 RECINS(1)

NAME
recins - insert records in a recfile SYNOPSIS
recins [OPTION]... [t TYPE] [-n NUM | -e EXPR | -q STR | -m NUM] [(-f STR -v STR]|[-R RECDATA)]... [FILE] DESCRIPTION
Insert new records in a rec database. -f, --field=STR field name; should be followed by a -v. -v, --value=STR field value; should be preceded by an -f. -r, --record=STR record that will be inserted in the file. --force insert the record even if it is violating record restrictions. --no-external don't use external descriptors. --no-auto don't insert auto generated fields. --verbose give a detailed report if the integrity check fails. -s, --password=STR encrypt confidential fields with the given password. --help print a help message and exit. --version show version and exit. Record selection options: -i, --case-insensitive make strings case-insensitive in selection expressions. -t, --type=TYPE operate on records of the specified type only. -e, --expression=EXPR selection expression. -q, --quick=STR select records with fields containing a string. -n, --number=NUM,... select specific records by position, with ranges. -R, --random=NUM select a given number of random records. If no FILE is specified then the command acts like a filter, getting the data from standard input and writing the result to standard out- put. AUTHOR
Written by Jose E. Marchesi. REPORTING BUGS
Report bugs to: bug-recutils@gnu.org GNU recutils home page: <http://www.gnu.org/software/recutils/> General help using GNU software: <http://www.gnu.org/gethelp/> COPYRIGHT
Copyright (C) 2010, 2011, 2012 Jose E. Marchesi. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>. This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. SEE ALSO
The full documentation for recins is maintained as a Texinfo manual. If the info and recins programs are properly installed at your site, the command info recins should give you access to the complete manual. recins 1.4.93 January 2012 RECINS(1)
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