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Compare processed output of command to string in bash


Shell script command output in if condition comparison fails to compare to same value stringHow to determine if a bash variable is empty?create 'virtual file' from bash command output?What is the difference between double and single square brackets in bash?How can I sort du -h output by sizeWhat is “-bash: !”: event not found"How to run a command multiple times, using bash shell?Bash find command verbose outputShell script command output in if condition comparison fails to compare to same value stringBash script: compare paths issueCompare string on shell script













0















I am not able to get the correct output comparing the output of a specific to a simple string I have tried many different ways but not working so far



#!/bin/bash
redis_info=$(redis-cli info Persistence)
arr=()
while read line; do
arr+=("$line")
done <<< "$redis_info"
IFS=':' read -ra ADDR <<< "$arr[1]"
loading_status=$ADDR[1]
echo "$loading_status"

if [ "$loading_status" == 0 ];
then
echo "True"
else
echo "False"
fi


Output of this script when I run as 'bash myscript.sh' is False.



Output of redis-cli info Persistence is:



# Persistence
loading:0
rdb_changes_since_last_save:99402
rdb_bgsave_in_progress:1
rdb_last_save_time:1553588631
rdb_last_bgsave_status:ok
rdb_last_bgsave_time_sec:138
rdb_current_bgsave_time_sec:120
aof_enabled:0
aof_rewrite_in_progress:0
aof_rewrite_scheduled:0
aof_last_rewrite_time_sec:-1
aof_current_rewrite_time_sec:-1
aof_last_bgrewrite_status:ok
aof_last_write_status:ok


I have already seen many answers which should have worked but aren't working what can I be doing wrong here?
One reference to similar problem Condition comparison fails



Output of the script with bash -x myscript.sh:



++ redis-cli info Persistence
+ redis_info='# Persistence
loading:0
rdb_changes_since_last_save:8983
rdb_bgsave_in_progress:0
rdb_last_save_time:1554096567
rdb_last_bgsave_status:ok
rdb_last_bgsave_time_sec:127
rdb_current_bgsave_time_sec:-1
aof_enabled:0
aof_rewrite_in_progress:0
aof_rewrite_scheduled:0
aof_last_rewrite_time_sec:-1
aof_current_rewrite_time_sec:-1
aof_last_bgrewrite_status:ok
'of_last_write_status:ok
+ arr=()
+ read line
+ arr+=("$line")
+ read line
+ arr+=("$line")
+ read line
+ arr+=("$line")
+ read line
+ arr+=("$line")
+ read line
+ arr+=("$line")
+ read line
+ arr+=("$line")
+ read line
+ arr+=("$line")
+ read line
+ arr+=("$line")
+ read line
+ arr+=("$line")
+ read line
+ arr+=("$line")
+ read line
+ arr+=("$line")
+ read line
+ arr+=("$line")
+ read line
+ arr+=("$line")
+ read line
+ arr+=("$line")
+ read line
+ arr+=("$line")
+ read line
+ IFS=:
+ read -ra ADDR
+ loading_status=$'0r'
+ echo $'0r'
0
+ '[' $'0r' == 0 ']'
+ echo False
False









share|improve this question
























  • Try running it as bash -x myscript.sh and add the output to your question.

    – wurtel
    Mar 26 at 10:56















0















I am not able to get the correct output comparing the output of a specific to a simple string I have tried many different ways but not working so far



#!/bin/bash
redis_info=$(redis-cli info Persistence)
arr=()
while read line; do
arr+=("$line")
done <<< "$redis_info"
IFS=':' read -ra ADDR <<< "$arr[1]"
loading_status=$ADDR[1]
echo "$loading_status"

if [ "$loading_status" == 0 ];
then
echo "True"
else
echo "False"
fi


Output of this script when I run as 'bash myscript.sh' is False.



