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zram-swap: init: replace backticks with $()

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This replaces deprecated backticks by more versatile $(...) syntax.

Signed-off-by: Rui Salvaterra <rsalvaterra@gmail.com>
[add commit description]
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
This commit is contained in:
Rui Salvaterra
2020-06-30 17:23:12 +01:00
committed by Adrian Schmutzler
parent 69ca308673
commit 835c932ccb
1 changed files with 4 additions and 4 deletions
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8
package/system/zram-swap/files/zram.init
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@@ -73,7 +73,7 @@ zram_getdev()
local zdev=$( zram_dev ) local zdev=$( zram_dev )
if [ "$(mount | grep $zdev)" ]; then if [ "$(mount | grep $zdev)" ]; then
local idx=`cat /sys/class/zram-control/hot_add` local idx=$(cat /sys/class/zram-control/hot_add)
zdev="$( zram_dev $idx )" zdev="$( zram_dev $idx )"
fi fi
@@ -89,7 +89,7 @@ zram_comp_algo()
return 0 return 0
fi fi
if [ `grep -c "$zram_comp_algo" /sys/block/$( basename $dev )/comp_algorithm` -ne 0 ]; then if [ $(grep -c "$zram_comp_algo" /sys/block/$( basename $dev )/comp_algorithm) -ne 0 ]; then
logger -s -t zram_comp_algo -p daemon.debug "Set compression algorithm '$zram_comp_algo' for zram '$dev'" logger -s -t zram_comp_algo -p daemon.debug "Set compression algorithm '$zram_comp_algo' for zram '$dev'"
echo $zram_comp_algo > "/sys/block/$( basename $dev )/comp_algorithm" echo $zram_comp_algo > "/sys/block/$( basename $dev )/comp_algorithm"
else else
@@ -147,8 +147,8 @@ zram_compact()
# compact zram device (reduce memory allocation overhead) # compact zram device (reduce memory allocation overhead)
local zdev="/sys/block/$( basename "$1" )" local zdev="/sys/block/$( basename "$1" )"
local old_mem_used=`awk '{print $3}' <$zdev/mm_stat` local old_mem_used=$(awk '{print $3}' <$zdev/mm_stat)
local old_overhead=`awk '{print $3-$2}' <$zdev/mm_stat` local old_overhead=$(awk '{print $3-$2}' <$zdev/mm_stat)
echo 1 > $zdev/compact echo 1 > $zdev/compact