bash_functions
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bash_functions [2013/05/18 17:56] k2patel [die # Exit with error code and optional message] |
bash_functions [2020/08/10 02:35] |
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| - | ====== Bash Functions ====== | ||
| - | ==== index # Print the position of $2 in $1 ==== | ||
| - | <code bash> | ||
| - | index() #@ Print the position of $2 in $1 | ||
| - | { #@ USAGE: index STRING SUBSTRING | ||
| - | local idx | ||
| - | case $1 in | ||
| - | *$2*) idx=${1%%$2*} | ||
| - | echo $(( ${#idx} + 1 )) ;; | ||
| - | *) echo 0 ;; | ||
| - | esac | ||
| - | } | ||
| - | </code> | ||
| - | [[http://www.linkedin.com/groups/Fridays-function-index-3716796.S.237745984?view=&srchtype=discussedNews&gid=3716796&item=237745984&type=member&trk=eml-anet_dig-b_pd-ttl-cn&ut=0kcr73WwfdW5I1 | From Article]] | ||
| - | ==== die # Exit with error code and optional message ==== | ||
| - | <code bash> | ||
| - | die() #@ Exit with error code and optional message | ||
| - | { #@ USAGE: die RETURN_CODE [MESSAGE] | ||
| - | result=$1 | ||
| - | shift | ||
| - | [ -n "$*" ] && printf "%s\n" "$*" >&2 | ||
| - | exit "$result" | ||
| - | } | ||
| - | </code> | ||
| - | [[ http://www.linkedin.com/groups/Fridays-function-die-3716796.S.236067929?qid=da8e8fcc-4fda-480a-91a1-3ef360d90e53&trk=group_most_popular_guest-0-b-ttl&goback=.gde_3716796_member_237745984.gmp_3716796 | From Article ]] | ||
| - | |||
| - | |||
| - | ==== Place SUBSTRING over STRING beginning at OFFSET ==== | ||
| - | <code bash> | ||
| - | overlay() #@ Place SUBSTRING over STRING beginning at OFFSET | ||
| - | { #@ USAGE: overlay VARNAME SUBSTRING OFFSET | ||
| - | local varname=$1 substr=$2 start=$3 string | ||
| - | eval "string=\${$varname}" | ||
| - | left=${string:0:start} | ||
| - | right=${string:start+${#substr}} | ||
| - | printf -v "$varname" %s%s%s "$left" "$substr" "$right" | ||
| - | } | ||
| - | </code> | ||
| - | [[ http://www.linkedin.com/groups/Fridays-function-overlay-3716796.S.241936021?view=&gid=3716796&type=member&item=241936021&trk=eml-anet_dig-b_nd-pst_ttle-cn | From Article ]] | ||
bash_functions.txt ยท Last modified: 2020/08/10 02:35 (external edit)
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