Output of redis-cli info Persistence is:



# Persistence
loading:0
rdb_changes_since_last_save:99402
rdb_bgsave_in_progress:1
rdb_last_save_time:1553588631
rdb_last_bgsave_status:ok
rdb_last_bgsave_time_sec:138
rdb_current_bgsave_time_sec:120
aof_enabled:0
aof_rewrite_in_progress:0
aof_rewrite_scheduled:0
aof_last_rewrite_time_sec:-1
aof_current_rewrite_time_sec:-1
aof_last_bgrewrite_status:ok
aof_last_write_status:ok


I have already seen many answers which should have worked but aren't working what can I be doing wrong here?
One reference to similar problem Condition comparison fails



Output of the script with bash -x myscript.sh:



++ redis-cli info Persistence
+ redis_info='# Persistence
loading:0
rdb_changes_since_last_save:8983
rdb_bgsave_in_progress:0
rdb_last_save_time:1554096567
rdb_last_bgsave_status:ok
rdb_last_bgsave_time_sec:127
rdb_current_bgsave_time_sec:-1
aof_enabled:0
aof_rewrite_in_progress:0
aof_rewrite_scheduled:0
aof_last_rewrite_time_sec:-1
aof_current_rewrite_time_sec:-1
aof_last_bgrewrite_status:ok
'of_last_write_status:ok
+ arr=()
+ read line
+ arr+=("$line")
+ read line
+ arr+=("$line")
+ read line
+ arr+=("$line")
+ read line
+ arr+=("$line")
+ read line
+ arr+=("$line")
+ read line
+ arr+=("$line")
+ read line
+ arr+=("$line")
+ read line
+ arr+=("$line")
+ read line
+ arr+=("$line")
+ read line
+ arr+=("$line")
+ read line
+ arr+=("$line")
+ read line
+ arr+=("$line")
+ read line
+ arr+=("$line")
+ read line
+ arr+=("$line")
+ read line
+ arr+=("$line")
+ read line
+ IFS=:
+ read -ra ADDR
+ loading_status=$'0r'
+ echo $'0r'
0
+ '[' $'0r' == 0 ']'
+ echo False
False









share|improve this question
























  • Try running it as bash -x myscript.sh and add the output to your question.

    – wurtel
    Mar 26 at 10:56













0












0








0


1






I am not able to get the correct output comparing the output of a specific to a simple string I have tried many different ways but not working so far



#!/bin/bash
redis_info=$(redis-cli info Persistence)
arr=()
while read line; do
arr+=("$line")
done <<< "$redis_info"
IFS=':' read -ra ADDR <<< "$arr[1]"
loading_status=$ADDR[1]
echo "$loading_status"

if [ "$loading_status" == 0 ];
then
echo "True"
else
echo "False"
fi


Output of this script when I run as 'bash myscript.sh' is False.



Output of redis-cli info Persistence is:



# Persistence
loading:0
rdb_changes_since_last_save:99402
rdb_bgsave_in_progress:1
rdb_last_save_time:1553588631
rdb_last_bgsave_status:ok
rdb_last_bgsave_time_sec:138
rdb_current_bgsave_time_sec:120
aof_enabled:0
aof_rewrite_in_progress:0
aof_rewrite_scheduled:0
aof_last_rewrite_time_sec:-1
aof_current_rewrite_time_sec:-1
aof_last_bgrewrite_status:ok
aof_last_write_status:ok


I have already seen many answers which should have worked but aren't working what can I be doing wrong here?
One reference to similar problem Condition comparison fails



Output of the script with bash -x myscript.sh:



