日本語のみで絞り込む
2013/3/14 -I guess you're looking for: if [ "$PHONE_TYPE" != "NORTEL" ] && [ "$PHONE_TYPE" != "NEC" ] && [ "$PHONE_TYPE" != "CISCO" ].
2019/5/1 -You can check the equality and inequality of two strings in bash by using if statement. “==” is used to check equality and “!=” is used to check ...
2026/10/21 -Bash string comparison using equal, not equal, regex, and pattern matching operators. Includes examples for empty strings, case-insensitive ...
integer comparison. -eq. is equal to. if [ "$a" -eq "$b" ]. -ne. is not equal to. if [ "$a" -ne "$b" ]. -gt. is greater than. if [ "$a" -gt "$b" ].
2026/8/30 -Bash uses != for strings and -ne for integers, and an unquoted empty variable turns the whole test into a syntax error.
2023/3/13 -You can write an 'if' statement on a single line if you add ; : if [[ "str1" == "str2" ]]; then compare=true; else compare=false; fi.
String Comparison Operators ; = : Equal to ;!= : Not equal to ; < : Less than, in ASCII alphabetical order; > ; > : Greater than, in ASCII alphabetical order ...
2023/11/21 -We do this using double equal signs (==) for equality and the familiar “not equal” operator combination (!=). Here are examples of each: Code
2014/10/9 -No need to use awk:- #!/bin/bash ipcs | while read v1 v2 skip do [ "$v2" != "Semaphore" ] && echo "$v2" || break; done exit 0.
2013/9/30 -The right way to compare those two strings ( S1 and S2 ) using if is: if [ "$S1" = "$S2" ]. Do not be stingy in use spaces in this case.