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Top Forums Shell Programming and Scripting Strip leading and numbers from a string. Post 302784943 by Don Cragun on Saturday 23rd of March 2013 05:16:44 PM
Old 03-23-2013
If you're using a 1993 or later version of the Korn shell:
Code:
#!/bin/ksh
VAR1="ISOMETHING103"
VAR2="COTHERTHING04"
printf "Initial VAR1=\"%s\", VAR2=\"%s\"\n" "$VAR1" "$VAR2"
VAR1=${VAR1/?/}
VAR2=${VAR2/?/}
VAR1=${VAR1/%[0-9]([0-9][0-9])/\1}
VAR2=${VAR2/%[0-9]([0-9][0-9])/\1}
printf "  Final VAR1=\"%s\", VAR2=\"%s\"\n" "$VAR1" "$VAR2"

will yield:
Code:
Initial VAR1="ISOMETHING103", VAR2="COTHERTHING04"
  Final VAR1="SOMETHING03", VAR2="OTHERTHING04"

If you're using a recent bash:
Code:
#!/bin/bash
VAR1="ISOMETHING103"
VAR2="COTHERTHING04"
printf "Initial VAR1=\"%s\", VAR2=\"%s\"\n" "$VAR1" "$VAR2"
VAR1=${VAR1/?/}
VAR2=${VAR2/?/}
VAR1=${VAR1/%[0-9][0-9][0-9]/${VAR1:$((${#VAR1} - 2))}}
VAR2=${VAR2/%[0-9][0-9][0-9]/${VAR2:$((${#VAR2} - 2))}}
printf "  Final VAR1=\"%s\", VAR2=\"%s\"\n" "$VAR1" "$VAR2"

produces the same output.
Both of these suggestions use parameter expansions that are extensions that are allowed, but not specified, by the standards.
This User Gave Thanks to Don Cragun For This Post:
 

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SHTOOL-TABLE.TMP(1)					      GNU Portable Shell Tool					       SHTOOL-TABLE.TMP(1)

NAME
shtool-table - GNU shtool pretty-print a field-separated list SYNOPSIS
shtool table [-F|--field-sep sep] [-w|--width width] [-c|--columns cols] [-s|--strip strip] strsepstr... DESCRIPTION
This pretty-prints a list of strings as a table. OPTIONS
The following command line options are available. -F, --field-sep sep Separate columns using sep. Default is ":". -w, --width width Width of each column. Default is 15 characters. -c, --columns cols Number of columns. Default is 3. -s, --strip strip Strip off any characters past strip. Default is 79. EXAMPLE
# shell script shtool table -F , -w 5 -c 4 "1,2,3,4,5,6,7,8,9,10,11,12" HISTORY
The GNU shtool table command was originally written by Ralf S. Engelschall <rse@engelschall.com> in 1999 for GNU shtool. SEE ALSO
shtool(1), tr(1), fmt(1), sh(1), awk(1), sed(1). 18-Jul-2008 shtool 2.0.8 SHTOOL-TABLE.TMP(1)
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