++ redis-cli info Persistence
+ redis_info='# Persistence
loading:0
rdb_changes_since_last_save:8983
rdb_bgsave_in_progress:0
rdb_last_save_time:1554096567
rdb_last_bgsave_status:ok
rdb_last_bgsave_time_sec:127
rdb_current_bgsave_time_sec:-1
aof_enabled:0
aof_rewrite_in_progress:0
aof_rewrite_scheduled:0
aof_last_rewrite_time_sec:-1
aof_current_rewrite_time_sec:-1
aof_last_bgrewrite_status:ok
'of_last_write_status:ok
+ arr=()
+ read line
+ arr+=("$line")
+ read line
+ arr+=("$line")
+ read line
+ arr+=("$line")
+ read line
+ arr+=("$line")
+ read line
+ arr+=("$line")
+ read line
+ arr+=("$line")
+ read line
+ arr+=("$line")
+ read line
+ arr+=("$line")
+ read line
+ arr+=("$line")
+ read line
+ arr+=("$line")
+ read line
+ arr+=("$line")
+ read line
+ arr+=("$line")
+ read line
+ arr+=("$line")
+ read line
+ arr+=("$line")
+ read line
+ arr+=("$line")
+ read line
+ IFS=:
+ read -ra ADDR
+ loading_status=$'0r'
+ echo $'0r'
0
+ '[' $'0r' == 0 ']'
+ echo False
False









share|improve this question
















I am not able to get the correct output comparing the output of a specific to a simple string I have tried many different ways but not working so far



#!/bin/bash
redis_info=$(redis-cli info Persistence)
arr=()
while read line; do
arr+=("$line")
done <<< "$redis_info"
IFS=':' read -ra ADDR <<< "$arr[1]"
loading_status=$ADDR[1]
echo "$loading_status"

if [ "$loading_status" == 0 ];
then
echo "True"
else
echo "False"
fi


Output of this script when I run as 'bash myscript.sh' is False.



Output of redis-cli info Persistence is:



# Persistence
loading:0
rdb_changes_since_last_save:99402
rdb_bgsave_in_progress:1
rdb_last_save_time:1553588631
rdb_last_bgsave_status:ok
rdb_last_bgsave_time_sec:138
rdb_current_bgsave_time_sec:120
aof_enabled:0
aof_rewrite_in_progress:0
aof_rewrite_scheduled:0
aof_last_rewrite_time_sec:-1
aof_current_rewrite_time_sec:-1
aof_last_bgrewrite_status:ok
aof_last_write_status:ok


I have already seen many answers which should have worked but aren't working what can I be doing wrong here?
One reference to similar problem Condition comparison fails



Output of the script with bash -x myscript.sh:



++ redis-cli info Persistence
+ redis_info='# Persistence
loading:0
rdb_changes_since_last_save:8983
rdb_bgsave_in_progress:0
rdb_last_save_time:1554096567
rdb_last_bgsave_status:ok
rdb_last_bgsave_time_sec:127
rdb_current_bgsave_time_sec:-1
aof_enabled:0
aof_rewrite_in_progress:0
aof_rewrite_scheduled:0
aof_last_rewrite_time_sec:-1
aof_current_rewrite_time_sec:-1
aof_last_bgrewrite_status:ok
'of_last_write_status:ok
+ arr=()
+ read line
+ arr+=("$line")
+ read line
+ arr+=("$line")
+ read line
+ arr+=("$line")
+ read line
+ arr+=("$line")
+ read line
+ arr+=("$line")
+ read line
+ arr+=("$line")
+ read line
+ arr+=("$line")
+ read line
+ arr+=("$line")
+ read line
+ arr+=("$line")
+ read line
+ arr+=("$line")
+ read line
+ arr+=("$line")
+ read line
+ arr+=("$line")
+ read line
+ arr+=("$line")
+ read line
+ arr+=("$line")
+ read line
+ arr+=("$line")
+ read line
+ IFS=:
+ read -ra ADDR
+ loading_status=$'0r'
+ echo $'0r'
0
+ '[' $'0r' == 0 ']'
+ echo False
False






linux bash shell shell-scripting






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited yesterday







Shikhir Aggarwal

















asked Mar 26 at 8:33









Shikhir AggarwalShikhir Aggarwal

11




11












  • Try running it as bash -x myscript.sh and add the output to your question.

    – wurtel
    Mar 26 at 10:56

















  • Try running it as bash -x myscript.sh and add the output to your question.

    – wurtel
    Mar 26 at 10:56
















Try running it as bash -x myscript.sh and add the output to your question.

– wurtel
Mar 26 at 10:56





Try running it as bash -x myscript.sh and add the output to your question.

– wurtel
Mar 26 at 10:56










0






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